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Module 02. Physics

1. Matter.

Question Number. 1. An atom with 3 free electrons in its outer shell is said to be.

Option A. pentavalent.Option B. covalent.

Option C. trivalent.

Correct Answer is. trivalent.Explanation. Number of electrons in the outer shell is called the valenc ! 1 " monovalent# $ " divalent# 3 " trivalent etc.

Question Number. $. %hat is the mass number of an element&.

Option A. Number of electrons and protons.Option B. Number of neutrons and protons.

Option C. Number of electrons and neutrons.Correct Answer is. Number of neutrons and protons.

Explanation. N'(.

Question Number. 3. %hat do ou )et when ou add $*$ and O&.Option A. *$ O.

Option B. $*$ O.

Option C. $*$ O$ .Correct Answer is. $*$ O.

Explanation. %ater is molecules each made up of $ hdro)en atoms and 1 ox)en atom. *ere ther is + hdro)en atoms# and $ox)en atoms# so we can ma,e $ water molecules.

Question Number. +. -he splittin) of a chemical compound is called.



Option A. bombardment.Option B. snthesis.

Option C. analsis.

Correct Answer is. analsis.Explanation. N'(.

Question Number. . %hat is the atomic number of an element&.Option A. -he number of neutrons in the atom.

Option B. -he number of electrons in the atom.

Option C. -he number of protons in the atom.Correct Answer is. -he number of protons in the atom.

Explanation. N'(. http/00en.wi,ipedia.or)0wi,i0Atomicnumber

Question Number. 2. An atom with free electrons is said to be.

Option A. pentavalet.

Option B. covalent.Option C. trivalent.

Correct Answer is. trivalent.Explanation. -he valenc is the number of electrons in the outer shell if that number is + or less. 'f there are more than + electrons#

the valenc is minus the number of electrons. 'n this case ! " 3 " trivalent.

Question Number. 4. An atom consists of.Option A. protons# neutron and electrons.

Option B. protons and electrons.Option C. protons and neutrons.

Correct Answer is. protons# neutron and electrons.

Explanation. N'(.



Question Number. . -he maximum number of electrons in the inner shell of an atom is.

Option A. .

Option B. $.Option C. +.

Correct Answer is. $.Explanation. N'(.

Question Number. 5. -he mass of a proton e6uals the mass of a.

Option A. neutron.Option B. beta particle.

Option C. electron.

Correct Answer is. neutron.Explanation. 7ass of a proton " mass of a neutron 8well# ver nearl9.

Question Number. 1:. Catalsts.Option A. speed up reactions.

Option B. speed up and slow down reactions.Option C. slow down reactions.

Correct Answer is. speed up reactions.

Explanation. A catalst speeds up reactions# an inhibitor slows down reaction.

Question Number. 11. 'f the outer shell of an atom is full the the element is.

Option A. unstable 0 reactive.Option B. a )ood conductor.

Option C. practicall inert.

Correct Answer is. practicall inert.Explanation. N'(.



Question Number. 1$. 7olecules of the same compound are held to)ether b.

Option A. cohesive forces.Option B. adhesive forces.

Option C. )ravitational forces.Correct Answer is. cohesive forces.

Explanation. Cohesion is the propert that causes li,e substances to clin) to)ether 8e) water molecules# formin) raindrops9.Adhesion is the propert that causes unli,e substances to stic, to)ether 8e) the raindrops stic, on a washin) line9.

Question Number. 13. Ox)en has a valenc of.

Option A. $.

Option B. 2.Option C. .Correct Answer is. $.

Explanation. Ox)en has 2 electrons in its outer shell. -he valenc is the number of electrons in the outer shell if that number is + or

less. 'f there are more than + electrons# the valenc is minus the number of electrons. 'n this case ! 2 " $.

Question Number. 1+. -he further from the nucleus the shells are in an atom.

Option A. the shells retain the same spacin) from each other.

Option B. the closer the shells )et to each other.

Option C. the further the shells )et from each other.Correct Answer is. the further the shells )et from each other.Explanation. -he )ap between the ;ener) levels; reduces# but the phsical )ap increases sli)htl.

http/00www.1stardrive.com0solar0chem.htm

Question Number. 1. %hat determines an element;s identit&.Option A. -he number of neutrons.



Option B. -he number of electrons.Option C. -he number of protons.

Correct Answer is. -he number of protons.

Explanation. N'(. http/00en.wi,ipedia.or)0wi,i0Atomicnumber

Question Number. 12. An isotope of an element will have more0less than usual.

Option A. electrons.Option B. neutrons.

Option C. protons.

Correct Answer is. neutrons.Explanation. N'(. http/00en.wi,ipedia.or)0wi,i0'sotope

Question Number. 14. -he smallest part of an element is.Option A. a compound.

Option B. an atom.

Option C. a molecule.Correct Answer is. an atom.

Explanation. N'(.

Question Number. 1. -he nucleus of an atom contains.

Option A. protons and electrons.Option B. protons and neutrons.Option C. electrons and neutrons.

Correct Answer is. protons and neutrons.Explanation. N'(.

Question Number. 15. %hat is atomic mass&.



Option A. Number of neutrons.Option B. Number of protons plus the number of neutrons.

Option C. Number of protons.

Correct Answer is. Number of protons plus the number of neutrons.Explanation. N'(.

Question Number. $:. A solid melted into a li6uid will ta,e up.Option A. less space.

Option B. the same amount of space.

Option C. more space.Correct Answer is. less space.

Explanation. %hen a solid melts# its volume decreases ! and then be)ins to increase a)ain as the temperature of the li6uid rises.

Question Number. $1. %hat form of heat is used to turn a solid into a li6uid&.

Option A. specific heat.Option B. coefficient of heat.

Option C. heat of fusion.Correct Answer is. heat of fusion.

Explanation. <usion; is another term for meltin) 8as in fusion weldin)9.

Question Number. $$. Chan)e from solid to )as state without )oin) throu)h li6uid state is called.Option A. transformation.

Option B. sublimation.Option C. state leap.

Correct Answer is. sublimation.

Explanation. =ublimation is when a solid vapourises without first meltin).



Question Number. $3. %hat is the smallest particle of matter that can exist in nature&.

Option A. A molecule.

Option B. An isotope.Option C. An atom.

Correct Answer is. An atom.Explanation. An atom is the smallest particle of matter that can exist in nature.

Question Number. $+. A positive ion.

Option A. has extra electrons.Option B. has missin) electrons.

Option C. is a radioactive isotope.

Correct Answer is. has missin) electrons.Explanation. A positive ion is an atom with missin) electrons.

Question Number. $. -he isotope of a carbon atom C1+ to C1$ will have.Option A. same numbers of neutrons.

Option B. same numbers of protons.Option C. same number of electrons.

Correct Answer is. same numbers of protons.

Explanation. An isotope is an atom with the same atomic number but different mass number. Atomic number is the number of

protons. 7ass number is the number of protons plus neutrons. Note/ the number of electrons can differ from one atom to another8ma,in) ions9.

Question Number. $2. 'f an atom has $ protons# how man electrons will it have&.

Option A. 1.

Option B. .Option C. $.



Correct Answer is. $.Explanation. =ince it is an ;atom; 8and not an ion9 it has the same number of electrons as protons.

Question Number. $4. A molecule with li,e atoms is said to be a.

Option A. neutroid.Option B. compound.

Option C. element.Correct Answer is. element.

Explanation. 'f onl one tpe of atom is involved# it is an element.

Question Number. $. -wo elements in the same substance is said to be a.

Option A. mixture.Option B. element.Option C. compound.

Correct Answer is. compound.

Explanation. A compound is a substance formed b chemical reaction between $ or more elements. A mixture could be $ or morecompounds. A tenuous 6uestion.

Question Number. $5. -he number of protons in an atom is e6ual to the number of.

Option A. electrons.

Option B. neutrons.Option C. mass number.Correct Answer is. electrons.

Explanation. No. of protons " No. of electrons# or it is not an atom.

Question Number. 3:. -he char)e of an electron is.Option A. neutral.



Option B. ne)ative.Option C. positive.

Correct Answer is. ne)ative.

Explanation. Electrons are ne)ative.

Question Number. 31. A valance electron is an electron.

Option A. in the innermost shell.Option B. in the outermost shell.

Option C. which is not within an atom.

Correct Answer is. in the outermost shell.Explanation. -he outer shell is the valence shell.

Question Number. 3$. 7olecules of unli,e atoms are combined b their.Option A. adhesive force.

Option B. ma)netic force.

Option C. cohesive force.Correct Answer is. adhesive force.

Explanation. Cohesion is the propert that causes li,e substances to clin) to)ether 8e) water molecules# formin) raindrops ! from;cohesion; meanin) to stic, to)ether9. Adhesion is the propert that causes unli,e substances to stic, to)ether 8e) the raindrops stic,#

or ;adhere to; a washin) line9.

Question Number. 33. %hat is the difference between hdro)en# deuterium and tritium&.Option A. -he number of electrons.

Option B. -he number of protons.Option C. -he number of neutrons.

Correct Answer is. -he number of neutrons.

Explanation. -here are three isotopes of the element hdro)en/ hdro)en# deuterium# and tritium. -he each have one sin)le proton8>"19# but differ in the number of their neutrons. *dro)en has no neutron# deuterium has one# and tritium has two neutrons.



Question Number. 3+. -he smallest material in the universe is.

Option A. an ion.Option B. helium.

Option C. hdro)en.Correct Answer is. hdro)en.

Explanation. *dro)en is the smallest ,nown element# havin) ?ust 1 electron and 1 proton and no neutrons.

Question Number. 3. %hat is the atomic number of the element shown here&.

Option A. 4.Option B. 3.

Option C. +.Correct Answer is. 3.

Explanation. -he atomic number is the number of protons and is alwas the smallest number 8and es# the element shown is not possible9.

Question Number. 32. %hat is the mass number of the element shown here&.

Option A. +.Option B. .

Option C. 5.Correct Answer is. .

Explanation. -he mass number is the number of protons @ the number of neutrons and is alwas the bi))est of the $ numbers.



Question Number. 34. -here are solids# li6uids and )ases present in the universe and ever unit of theirs occup some space.-his is called.

Option A. matter.Option B. compound.

Option C. mass.Correct Answer is. matter.

Explanation. All material in space is ,nown as matter. 8All matter ;has; mass# but that is not what the 6uestion as,s ! what is it ,nown

as# not# what does it have9.

Question Number. 3. An atom deficient of a valenc electron is deficient.Option A. of an electron in the outer shell.Option B. of a neutron in the outer shell.

Option C. of an electron in the inner shell.

Correct Answer is. of an electron in the outer shell.Explanation. -he valenc electrons are in the outer shell.

Question Number. 35. -he maximum number of electrons in the second shell is.

Option A. +.

Option B. .Option C. $.Correct Answer is. .

Explanation. -r the formula ;$n!s6uared;# where ;n; is the shell number. 'n this case $ 8$ $9 " .

Question Number. +:. %hat does an ox)en atom consist of&.Option A. rotons# neutrons and electrons.



Option B. rotons and electrons.Option C. rotons and neutrons.

Correct Answer is. rotons# neutrons and electrons.

Explanation. All atoms have protons# neutrons and electrons 8except hdro)en# which has no neutrons9.

Question Number. +1. =urface molecular attraction between two different molecules is.

Option A. adhesive.Option B. )ravitational.

Option C. cohesive.

Correct Answer is. adhesive.Explanation. Cohesion is the propert that causes li,e substances to clin) to)ether 8e.). water molecules# formin) raindrops ! from

;cohesion; meanin) to stic, to)ether9. Adhesion is the propert that causes unli,e substances to stic, to)ether 8e.). the raindrops stic,#

or ;adhere to; a washin) line9.

Question Number. +$. -he atomic mass number is the number of.

Option A. protons plus electrons.Option B. neutrons plus electrons.

Option C. protons plus neutrons.Correct Answer is. protons plus neutrons.

Explanation. 7ass Number is the number of protons @ neutrons.

Question Number. +3. A catalst in a chemical reaction does what&.Option A. Can either speed it up or slow it down.

Option B. =peeds it up.Option C. =lows it down.

Correct Answer is. =peeds it up.

Explanation. Official definition of ;catalst;/ A substance that increases the rate of a chemical reaction b reducin) the activationener)# but which is left unchan)ed b the reaction.



Question Number. ++. %hat is the number of electrons in the inner!most shell of an atom&.

Option A. +.Option B. .

Option C. $.Correct Answer is. $.

Explanation. -he inner shell of an atom has $ electrons.

Question Number. +. %hat form of heat is used to turn a solid into a )as&.Option A. =ensible heat.

Option B. =pecific heat.

Option C. (atent heat.Correct Answer is. (atent heat.Explanation. -o chan)e an state# the heat re6uired is called ;latent heat;.

Question Number. +2. -he heat re6uired to chan)e a li6uid to a )as at constant temperature is the heat of.

Option A. fusion.Option B. condensation.

Option C. vaporisation.

Correct Answer is. vaporisation.

Explanation. -he heat re6uired to turn a li6uid into a )as 8vaporise9 is called the ;latent heat of vaporisation;.

Question Number. +4. An atom with a full outer shell is.Option A. practicall inert.

Option B. a )ood insulator.

Option C. a )ood conductor.Correct Answer is. practicall inert.



Explanation. An atom with a full outer shell is practicall inert.

Question Number. +. An element with a full valence shell is.Option A. ver reactive.

Option B. )ood conductor.Option C. inert.

Correct Answer is. inert.Explanation. An element with a full valence shell is inert.

Question Number. +5. A substance of two or more different atoms is.

Option A. a neutrino.

Option B. an isotope.Option C. a chemical compound.Correct Answer is. a chemical compound.

Explanation. A compound is two or more different atoms.

Question Number. :. An atom with electrons in its outer shell is.Option A. trivalent.

Option B. pentavelent.

Option C. covalent.

Correct Answer is. trivalent.Explanation. alenc is the number of electrons in the outer shell 8up to +9 or minus the number of electrons in the outer shell8over +9.

Question Number. 1. rotons have.

Option A. no char)e.Option B. positive char)e.



Option C. ne)ative char)e.Correct Answer is. positive char)e.

Explanation. rotons are positivel char)ed.

Question Number. $. roducin) a compound from commonl available materials is.Option A. snthesis.

Option B. analsis.Option C. bombardment.

Correct Answer is. snthesis.

Explanation. 7a,in) a compound is called snthesis# brea,in) it apart is called analsis.

Question Number. 3. A different number of nucleons in the nucleus of atoms would represent.Option A. semiconductor.Option B. isotopes.

Option C. isotones.

Correct Answer is. isotopes.Explanation. An 'sotope is an element with a ;wron); number of neutrons.

Question Number. +. 7olecules of matter are in constant motion. -he amount of vibration or motion is dependent on.

Option A. temperature.

Option B. volume.Option C. pressure.Correct Answer is. temperature.

Explanation. -emperature produces molecular motion.

Question Number. . %hen a chemical chan)e ta,es place# the smallest particle indivisible in an element is called.Option A. an atom.



Option B. an electron.Option C. a neutron.

Correct Answer is. an atom.

Explanation. An atom is the smallest particle in an element. articles smaller than that 8neutrons# protons# electrons9 do not define anelement.

Question Number. 2. A nucleus of an atom consists of.Option A. positivel char)ed particles.

Option B. a nucleus and normall has no overall char)e at all and so is neutral.

Option C. ne)ativel char)ed particles.Correct Answer is. positivel char)ed particles.

Explanation. rotons are positive# neutrons are neutral.

Question Number. 4. A compound is a.

Option A. mixture of more than one element which are chemicall bonded to)ether.

Option B. solution 8either li6uid or solid9 of elements or mixtures of elements to form a new material.Option C. mixture of more than one element which are mixed to)ether.

Correct Answer is. mixture of more than one element which are chemicall bonded to)ether.Explanation. A compound is two or more elements chemicall bonded.

Question Number. . A compound such as water can exist in how man states&.Option A. $.Option B. 3.

Option C. 1.Correct Answer is. 3.

Explanation. =olid# li6uid# )as.



Question Number. 5. =elect the correct statement from the followin).Option A. -emperature is the onl factor which can affect the state in which matter exists.

Option B. 7atter can onl exist in one of three states.

Option C. As temperature rises a solid will alwas become a li6uid and then a )as.Correct Answer is. 7atter can onl exist in one of three states.

Explanation. =olid# li6uid# )as. ressure also affects the state in which matter exists.

Question Number. 2:. 'sotopes of an element have.

Option A. a different atomic number.

Option B. the same number of neutrons but a different number of protons.Option C. the same number of protons but a different number of neutrons.

Correct Answer is. the same number of protons but a different number of neutrons.

Explanation. N'(.

Question Number. 21. Neutrons have.

Option A. no char)e.Option B. a positive char)e.

Option C. a ne)ative char)e.Correct Answer is. no char)e.

Explanation. N'(.

Question Number. 2$. Atomic 7A== number is the number of.Option A. protons.

Option B. protons and neutrons.Option C. electrons.

Correct Answer is. protons and neutrons.

Explanation. 7ass number is the total number of items in the nucleus 8protons and neutrons9.



Question Number. 23. *ow man electrons does an D=D orbital hold&.

Option A. 2.

Option B. .Option C. $.

Correct Answer is. $.Explanation. *ow man electrons does an D=D orbital hold&.

Question Number. 2+. -he number of electrons in a stable atom e6uals.

Option A. the number of neutrons in the nucleus.Option B. the number of protons and neutrons in the nucleus.

Option C. the number of protons in the nucleus.

Correct Answer is. the number of protons in the nucleus.Explanation. Electrons " rotons 8to cancel the electrical char)e9.

Question Number. 2. An isotope of an element has.Option A. the same atomic number but a different mass number.

Option B. the same mass number but a different atomic number.Option C. a different mass and atomic number.

Correct Answer is. the same atomic number but a different mass number.

Explanation. N'(. http/00en.wi,ipedia.or)0wi,i0'sotope

Question Number. 22. -he mass number of an element is based on.

Option A. the total number of protons and neutrons in its nucleus.Option B. the number of protons in its nucleus.

Option C. the number of neutrons in its nucleus.

Correct Answer is. the total number of protons and neutrons in its nucleus.Explanation. N'(. http/00chemistr.about.com0librar0)lossar0bldef4:+:.htm



Question Number. 24. -he atomic wei)ht of all atoms is related to.

Option A. *dro)en.Option B. Carbon.

Option C. *elium.Correct Answer is. Carbon.

Explanation. N'(. http/00education.ahoo.com0reference0dictionar0entr0atomic$:wei)ht

Question Number. 2. -he chemical bondin) of two or more elements is called.Option A. chemical analsis.

Option B. chemical snthesis.

Option C. chemical fusion.Correct Answer is. chemical snthesis.Explanation. N'(. http/00en.wi,ipedia.or)0wi,i0Chemicalsnthesis

Question Number. 25. -wo or more elements that are chemicall bonded to)ether and have an even mass distribution form a.

Option A. mixture.

Option B. substance.

Option C. chemical compound.

Correct Answer is. chemical compound.Explanation. %hen elements bond chemicall# the ma,e a compound.

Question Number. 4:. An atom that )ains one or more additional electrons is called.

Option A. a ne)ative ion.

Option B. a positive ion.Option C. an isotope.



Correct Answer is. a ne)ative ion.Explanation. Electrons are ne)ativel char)ed# so additional electrons ma,e an atom into a ne)ative ion.

Question Number. 41. 'onic bondin) involves.

Option A. electron sharin).Option B. attraction to a free electron cloud.

Option C. electron transfer.Correct Answer is. electron transfer.

Explanation. 'onic bondin) is formed when electrons are transferred.

Question Number. 4$. Non!metals form.

Option A. covalent bonds.Option B. ionic bond.Option C. metallic bonds.

Correct Answer is. covalent bonds.

Explanation. Non!metals usuall form covalent bonds.

Question Number. 43. Brownian 7ovement describes.

Option A. Brownian 7ovement describes.

Option B. the attraction of electrons.

Option C. the motion of molecules.Correct Answer is. the motion of molecules.Explanation. N'(. http/00www.hperdictionar.com0dictionar0Brownian@movement

Question Number. 4+. Elements on the extreme ri)ht of the periodic table are.

Option A. 7etals.Option B. Non!metals.



Option C. -ransition metals.Correct Answer is. Non!metals.

Explanation. N'(. http/00science.howstuffwor,s.com0atom.htm

Question Number. 4. Ox)en# atomic number is.Option A. trivalent.

Option B. univalent.Option C. bivalent.

Correct Answer is. bivalent.

Explanation. N'(. http/00www.sil.or)0lin)uistics0FlossarOf(in)uistic-erms0%hat'salenc.htm

Question Number. 42. -he atomic number of the atom of an element is based on.Option A. the number of neutrons in to nucleus.Option B. the number of protons in its nucleus.

Option C. the total number of protons and neutrons in its nucleus.

Correct Answer is. the number of protons in its nucleus.Explanation. N'(. http/00www.hperdictionar.com0dictionar0atomic@number

Question Number. 44. %ater is.

Option A. an element.

Option B. a mixture.Option C. a compound.Correct Answer is. a compound.

Explanation. N'(.

Question Number. 4. -he 7ass of a roton is approximatel.Option A. e6ual to the mass of an electron.



Option B. e6ual to the relative mass of a molecule.Option C. $::: times )reater than the mass of an electron.

Correct Answer is. $::: times )reater than the mass of an electron.

Explanation. N'(.

Question Number. 45. Noble )ases are and and have a full outer shell of electrons.

Option A. fluorine and neon.Option B. sulphur and neon.

Option C. helium# neon# ar)on.

Correct Answer is. helium# neon# ar)on.Explanation. N'(. http/00www.chemicalelements.com0)roups0noble)ases.html

Question Number. :. 'f a hdro)en atom has $ neutrons and 1 proton what ,ind of water would ou )et&.Option A. <resh water.

Option B. *eav water.

Option C. =alt water.Correct Answer is. *eav water.

Explanation. *eav water ! water containin) a substantial proportion of deuterium atoms# used in nuclear reactors.

Question Number. 1. A ma?orit of an atom;s mass is in the.

Option A. compound.Option B. isotope.Option C. nucleus.

Correct Answer is. nucleus.Explanation. N'(. http/00en.wi,ipedia.or)0wi,i0Atom

2.1. Mechanics – Statics.



Question Number. 1. An insulator has its electrons.

Option A. ti)htl bound.

Option B. loosel bound.Option C. otall free from the atoms.

Correct Answer is. ti)htl bound.Explanation. Aircraft Electricit G Electronics th edition -H Eismin.

Question Number. $. -he centre of )ravit of an aircraft is ad?usted b two wei)hts# 1: ,) and c,) plaed +m and $ m aft of

the c of ). -o what position must a $: ,) wei)ht be added to balance the c of )&.Option A. $.m.

Option B. +m.

Option C. $m.Correct Answer is. $.m.Explanation. 81: +9 @ 8 $9 " $: x & +:@1:"$: x & & " $.m.

Question Number. 3. <or the CF= sstem# the force is.

Option A. the ;N; which produces an acceration of 1 cm0s$ for a mass of )ram.Option B. the ;dne; which produces an acceleration of 1cm0s$ for a mass of )ram.

Option C. the ;pd1; which produces an acceleration of 1 cm0s$ for a mass of )ram.

Correct Answer is. the ;dne; which produces an acceleration of 1cm0 s$ for a mass of )ram.

Explanation. N'(.

Question Number. +. -he 6uadrature component of a vector is.Option A. +I to the ori)inal.

Option B. 5:I to the ori)inal.

Option C. 1:I to the ori)inal.Correct Answer is. 5:I to the ori)inal.



Explanation. N'(.

Question Number. . 1 Newton is e6ual to.Option A. 1 ,ilo)ram meter per second per second.

Option B. 1 ,ilo)ram of force.Option C. 1 ?oule per second.

Correct Answer is. 1 ,ilo)ram meter per second per second.Explanation. Jemember Newtons $nd law ;<"ma;. %ell# ;m; is in ,ilo)rams# ;a; is in metres per second s6uared 8or meters per second

per second9 so put the two to)ether and ;<; isK.

Question Number. 2. -he =' unit of mass is the.

Option A. metre 8m9.Option B. pound 8lb9.Option C. ,ilo)ram 8,)9.

Correct Answer is. ,ilo)ram 8,)9.

Explanation. N'(.

Question Number. 4. A slu) is a unit of.

Option A. speed.

Option B. mass.

Option C. wei)ht.Correct Answer is. mass.Explanation. A ver old unit of mass ! e6ual to 1+.2 ,).

Question Number. . 'f an ob?ect in air is submer)ed in a li6uid or a )as its wei)ht will.

Option A. increase.Option B. decrease.



Option C. remain the same.Correct Answer is. remain the same.

Explanation. thin) that can chan)e the wei)ht of an ob?ect is the )ravitational field it is in.

Question Number. 5. 'f a material is loaded excessivel and is permanentl deformed# it is said to be.Option A. stretched.

Option B. stressed.Option C. strained.

Correct Answer is. strained.

Explanation. =train " extension 0 ori)inal len)th 8=tress " force 0 area9.

Question Number. 1:. -he =' unit of force is the.Option A. Newton 8N9.Option B. 7etre 8m9.

Option C. ascal 8a9.

Correct Answer is. Newton 8N9.Explanation. N'(.

Question Number. 11. -he formula for calculatin) stress is.

Option A. load divided b cross sectional area.Option B. area divided b load.

Option C. load multiplied b cross sectional area.Correct Answer is. load divided b cross sectional area.

Explanation. N'(.

Question Number. 1$. =tress is )iven b.Option A. force per unit area.



Option B. extension per ori)inal len)th.Option C. force per ori)inal len)th.

Correct Answer is. force per unit area.

Explanation. N'(.

Question Number. 13. -he force which opposes twistin) deformation is.

Option A. torsion.Option B. strain.

Option C. shear.

Correct Answer is. torsion.Explanation. A torsional force opposes twistin).

Question Number. 1+. A force perpendicular to a beam produces what tpe of stress&.Option A. compressive.

Option B. shear.

Option C. tensile.Correct Answer is. shear.

Explanation. perpendicular to a beam 8such a s a man on a divin) board9 produces bendin) and shear stress.

Question Number. 1. -he extension of a sprin) can be determined usin).Option A. Charles; (aw.

Option B. Newton;s $nd (aw.Option C. *oo,e;s (aw.

Correct Answer is. *oo,e;s (aw.Explanation. *oo,e;s law is ;extension is proportional to force;.

Question Number. 12. %hen a steel bar is overstressed# what is the name of the point at which it does not return to its ori)inal



form after the load is released&.Option A. Lltimate point.

Option B. Mield point.

Option C. Moun);s modulus.Correct Answer is. Mield point.

Explanation. N'(.

Question Number. 14. -wo couples with ma)nitude < act a)ainst each other. -he resultant will be.

Option A. !$<.

Option B. $<.Option C. :.

Correct Answer is. :.

Explanation. A ;couple; is $ forces actin) in the same rotational direction an e6ual distance from a pivot point 8li,e turnin) a dieholder9. -wo couples in opposition will cancel each other.

Question Number. 1. -he hei)ht of mercur re6uired to )ive 1 bar is.Option A. 4:: mm.

Option B. 1::: mm.Option C. 42: mm.

Correct Answer is. 42: mm.

Explanation. 1 bar is almost atmospheric pressure.

Question Number. 15. A vessel has $ ml of water which produces 1: ,a. 'f another 1$ ml of water is added# what will be

the pressure in the vessel&.Option A. +: ,a.

Option B. : ,a.

Option C. 2: ,a.Correct Answer is. 2: ,a.



Explanation. pressure " densit )ravit hei)ht. $ml @ 1$ml " 1:ml or 2 times. =o 2 hei)ht " 2 pressure.

Question Number. $:. -wo hdraulic ?ac,s with different diameters have the same fluid pressures enterin) at the same rate.-he will extend at.

Option A. the same rate until the smaller ?ac, becomes full.Option B. the same rate.

Option C. different rates.Correct Answer is. different rates.

Explanation. diameter will have the )reater force. -he ;trade!off; for this is that it will move slower.

Question Number. $1. %hat load can be lifted on ?ac, B&.

Option A. 3::N.Option B. $::N.Option C. 1::N.

Correct Answer is. 1::N.

Explanation. 1: times the area# then it can lift 1: times the load.

Question Number. $$. -he most common method of expressin) pressure is in.

Option A. inch pounds per s6uare inch.

Option B. )rams per s6uare inch.Option C. pounds per s6uare inch.

Correct Answer is. pounds per s6uare inch.Explanation. ressure is usuall measured in ounds per =6uare 'nch 8='9.

Question Number. $3. -he difference between two pressures is.

Option A. vacuum pressure.Option B. differential pressure.



Option C. static pressure.Correct Answer is. differential pressure.

Explanation. ifferential pressure is the difference between two pressures 8such as inside and outside the aircraft cabin9.

Question Number. $+. %hat tor6ue loadin) would ou appl to a nut if the force is .N # exerted $:.:cm from axis ofrotation&.

Option A. 11N.mOption B. 11.1N.cm

Option C. 1.1N.m

Correct Answer is. 1.1N.mExplanation. -or6ue loadin) " force distance.

Question Number. $. 'n a ?ac, with a ram onl on one side and hdraulic fluid applied from both sides.Option A. a condition of hdraulic loc, exists and no movement will ta,e place.

Option B. the ram will move opposite to the side where the ram is due to pressure actin) on differential areas.

Option C. the ram will move to the side where the ram is# due to pressure actin) on differential areas.Correct Answer is. the ram will move opposite to the side where the ram is due to pressure actin) on differential areas.

Explanation. -he non!ram side has a )reater area# so the ram will be pushed from that side to the ram side.

Question Number. $2. Lsin) the same hdraulic pressure# the force applied b a hdraulic ?ac, of + s6. inch piston area.Option A. will be half that applied b a similar ?ac, of $ s6. inch piston area.

Option B. will be e6ual to that applied b a similar ?ac, of $ s6. inch piston area.Option C. will be twice that applied b a similar ?ac, of $ s6. inch piston area.

Correct Answer is. will be e6ual to that applied b a similar ?ac, of $ s6. inch piston area.Explanation. <orce " pressure area.

Question Number. $4. A pressure of 1:: =' acts on two ?ac,s in a hdraulic sstem# havin) piston areas $ s6 in and + s6 in.



Option A. the smaller ?ac, will exert a force of : lb and the lar)er a force of $ lb.

Option B. the smaller ?ac, will exert a force of $:: lb and the lar)er a force of +:: lb.

Option C. the two ?ac,s will exert the same force.Correct Answer is. the smaller ?ac, will exert a force of $:: lb and the lar)er a force of +:: lb.

Explanation. <orce " pressure area. 1:: $ " $:: lbs. 1:: + " +:: lbs.

Question Number. $. -he purpose of an accumulator in a hdraulic sstem is to.

Option A. collect air from the hdraulic fluid# thus reducin) the re6uirement for fre6uent bleedin).

Option B. relieve excess pressure.Option C. store hdraulic fluid under pressure.

Correct Answer is. store hdraulic fluid under pressure.

Explanation. An accumulator stores hdraulic pressure for use when the main pressure pump fails.

Question Number. $5. 'f the hdraulic sstem accumulator has a low air pressure# it will cause.

Option A. rapid pressure fluctuations durin) operation of services.Option B. rapid movement of the operatin) ?ac,s.

Option C. slow build up of pressure in the sstem.Correct Answer is. rapid pressure fluctuations durin) operation of services.

Explanation. -he secondar purpose of an accumulator is to damp out pressure fluctuations.

Question Number. 3:. -he specific tor6ue loadin) for a bolt is : lbs.ins but an extension of $ inches is needed to reach the bolt in addition to the inches tor6ue wrench. %hat will the actual readin)&.

Option A. + lb.ins.Option B. +: lb.ins.

Option C. 2: lb.ins.

Correct Answer is. +: lb.ins.Explanation. New tor6ue readin) " desired tor6ue x (08x@(9. : 01: " +: lb.ins.



Question Number. 31. 'f 1:: psi hdraulic pressure is pumped into an accumulator# with a pre!char)e air pressure of 1::: psi

the )au)e will read.Option A. $:: psi.

Option B. 1:: psi.Option C. 1::: psi.

Correct Answer is. 1:: psi.Explanation. -he accumulator pressure )au)e reads the hdraulic pressure onl when it is above the char)e pressure.

Question Number. 3$. Moun);s modulus is.

Option A. stress strain.Option B. strain 0 stress.

Option C. stress 0 strain.Correct Answer is. stress 0 strain.

Explanation. Moun);s 7odulus 8E9 is the ratio =tress 0 =train.

Question Number. 33. A clinder filled with water to half a metre will exert a pressure of.Option A. +.5 a.

Option B. +5:: a.

Option C. +5 a.Correct Answer is. +5:: a.

Explanation. ressure " densit )ravit hei)ht " 1::: 8for water9 1: :. " ::: a. Answer is +5:: a because )ravit issli)htl less than 1: 85.1 to be exact9.

Question Number. 3+. A mass of 1:,) placed $ metres awa from a pivot will have a moment of.

Option A. 152 N7.Option B. : N7.



Option C. $: N7.Correct Answer is. 152 N7.

Explanation. 1: ,) " 1: 5. " 5N. 7oment " force radius " 5 $ " 152 Nm.

Question Number. 3. $ litres of fuel exerts a pressure of 1:Ha. 'f a further 1$ litres is added# the pressure will now be.

Option A. : ,a.Option B. 2: ,a.

Option C. +: ,a.

Correct Answer is. 2: ,a.Explanation. -otal <uel " 1: litres " 2 $. 2 ori)inal pressure " 2: ,a.

Question Number. 32. 1::: lb0in$ is in an accumulator. 'f 3::: lb0in$ of hdraulic fluid is pumped in# what is the pressure onthe air side&.

Option A. 3::: lb0in$.

Option B. +::: lb0in$.Option C. 1::: lb0in$.

Correct Answer is. 3::: lb0in$.Explanation. -he piston does not move until the hdraulic pressure exceeds 1::: psi. <rom then on# the air and hdraulic pressures

are e6ual 8at all times that the piston is off its stops9.

Question Number. 34. A fractional decrease in volume of a material when it is compressed is a function of the.Option A. compressive strain.

Option B. compressive strain.Option C. bul, modulus.

Correct Answer is. bul, modulus.

Explanation. Bul, modulus " ratio of chan)e in pressure to the fractional volume compression.



Question Number. 3. A ram has a piston with $ in$. Another ram with a piston of + in$ will provide.

Option A. the same force.

Option B. double the force.Option C. s6uare the force.

Correct Answer is. double the force.Explanation. ouble the area " double the force. 8*owever# if the 6uestion said double the radius or diameter# the force is a s6uare of

that# i.e +x9.

Question Number. 35. *ow much force is exerted b piston if it is sub?ected to a pressure of 3::: a and has surface area of$. m$&.

Option A. 4:: N.Option B. 3::: N.

Option C. 1$:: N.Correct Answer is. 4:: N.

Explanation. <orce " pressure area " 3::: $. " 4. N.

Question Number. +:. A force of 1: million Newtons is expressed numericall as.Option A. 1: 7N.

Option B. 1: 7N.

Option C. 1 7N.Correct Answer is. 1: 7N.

Explanation. million Newtons " 1: 7N 87e)aNewtons9.

Question Number. +1. A millilitre is e6ual to.

Option A. one million litres.

Option B. one millionth of a litre.Option C. one thousandth of a litre.



Correct Answer is. one thousandth of a litre.Explanation. A millilitre " 101::: litre.

Question Number. +$. 'f a s6uare has an area of 5m$# one side is.

Option A. 3 m.Option B. 3 m$.

Option C. 3 s6. m.Correct Answer is. 3 m.

Explanation. 3 m 3m " 5 m$.

Question Number. +3. A vector 6uantit is a 6uantit which.Option A. possesses sense# ma)nitude and direction.

Option B. possesses direction onl.Option C. possesses sense onl.

Correct Answer is. possesses sense# ma)nitude and direction.

Explanation. A vector 6uantit has ma)nitude AN direction. 8sense and direction are the same thin)9.

Question Number. ++. One atmosphere is e6ual to.

Option A. 1.$$ ,)0m$.

Option B. 1+.4 lbf0in$.Option C. $.5 inches of *).

Correct Answer is. 1+.4 lbf0in$.Explanation. atmosphere " 1+.4 pounds!force 8lbf9 per s6uare inch.

Question Number. +. =train is calculated b.

Option A. Ori)inal (en)th Extension.Option B. Extension P Ori)inal (en)th.



Option C. Ori)inal (en)th P Extension.Correct Answer is. Extension P Ori)inal (en)th.

Explanation. =train " chan)e in len)th divided b ori)inal len)th.

Question Number. +2. %hen a twistin) force is applied to a bolt# what stress is exerted on to the head&.Option A. =hear.

Option B. Compressive.Option C. -orsion.

Correct Answer is. -orsion.

Explanation. A twistin) force applied to a bolt produces ;torsion stress; 8which technicall is a form of shear9.

Question Number. +4. %hen ou overstress a steel bar# what is the point called where it does not return to its ori)inal form&.

Option A. lastic limit.

Option B. Elasticit limit.

Option C. eformation limit.Correct Answer is. Elasticit limit.

Explanation. -he point at which the stressed bar does not return to its ori)inal form is called the ;elastic limit;.

Question Number. +. -he formula for calculatin) shear is.Option A. force P cross!sectional area.

Option B. force area.Option C. force P area parallel to the force.

Correct Answer is. force P area parallel to the force.Explanation. <ormula for shear 8stress9 is =hear stress " force0area parallel to force.

Question Number. +5. A force 1: N is placed $ 7eters from a pivot point# what is the moment&.



Option A. $: Nm.Option B. $: Nm.

Option C. : Nm.

Correct Answer is. $: Nm.Explanation. N at $ m distance produces 1: $ " $: Nm.

Question Number. :. 'f a tensile load is placed on a bar# it will.Option A. bend.

Option B. crush.

Option C. stretch.Correct Answer is. stretch.

Explanation. tensile load placed on a bar will stretch it.

Question Number. 1. %hat atmospheric conditions will cause the true landin) speed of an aircraft to be hi)hest&.

Option A. (ow temp# hi)h humidit.

Option B. *ead wind# low humidit.Option C. *i)h temp# hi)h humidit.

Correct Answer is. *i)h temp# hi)h humidit.Explanation. (ift is least at low densit. ensit is lowest at hi)h temperature and hi)h humidit.

Question Number. $. =tructures desi)ned to withstand compression are called a.

Option A. tie.Option B. strut.

Option C. beam.Correct Answer is. strut.

Explanation. -ension ! -ie# Compression ! =trut# Bendin) ! Beam.



Question Number. 3. 1 ascal e6uals.Option A. 1: N0m$.

Option B. 1 N0m$.Option C. 1: Nm.

Correct Answer is. 1 N0m$.

Explanation. 1 a " 1 N0m$.

Question Number. +. -he addition of $ different vectors to produce another vector is called.

Option A. component.

Option B. resolution.Option C. resultant.

Correct Answer is. resultant.Explanation. -he resultant of two vectors. -he mathematical process is actuall called ;composition;.

Question Number. . -wo items wei)hin) 11,) and ,) are placed $m and 1m respectivel aft of the C of F of an aircraft.

*ow far forward of the C of F must a wei)ht of 3:,) be placed so as not to chan)e the C of F&.Option A. $m.

Option B. 1.m.Option C. 1m.

Correct Answer is. 1m.

Explanation. -otal moment " 811$9 @ 819 " 3:,)m. -he 3: ,) mass must be placed such that 3:,) m " 3: ,) m. *ence "1m.

Question Number. 2. A point at which the total force of a bod acts is ,nown as the.Option A. centre of )ravit.

Option B. point of e6uilibrium.

Option C. centre of mass.Correct Answer is. centre of )ravit.



Explanation. 'f b force the mean ;wei)ht; then it is Centre of Fravit.

Question Number. 4. A load of 2::N is suspended b a cable. 'f the stress in the cable is said to be limited to 1N0mm$ the

minimum cross sectional area of the cable must be.

Option A. :.:$mm$.Option B. 5:::mm$.

Option C. +:mm$.Correct Answer is. +:mm$.

Explanation. =tress " <orce0Area. Area " <orce0=tress " 2::01 " +:mm$.

Question Number. . A sprin)# operatin) within its elastic ran)e# shortens b 2:mm when a load of +:N is applied to it.Calculate the total shortenin) when the load is increased b 1$:N.

Option A. $mm.Option B. +mm.

Option C. 4mm.

Correct Answer is. 4mm.Explanation. 2::0+: 2: " 4mm.

Question Number. 5. -he c.). of a trian)ular plate is at the intersection of.

Option A. medians from a vertex to the opposite side.Option B. an)le bisectors.

Option C. perpendicular bisectors.Correct Answer is. medians from a vertex to the opposite side.

Explanation. N'(.

Question Number. 2:. %hen a s6uare bloc, of material is pushed into a parallelo)ram# the material is under what stress tpe&.



Option A. Compression.Option B. -orsion.

Option C. =hear.Correct Answer is. =hear.

Explanation. N'(. http/00)roups.phsics.umn.edu0demo0oldpa)e0demo)ifs01J3:$:.F'<

Question Number. 21. A 6uantit which has siRe but no direction is called a.Option A. =calar.

Option B. 7oment.

Option C. ector.Correct Answer is. =calar.

Explanation. scalar has siRe onl 8mass# area etc.9. A vector has siRe and direction 8velocit# force etc.9.

Question Number. 2$. -he advanta)e of usin) a machine is.

Option A. mechanical advanta)e of input.

Option B. mechanical advanta)e of output.Option C. input wor, is less than the output wor,.

Correct Answer is. mechanical advanta)e of output.Explanation. 7echanical advanta)e is usuall on the outp.

Question Number. 23. %hich of the followin) can transmit pressure&.

Option A. (i6uids and )ases.Option B. =olids and )ases.

Option C. An matter can transmit pressure# dependin) on temperature.Correct Answer is. (i6uids and )ases.

Explanation. N'(.



Question Number. 2+. A moment is created b a force of N actin) +m from the pivot on a uniform bar. At what distance musta force of 1:N be applied to balance the beam&.

Option A. m.Option B. + m.

Option C. $ m.

Correct Answer is. $ m.Explanation. + " $:# 1: " $: " $m.

Question Number. 2. A lever of len)th 1: cm is used with a fulcrum placed 1 cm from the end bearin) the load. 'ts

mechanical advanta)e is.Option A. 102.

Option B. 4.Option C. 2.

Correct Answer is. 2.Explanation. -he -O-A( len)th is 1: cm# so the input end is 5: cms. 5:01 " 2.

Question Number. 22. -he stress created when a material is pulled apart is called.

Option A. tension.Option B. torsion.

Option C. compression.

Correct Answer is. tension.Explanation. N'(.

Question Number. 24. -he ield point of a material is the point at which.Option A. strain becomes proportional to stress.

Option B. the material ruptures or brea,s.

Option C. permanent deformation ta,es place.Correct Answer is. permanent deformation ta,es place.



Explanation. N'(.

Question Number. 2. Assumin) constant temperature. 'f a steel bar of len)th $ m deforms to a len)th of $.$ m under applied

load. -he strain is.

Option A. 1.1.Option B. :.5.

Option C. :.1.Correct Answer is. :.1.

Explanation. =train " Extension0Ori)inal (en)th " :.$0$ " :.1.

Question Number. 25. A =calar 6uantit has.Option A. sense# ma)nitude and direction.

Option B. sense and direction.Option C. ma)nitude onl.

Correct Answer is. ma)nitude onl.

Explanation. N'(.

Question Number. 4:. A hdraulic piston of $. s6uare inches produces 4::lbf# %hat pressure is used&.

Option A. ::: ='.

Option B. 3::: ='.Option C. 4::: ='.

Correct Answer is. 3::: ='.Explanation. ressure " <orce0Area.

Question Number. 41. <orces passin) throu)h a common point are said to be.

Option A. coherent.Option B. coplanar.



Option C. concurrent.Correct Answer is. concurrent.

Explanation. N'(.

Question Number. 4$. A force of Newtons actin) perpendicularl at 3:: centimetres from the pivot produces a moment of.

Option A. 1:: Newton metre.Option B. 1 Newton metre.

Option C. 1. Hilonewton millimetre.

Correct Answer is. 1 Newton metre.Explanation. 3m N " 1 Nm.

Question Number. 43. E6uilibrium of translation occurs when.Option A. downward forces e6ual upward 8reactive9 forces.

Option B. cloc,wise moments e6ual countercloc,wise moments.

Option C. cloc,wise forces and countercloc,wise forces are e6ual.Correct Answer is. downward forces e6ual upward 8reactive9 forces.

Explanation. -ranslation is linear movement.

Question Number. 4+. -he conversion factor to convert litres to pints is.Option A. :.4.

Option B. 1.42.Option C. $.$.

Correct Answer is. 1.42.Explanation. N'(. http/00www.thetipsban,.com0convert.htm

Question Number. 4. *draulic pressure can be restored b.



Option A. the use of pressure0heat exchan)e.Option B. compressin) the air char)e in an accumulator.

Option C. compressin) the fluid in a reservoir.Correct Answer is. compressin) the air char)e in an accumulator.

Explanation. N'(.

Question Number. 42. %hen chec,in) a hdraulic accumulator initial air pressure# the hdraulic sstem pressure.Option A. should be at the normal wor,in) pressure.

Option B. is not important.

Option C. should be released.Correct Answer is. should be released.

Explanation. N'(.

Question Number. 44. One ,) is the mass of.

Option A. one litre of pure water.

Option B. one pint of pure water.Option C. one )allon of pure water.

Correct Answer is. one litre of pure water.Explanation. N'(. http/00www.bartleb.com020032.html

Question Number. 4. -he centre of )ravit of a trian)le is.

Option A. 103 the median from the base.Option B. 103 the bisector from the base.

Option C. 103 the hei)ht from the base.Correct Answer is. 103 the median from the base.

Explanation. http/00en.wi,ipedia.or)0wi,i0-rian)le



Question Number. 45. A liftin) machine moves with an effort# a distance of $:: cm# in order to raise it :. m. -he elocitJatio is.

Option A. :.$.Option B. +.

Option C. +:.

Correct Answer is. +.Explanation. istance ratio input0 output " $0:. " +. elocit ratio is same as istance ration.

Question Number. :. -wo ectors are at 5: de)rees to each other havin) ma)nitudes of 3N and +N. -he resultant is.

Option A. N.Option B. 1N.

Option C. 4N.Correct Answer is. N.

Explanation. ectors ma,e a 3!+! trian)le.

Question Number. 1. %hich of the followin) has no units&.Option A. =train.

Option B. =tress.Option C. Elasticit.

Correct Answer is. =train.

Explanation. N'(.

2.2. Mechanics – Kinetics.

Question Number. 1. <or a car wei)hin) 1::: N# what force would be re6uired to accelerate the car to 3 ms!$.

Option A. 3$4: N.

Option B. 3:. N.Option C. 3::: N.



Correct Answer is. 3:. N.Explanation. < " ma < " 1:::05.1 3 < " 3:. N 8-he ;divide b; 5.1 is necessar to convert the 1::: N into a mass 8in ,)99.

Question Number. $. A time period of 1: microseconds is e6ual to a fre6uenc of.

Option A. 1:: ,*R.Option B. 1: ,*R.

Option C. 1 7hR.Correct Answer is. 1:: ,*R.

Explanation. <re6uenc " 10time period. 10:.::::1 " 1::#::: " 1:: ,*R.

Question Number. 3. -he =' unit of acceleration is the.Option A. metre per second s6uared 8m0s$9.

Option B. metre per second 8m0s9.Option C. s6uare metre 8m$9.

Correct Answer is. metre per second s6uared 8m0s$9.

Explanation. N'(.

Question Number. +. 'f a bod starts at rest and reaches + m0s in 3 seconds# its acceleration is.

Option A. $ m0s$.

Option B. 1+ m0s$.Option C. $$ m0s$.

Correct Answer is. $ m0s$.Explanation. Acceleration " chan)e in speed 0 time.

Question Number. . -he =' unit of velocit is the.

Option A. metre per second s6uared 8m0s$9.Option B. metre per second 8m0s9.



Option C. metre 8m9.Correct Answer is. metre per second 8m0s9.

Explanation. N'(.

Question Number. 2. An aircraft flies 13: nmiles in $h 1mins. %hat is the avera)e speed&.Option A. 2:: nmiles0hour.

Option B. 2:: miles0hour.Option C. 1: nmiles0hour.

Correct Answer is. 2:: nmiles0hour.

Explanation. Avera)e speed " distance0time " 13:0$.$ " 2:: nm0h.

Question Number. 4. A sprin) extends 4 cm to the )round and bac, a)ain $: times a minute. %hat is the period&.

Option A. 4 cm.Option B. 3 seconds.

Option C. 103 ccle.

Correct Answer is. 3 seconds.Explanation. <re6uenc " $:02: " 103 *R. -ime period " 10f " 3 seconds.

Question Number. . A cclist )oes from rest to : m0s in seconds. %hat is the avera)e acceleration&.

Option A. 1: m0s$.Option B. 1$ m0s$.

Option C. m0s$.Correct Answer is. 1: m0s$.

Explanation. Acceleration " chan)e in speed 0 time.

Question Number. 5. %hat is the period of a fre6uenc of + *R&.Option A. seconds.



Option B. :.$ seconds.Option C. + seconds.

Correct Answer is. :.$ seconds.Explanation. eriod " 10f.

Question Number. 1:. A dot rotates around the circumference of a circle. 'f the vertical position of this dot is plotted on a )raph

with respect to time the result will be.Option A. a linear motion.

Option B. a transverse waveform.

Option C. a sinusoidal waveform.Correct Answer is. a sinusoidal waveform.

Explanation. -his is wh an AC )enerator produces a sine wave fre6uenc.

Question Number. 11. A freel fallin) bod# fallin) from a hei)ht of $,m# and assumin) ) " 1:m0s$# will stri,e the )round in a

time of.

Option A. +::s.Option B. :s.

Option C. $:s.Correct Answer is. $:s.

Explanation. <rom the e6uations of motion s " ut @ 10$at$. 'f it starts at rest u 8and hence ut9 is Rero. Lse s " $::: m# plu) in the

numbers and transpose for t.

Question Number. 1$. %hat is the an)ular velocit of a shaft rotatin) at 3::rpm in radians0second&.

Option A. 1:S radians0second.Option B. $S radians0second.

Option C. S radians0second.

Correct Answer is. 1:S radians0second.Explanation. velocit " $S8J7902: " $S 3::02: " 1:S radians0second.



Question Number. 13. -he force that acts on a bod to cause it to rotate in a circular path is called the.Option A. centripetal force.

Option B. centrifu)al force.

Option C. inertia force.Correct Answer is. centripetal force.

Explanation. Centripetal; force is the force pullin) the rotatin) ob?ect towards the centre of rotation. ;Centrifu)al; force is the e6ualand opposite reaction.

Question Number. 1+. An aircraft of $ metric tonnes uses :: ,ilo?oules ,inetic ener) to ma,e an emer)enc stop. 'ts bra,es

appl a force of 1: ,iloNewtons. %hat distance does it travel before it comes to a stop&.Option A. +:m.

Option B. ::m.Option C. :m.

Correct Answer is. :m.

Explanation. Ener) " <orce istance. ::#:::T " 1:#:::N x istance. istance " &&.

Question Number. 1. A bod rotatin) at an an)ular velocit of radians0sec# with a radius of metres has a speed of.

Option A. S metres per second.

Option B. metres per second.Option C. $ metres per second.

Correct Answer is. $ metres per second.Explanation. velocit " Jadius Ome)a 8Ome)a " radians0sec9. " " $ m0s.

Question Number. 12. A mass of +:: ,) moves $4metres# with a force of +N# what is the wor, produced&.

Option A. 1+ T.Option B. 3.$ HT.



Option C. 1:.1 HT.Correct Answer is. 1+ T.

Explanation. %or, " <orce x istance " + $4 " 1+ T. 't is not movin) under )ravit so the +:: ,) is a red herrin).

Question Number. 14. A mass on a sprin) nearl hits the )round $: times a minute# its fre6uenc is.Option A. 3 ccles per second.

Option B. 103 ccle per second.Option C. $: ccles per second.

Correct Answer is. 103 ccle per second.

Explanation. ccles per minute " $:02: ccles per second " $02 " 103 ccle per second.

Question Number. 1. A bod travellin) at $: m0s accelerates to 32 m0s in seconds# what is its acceleration&.

Option A. m0s$.Option B. + m0s$.

Option C. $ m0s$.

Correct Answer is. $ m0s$.Explanation. " u @at 32 " $: @ a 32!$: " a 120 " a.

Question Number. 15. A bod dropped from 1: m will hit the )round in.

Option A. $ seconds.Option B. :.$ seconds.

Option C. 1.+1 second.Correct Answer is. 1.+1 second.

Explanation. s " ut @ 10$at$. -a,e s " 1:# u " :# a " ) " 1:. Calculate t. 8Jemember that : t " :9.

Question Number. $:. %hat is the rate of )ravit&.Option A. 1$.4 m0s$.



Option B. :.51 m0s$.Option C. 5.1 m0s$.

Correct Answer is. 5.1 m0s$.Explanation. Fravit " 5.1 m0s$.

Question Number. $1. An ob?ect travels 1 ,m in 1 minute 3: seconds. %hat is its avera)e speed&.

Option A. $:: m0s.Option B. $4: m0s.

Option C. 1:: ms.

Correct Answer is. $:: m0s.Explanation. Avera)e speed " distance0time " 1::: metres 0 5: seconds " $:: m0s.

Question Number. $$. 1:: m is approximatel.Option A. $$: ards.

Option B. 1:5 ards.

Option C. 22 ards.Correct Answer is. 1:5 ards.

Explanation. m " 3.3 ft. 1:: m " 33: ft. 3 ft " 1 d so 33:03 " 11: ards.

Question Number. $3. A car moves over a distance of miles at stead speed in 1: minutes. %hat is the speed&.Option A. 3: mph.

Option B. 1 mph.Option C. 2: mph.

Correct Answer is. 3: mph.Explanation. in 1: mins# 1: miles in $: mins# 1 miles in 3: mins# 3: miles in 1 hr.

Question Number. $+. A spaceship travels a distance of +:#::: miles in $ das. %hat is its speed&.



Option A. +#::: mph.Option B. 32#::: mph.

Option C. 1:#::: mph.Correct Answer is. 1:#::: mph.

Explanation. +:#:::0+ " 1:#::: 7*.

Question Number. $. A cclist covers a distance of 1#::: m at a constant speed in 5: seconds# %hat is his speed&.Option A. : m0s.

Option B. 1$. m0s.

Option C. 11.1 m0s.Correct Answer is. 11.1 m0s.

Explanation. 1:::m05:secs " 11.1 m0s.

Question Number. $2. *ow lon) will it ta,e a car movin) at 2: ,m0hr to travel 5: ,m&.

Option A. +: minutes.

Option B. 4 minutes.Option C. 5: minutes.

Correct Answer is. 5: minutes.Explanation. ,m " 1. 2:# therefore at 2: ,m0h it will ta,e 1. hours " 5: mins.

Question Number. $4. An aircraft travels at :: ,m0hr for 3: minutes at stead speed. *ow far does it move in that time&.

Option A. :: ,m.

Option B. 1::: ,m.Option C. $: ,m.

Correct Answer is. $: ,m.

Explanation. :: ,m0h for 3: m0s " a distance of $: ,m.



Question Number. $. %hich of the followin) affect the velocit of an ob?ect&.

Option A. =peed and direction.Option B. =peed and distance.

Option C. =peed and mass.

Correct Answer is. =peed and direction.Explanation. elocit is a vector 8it has ma)nitude ! speed# and direction9.

Question Number. $5. Acceleration involves.

Option A. chan)e in speed or direction of movement.Option B. chan)e of position with time.

Option C. stead speed over a fixed period of time.Correct Answer is. chan)e in speed or direction of movement.

Explanation. Acceleration is a vector 8it has ma)nitude as well as direction9.

Question Number. 3:. %hat acceleration is produced if a mass increases speed from rest to 1: ft0sec in seconds&.Option A. $ ft0sec$.

Option B. : ft0sec$.Option C. :. ft0sec$.

Correct Answer is. $ ft0sec$.

Explanation. v " u @ at; where u " :# v " 1:# t " # so a " v0t " 1:0 " $.

Question Number. 31. A car travellin) at a speed of m0s accelerates at the rate of 1 m0s$. *ow lon) will it ta,e to reach a

speed of $: m0s&.Option A. 1 secs.

Option B. 1: secs.

Option C. $: secs.Correct Answer is. 1 secs.



Explanation. -he car )ains 1 m0s ever second# so to add 1 m0s it will ta,e 1 seconds.

Question Number. 3$. Newtons laws of motion appl to.

Option A. solid substances onl.

Option B. all substances irrespective of state.Option C. )ases and li6uids onl.

Correct Answer is. all substances irrespective of state.Explanation. Newtons laws appl to solids# li6uids and )ases.

Question Number. 33. %hich of Newtons (aws appl most directl to an aircraft which is acceleratin) down a runwa&.

Option A. -he 3rd law.

Option B. -he $nd law.Option C. -he 1st law.

Correct Answer is. -he $nd law.

Explanation. -echnicall# all of Newton;s laws appl but the word acceleratin) indicates the are loo,in) for the second law ! <orce" mass x acceleration.

Question Number. 3+. %hich of Newtons (aws appl most directl to a car which is slowin) down due to the bra,in) action&.

Option A. -he 1st law.

Option B. -he 3rd law.Option C. -he $nd law.

Correct Answer is. -he $nd law.Explanation. -he car is deceleratin) therefore it is obein) the second law ! <orce " mass acceleration 8but technicall all three

laws appl9.



Question Number. 3. < " ma is an e6uation which expresses.Option A. Newtons 1st law.

Option B. Newtons $nd law.Option C. Newtons 3rd law.

Correct Answer is. Newtons $nd law.Explanation. Newton;s second law is < " ma 8<orce " mass acceleration9.

Question Number. 32. %hat force is re6uired to produce an acceleration of m0s$ on a mass of $ ,)&.

Option A. $. N.

Option B. 1: N.Option C. : N.

Correct Answer is. 1: N.Explanation. < " ma " $ " 1: Newtons 8<orce is measured in Newtons9.

Question Number. 34. 'f a force of 1: lbf produces an acceleration of $. ft0sec$# on what mass is it actin)&.

Option A. + slu)s.Option B. + lb.

Option C. $ slu)s.Correct Answer is. + slu)s.

Explanation. < " ma# 1: " m $.# m " 1:0$. " + slu)s.

Question Number. 3. %hat is acceleration&.Option A. Jate of chan)e of velocit.

Option B. Jate of chan)e of movement.Option C. Jate of chan)e of position.

Correct Answer is. Jate of chan)e of velocit.

Explanation. Acceleration is rate of chan)e of velocit.



Question Number. 35. 'n a )ear train the driver has 1:: -' and the driven has : -'.

Option A. -he driven rotates twice as fast.Option B. -he driver and driven rotate at the same speed.

Option C. -he driven rotates half as fast.Correct Answer is. -he driven rotates twice as fast.Explanation. smaller wheel rotates at the faster speed 8of a ratio e6ual to their diameters9.

Question Number. +:. An aircraft of $ metric tonnes lands with +:: ,ilo?oules of ener)# 1: ,iloNewtons of force is applied at

the bra,es# how far does the aircraft ta,e to stop&.Option A. +: 7.

Option B. +:: 7.Option C. :: 7.

Correct Answer is. +: 7.Explanation. %or, done " <orce ener). %or, re6uired to convert all the ,inetic ener) " <orce distance. =o <orce distance "

+::#::: Toules. 1:#::: N distance " +::#:::. istance " +: m.

Question Number. +1. A radar rotates 1 revolution each 3: seconds and uses 1:T of ener) each revolution. *ow man ?oulesdoes it use in a da&.

Option A. $. ,T.

Option B. 4$: ,T.Option C. 4$:: ,T.

Correct Answer is. $. ,T.Explanation. "$ 2: " 1$: revs0hour " 1$: $+ " $: revs0da. $: 1: " $:: Toules " $. ,T.

Question Number. +$. A li)ht aircraft flies in a semi!circle from point A to point B. 'f the circle has a radius of $:,m and the

time ta,en is 3: minutes# the avera)e speed is.Option A. 1$.4 ,m0h.



Option B. 11: ,m0h.Option C. : ,m0h.

Correct Answer is. 1$.4 ,m0h.Explanation. arc distance " radius x an)ular distance 8in rads9 " $:S " 2: ,m 8approx# ta,in) Sas 39. 2: ,m in 3: minutes is 1$:

,m0h 8answer is sli)htl more because S " 3.1+# not 3.

Question Number. +3. -he landin) speed of an aircraft is + m0s$. 'f the maximum deceleration is 3m0s$ the minimum len)th of runwa re6uired is.

Option A. 12$m.

Option B. +2m.Option C. 32:m.

Correct Answer is. +2m.Explanation. N'(.

Question Number. ++. -he number of radians in a semi circle are.

Option A. exactl 3.Option B. S.

Option C. $S.Correct Answer is. S.

Explanation. full circle " $S radians# so a semicircle " S radians " 3.1+$.

Question Number. +. -he an)ular velocit of :: J7 is# in rads0seconds is e6ual to.Option A. 1:::S rads0s.

Option B. .33S rads0s.Option C. 12.22S rads0s.

Correct Answer is. 12.22S rads0s.

Explanation. :: $S02: " 1:::S02: " 1::S02 " 12.22.



Question Number. +2. %hich of Newton;s laws relates to the formula/ <orce " mass acceleration&.

Option A. 1st.Option B. $nd.

Option C. 3rd.Correct Answer is. $nd.Explanation. Newton;s =econd (aw < " ma.

Question Number. +4. -he period of simple pendulum is.

Option A. independent of its mass.Option B. lon)er for a heav pendulum bob.

Option C. lon)er on the earth than on the moon.Correct Answer is. independent of its mass.

Explanation. -he onl thin)s that affect the period of a pendulum is the len)th 8)reater len)th " lon)er period9 and )ravit 8)reater)ravit" shorter period9.

Question Number. +. A satellite re6uires 1: Toules to rotate half a revolution# which ta,es 3: seconds. %hat is the ener)

re6uired for one da&.Option A. 1+#+:: T.

Option B. 1#$:: T.

Option C. $#:: T.Correct Answer is. $#:: T.

Explanation. 1: Toules $revs0min 2: mins $+ hours.

Question Number. +5. -he siRe of Centripetal <orce on an ob?ect travellin) in a circle.

Option A. increase with increasin) mass of the ob?ect.

Option B. decreases with increasin) speed of the ob?ect.Option C. increases with an increasin) radius of circle.



Correct Answer is. increase with increasin) mass of the ob?ect.Explanation. N'(.

Question Number. :. <or an ob?ect in circular motion at constant velocit# if the radius of its path is doubled the centripetalforce will.Option A. double.

Option B. remain the same.Option C. half.

Correct Answer is. half.

Explanation. N'(.

Question Number. 1. An aircraft wei)hin) 2+:: pounds lands at a speed of 1: ft0=ec and stops in 1: =econds. %hat force was

)enerated b the bra,es 8assumin) )ravit as 3$ ft0sec9.Option A. !$::: (bs.

Option B. !$:: (bs.

Option C. !2+: (bs.Correct Answer is. !$:: (bs.

Explanation. N'(.

Question Number. $. <or ever action there is an e6ual and opposite reaction.; -his is ,nown as.Option A. Newtons second law.

Option B. Newtons third law.Option C. Newtons first law.

Correct Answer is. Newtons third law.Explanation. N'(.

Question Number. 3. One radian is e6ual to.



Option A. the an)le subtended at the centre of a circle when the arc!len)th formed between two radial lines is e6ual in len)th tothe radius.

Option B. 22.24 de)rees.Option C. the an)le subtended at the centre of a circle when the arc!len)th formed between two radial lines is e6ual to S.

Correct Answer is. the an)le subtended at the centre of a circle when the arc!len)th formed between two radial lines is e6ual inlen)th to the radius.Explanation. N'(.

Question Number. +. A wei)ht on a sprin) almost touches the floor 4 times over $1 seconds. %hat is its fre6uenc&.

Option A. 3 ccles0second.Option B. 103 ccles0second.

Option C. 4 ccles0second.Correct Answer is. 103 ccles0second.

Explanation. <re6uenc " number of oscillations divided b time " 40$1 " 103.

Question Number. . %hich of the followin) statements describes centrifu)al force&.Option A. E6ual to centripetal force and acts in the opposite direction.

Option B. Freater than centripetal force and acts in the opposite direction.Option C. =maller than centripetal force and acts in the opposite direction.

Correct Answer is. Freater than centripetal force and acts in the opposite direction.

Explanation. Centrifu)al is awa from centre and e6ual 8but opposite9 to centripetal force.

Question Number. 2. A bod startin) from rest accelerates at the rate of $: metres per second s6uared. %hat is the distance

covered until the bod reaches a velocit of : metres per second&.Option A. :.2$ ,ilometres.

Option B. : metres.

Option C. 2$. metres.Correct Answer is. 2$. metres.



Explanation. N'(.

Question Number. 4. -he oscillation produced b a pendulum $::mm lon) has a periodic time of.

Option A. 3:: milliseconds.Option B. 3 seconds.Option C. 1.$ seconds.

Correct Answer is. 3 seconds.Explanation. T = 2xπ√L/g = √2.5/10 = 6 * √0.25 = 6 * 0.5 = 3.

Question Number. . A drive shaft has a speed 1:S radians a second. %hat is the speed in J7&.

Option A. +::.Option B. 5:::.

Option C. 1::.Correct Answer is. +::.Explanation. 1:S 2:0$S " +::.

2.3a. Mechanics – Dynamics.

Question Number. 1. As an ob?ect slides down a slope# its.

Option A. ,inetic ener) increases and its potential ener) increases.Option B. ,inetic ener) increases and its potential ener) decreases.

Option C. ,inetic ener) decreases and its potential ener) increases.Correct Answer is. ,inetic ener) increases and its potential ener) decreases.

Explanation. otential ener) is converted into ,inetic ener).

Question Number. $. A sin)le fixed pulle 8discountin) friction etc9 has a mechanical advanta)e of.Option A. $.



Option B. 10$.Option C. 1.

Correct Answer is. 1.Explanation. N'(.

Question Number. 3. %hat is the ratio of load to effort called&.

Option A. 7echanical advanta)e.Option B. elocit ratio.

Option C. 7echanical ratio.

Correct Answer is. 7echanical advanta)e.Explanation. N'(.

Question Number. +. 1 ,% is.Option A. 3+13 B-L per hour.

Option B. 1.2 *.

Option C. 32: Toules.Correct Answer is. 3+13 B-L per hour.

Explanation. 1 B-L " :.$53 %. 1 % " 10:.$53 B-L " 3.+13 B-L. 1 ,% " 3+13 B-L.

Question Number. . -he tension in the cable of a crane is $:: N and it lifts a load throu)h :m# what is the wor, done onthe load&.

Option A. 1.$ 1: T.Option B. :: T.

Option C. 1$. ,T.Correct Answer is. 1.$ 1: T.

Explanation. N'(.



Question Number. 2. %hat is the ,inetic ener) of an aircraft of mass of $ metric tonnes and has a velocit of $m0s&.Option A. ,T.

Option B. + ,T.Option C. $ ,T.

Correct Answer is. + ,T.Explanation. Hinetic ener) " 10$m. Onl the is s6uared. $ metric tonnes " $::: ,).

Question Number. 4. -he wor, done in liftin) a mass of $::: ,) verticall to a hei)ht of +: metres is.

Option A. : ,T.

Option B. 4+. ,T.Option C. :: ,T.

Correct Answer is. 4+. ,T.Explanation. %or, done " <orce distance 8force " mass )ravit9. %d " $::: 1: +: " ::#::: approx. 8answer is sli)htl less

because ) " 5.1# not 1:9.

Question Number. . 'f a machine has a mechanical advanta)e of 1: and a velocit ratio of $:. -he efficienc of the machineis.

Option A. $::.Option B. :..

Option C. $.

Correct Answer is. :..Explanation. 1: times the force out and onl 10$:th speed# it must have an efficienc of a 10$. 81:: efficient it would have 1: times

the force and 101:th the speed ! strai)ht trade of force for speed9.

Question Number. 5. 1 %att ".

Option A. 1,)0h.

Option B. 1 Toule0s.Option C. 1 *.



Correct Answer is. 1 Toule0s.Explanation. 1 %att " 1 Toule0second.

Question Number. 1:. *ow would ou wor, out the wor, done b a machine assumin) it is 1:: efficient&.Option A. 'nput and output.Option B. 7echanical advanta)e and output.

Option C. 7echanical advanta)e and input.Correct Answer is. 7echanical advanta)e and input.

Explanation. Assumin) the ;input; means input force# to calculate the wor, done ou will need the input force and the mechanical

advanta)e of the machine to calculate the output force and distance 8%or, done " force distance of output9.

Question Number. 11. ')norin) friction# if ou let an ob?ect slide down a slope# at the bottom.

Option A. the potential ener) is e6ual to the ,inetic ener).Option B. the potential ener) is more than the ,inetic ener).

Option C. the ,inetic ener) is more than the potential ener).

Correct Answer is. the ,inetic ener) is more than the potential ener).Explanation. All potential ener) is converted to ,inetic ener).

Question Number. 1$. 1 * " 33::: ft.lbs0min or :: ft.lbs0s or.

Option A. 432 %atts.Option B. 4+2 %atts.

Option C. 132: %atts.Correct Answer is. 4+2 %atts.

Explanation. 1 * " 4+2 %atts.

Question Number. 13. A force of 1N is needed to move a bod of mass 3:,) alon) a footpath with uniform velocit. <ind thecoefficient of dnamic friction.8ta,e ) as 1:m0s0s9.



Option A. 10$:.Option B. 10$.

Option C. $:.Correct Answer is. 10$:.

Explanation. N'(.

Question Number. 1+. A mass of +::,) moves $4 metres with a force of +N. %hat is the wor, produced&.Option A. 1:.1,T.

Option B. 3.$,T.

Option C. 1+T.Correct Answer is. 1+T.

Explanation. N'(.

Question Number. 1. -he =' unit of ower is the.

Option A. olt.

Option B. ascal.Option C. %att.

Correct Answer is. %att.Explanation. N'(.

Question Number. 12. %hat is 1 ?oule in calories&.

Option A. +.12.Option B. $$.

Option C. :.$35.Correct Answer is. :.$35.

Explanation. N'(.



Question Number. 14. 'f ou push an ob?ect with a force of N for 1: m in + seconds# how much power is used&.Option A. 1$. watts.

Option B. watts.Option C. $:: %atts.

Correct Answer is. 1$. watts.Explanation. N'(.

Question Number. 1. %hat is the Hinetic Ener) of a $ ,) ob?ect movin) at a velocit of 1$ m0s&.

Option A. $+ Toules.

Option B. $ Toules.Option C. 1++ Toules.

Correct Answer is. 1++ Toules.Explanation. N'(.

Question Number. 15. A mass of 3,) wei)hs approximatel.

Option A. :.24 N.Option B. 2.2 (B.

Option C. 1.3 (B.Correct Answer is. 2.2 (B.

Explanation. 1 ,) " $.$ lb. =o 3 ,) " 3 $.$ " 2.2 lb.

Question Number. $:. ower is the rate of doin) wor,. 't is measured in.Option A. %atts0=econds.

Option B. Toules0=econds.Option C. Toules =econds.

Correct Answer is. Toules0=econds.

Explanation. N'(.



Question Number. $1. A 2::: ,) en)ine is lifted off a win) to a hei)ht :. metres and then pushed across the han)ar $+ meters.

-he force re6uired to push the trolle is 1$ ,N. %hat is the wor, done to move the trolle&.Option A. $5,T.

Option B. +7T.Option C. $,T.Correct Answer is. $,T.

Explanation. N'(.

Question Number. $$. A ball is dropped from rest. %hat is its speed after + seconds& 8-a,e ) as 1:m0s0s9.Option A. :m0s.

Option B. +:m0s.Option C. $:m0s.

Correct Answer is. +:m0s.Explanation. N'(.

Question Number. $3. 1 H% is e6ual to.

Option A. 1.3+ *.Option B. 1::: Toules.

Option C. $$ B-L.

Correct Answer is. 1.3+ *.Explanation. N'(.

Question Number. $+. -en ,ilo)rams is expressed numericall as.Option A. 1 7).

Option B. 1: H.

Option C. 1: ,).Correct Answer is. 1: ,).



Explanation. 1: ,ilo)rams " 1: ,).

Question Number. $. An ob?ect acceleratin) down a slope would )ain ,inetic ener).

Option A. less than the potential ener) lost.Option B. )reater than the potential ener) lost.Option C. e6ual to the potential ener) lost.

Correct Answer is. e6ual to the potential ener) lost.Explanation. N'(.

Question Number. $2. A bloc, slides down a slope. Assumin) there is no friction.

Option A. ,inetic ener) is )ained at the same rate as potential ener) is lost.Option B. ,inetic ener) is )ained at a )reater rate than potential ener) is lost.

Option C. potential ener) is )ained at a )reater rate than ,inetic ener) is lost.Correct Answer is. ,inetic ener) is )ained at the same rate as potential ener) is lost.

Explanation. HE )ained " E lost 8at the same rate9.

Question Number. $4. -he En)lish unit of mass is.Option A. the Newton.

Option B. the ,ilo)ram.

Option C. the slu).Correct Answer is. the slu).

Explanation. -he British unit of mass is the =lu).

Question Number. $. -he =' unit of ener) is the.

Option A. %att 8%9.

Option B. ascal 8a9.Option C. Toule 8T9.



Correct Answer is. Toule 8T9.Explanation. N'(.

Question Number. $5. A +. ,% electric motor is 5: efficient. *ow much ener) does it use in $: seconds&.Option A. 5: ,T.Option B. $.$ ,T.

Option C. 1:: ,T.Correct Answer is. 1:: ,T.

Explanation. N'(.

Question Number. 3:. A pile driver of mass 1::: ,)# hits a post 3 m below it. 't moves the post 1: mm. Assumin) )ravit " 1:m0s# what is the ,inetic ener) of the pile driver&.

Option A. 3: ,T.Option B. + ,T.

Option C. 5: ,T.

Correct Answer is. 3: ,T.Explanation. N'(.

Question Number. 31. -he =' unit for wor, is the.

Option A. Toule.Option B. %att.

Option C. horsepower.Correct Answer is. Toule.

Explanation. N'(.

Question Number. 3$. %hat wor, is done if a force of 1:: N moves a bod 1 metres&.Option A. 1:: ,T.



Option B. 1. ,T.Option C. :.1 mT.

Correct Answer is. 1. ,T.Explanation. %or, " force distance 1::N 1m " 1::T# or 1.,T.

Question Number. 33. ower is the rate of doin) wor,. 't is measured in.

Option A. Toules =econds.Option B. Toules0=econds.

Option C. %atts0=econds.

Correct Answer is. Toules0=econds.Explanation. ower " ener) per second " Toules0second.

Question Number. 3+. A bloc, slides down a slope. Assumin) there is no friction.Option A. potential ener) is )ained at a )reater rate than ,inetic ener) is lost.

Option B. ,inetic ener) is )ained at the same rate as potential ener) is lost.

Option C. ,inetic ener) is )ained at a )reater rate than potential ener) is lost.Correct Answer is. ,inetic ener) is )ained at the same rate as potential ener) is lost.

Explanation. HE )ained " E lost 8at the same rate9.

2.3b. Mechanics – Dynamics.

Question Number. 1. A )ood refri)erant has a.Option A. low condensation temperature and hi)h condensation pressure.

Option B. low condensation temperature and low condensation pressure.Option C. hi)h condensation temperature and low condensation pressure.

Correct Answer is. hi)h condensation temperature and low condensation pressure.

Explanation. N'(.



Question Number. $. %hat is the momentum of a ball of mass $ )rams and has a velocit of 1:cm0s&.

Option A. ,).m0s.Option B. $: ,).m0s.

Option C. :.:::$ ,).m0s.Correct Answer is. :.:::$ ,).m0s.Explanation. 7omentum " mass velocit. But first convert the numbers to ='. 8$ )rammes " $01::: ,). 1:cm " 1:01::: 7etres9.

Question Number. 3. A )roscope suffers from apparent wander. -his is due to.

Option A. friction on the )imbals and bearin)s.Option B. the earth;s rotation.

Option C. the aircraft flin) alon) a north0south trac,.Correct Answer is. the earth;s rotation.

Explanation. Jeal wander is phsical movement from friction in bearin)s. Apparent wander is due to effect of earth;s rotation.

Question Number. +. -he =' unit of momentum is the.Option A. metre s6uared 8m$9.

Option B. ,ilo)ram metre per second.Option C. ,ilo)ram 0 metre 8,)0m9.

Correct Answer is. ,ilo)ram metre per second.

Explanation. 7omentum " mass velocit. =o units are ,) m0s.

Question Number. . recession in a )ro is.

Option A. proportional to the ma)nitude of the tor6ue applied.Option B. proportional to the s6uare of the ma)nitude of the tor6ue applied.

Option C. inversel proportional to the ma)nitude of the tor6ues applied.

Correct Answer is. proportional to the ma)nitude of the tor6ue applied.Explanation. N'(.



Question Number. 2. A )ro with a fixed point free to rotate in three axis is.Option A. a tied )ro.

Option B. a space )ro.Option C. an earth )ro.Correct Answer is. a tied )ro.

Explanation. 'f the )ro is fixed to one point# it is a tied )ro. 8An earth )ro is ;tied; specificall to an earth reference point9.

Question Number. 4. %hat tpe of friction re6uires the )reatest force to overcome it&.Option A. namic friction.

Option B. =tatic friction.Option C. Jollin) friction.

Correct Answer is. =tatic friction.Explanation. =tatic friction 8sometimes called ;stiction;9 is the )reatest friction. <ollowed b namic and Jollin) respectivel.

Question Number. . 'f a )ro is constrained to an external reference and has three de)rees of freedom it is.

Option A. a tied )ro.Option B. an earth )ro.

Option C. a space )ro.

Correct Answer is. a tied )ro.Explanation. A tied )ro has one axis fixed to a point 8in space or on earth9. An earth )ro is a tied )ro but with one axis

specificall fixed to a reference on earth.

Question Number. 5. -he point at which an applied force overcomes friction and an ob?ect be)ins to move is the co!efficient

of.

Option A. limitin) friction.Option B. static friction.



Option C. ,inetic friction.Correct Answer is. limitin) friction.

Explanation. N'(.

Question Number. 1:. -he amount a )ro precesses when a tor6ue is applied is.Option A. proportional to the tor6ue.

Option B. inversel proportional to the tor6ue.Option C. proportional to the s6uare of the tor6ue.

Correct Answer is. proportional to the tor6ue.

Explanation. N'(.

Question Number. 11. -he )roscopic principle is based upon.

Option A. Newtons 3rd (aw.Option B. Newtons $nd (aw.

Option C. Newtons 1st (aw.

Correct Answer is. Newtons 1st (aw.Explanation. Newton;s <irst (aw is also called the ;'nertia (aw;.

Question Number. 1$. A mass of $:,) produces a momentum of 3::,)m0s. %hat is the Hinetic ener)&.

Option A. 3$: Toules.Option B. $$: Toules.

Option C. :.$ Hilo?oules.Correct Answer is. $$: Toules.

Explanation. 7omentum " 7# 3:: " $:# " 1. HE " 10$7$ " 10$$:11 " $$:T.

Question Number. 13. A motorccle of mass +::,) is movin) at a velocit of m0s. Calculate its momentum.Option A. 3$:: ,)m0s.



Option B. : ,)m0s.Option C. 3$: ,)m0s.

Correct Answer is. 3$:: ,)m0s.Explanation. 7omentum " mass velocit.

Question Number. 1+. 'f the speed of a )ro is increased# the force re6uired to precess the )ro is.

Option A. increased.Option B. remains the same.

Option C. decreased.

Correct Answer is. increased.Explanation. Ji)idit increases with J7.

2.4a. Mechanics - Fluid Dynamics.

Question Number. 1. -he specific )ravit of a substance is calculated b.

Option A. densit of the bod s6uared multiplied b the densit of water.Option B. the densit of the bod divided b the densit of water.

Option C. densit of the bod multiplied b the densit of water.Correct Answer is. the densit of the bod divided b the densit of water.

Explanation. =pecific; alwas means ;per; somethin) or divide b.

Question Number. $. -he =' unit of densit is the.Option A. ,ilo)ram per cubic metre 8,)0m39.

Option B. ascal 8a9.Option C. cubic metre 8m39.

Correct Answer is. ,ilo)ram per cubic metre 8,)0m39.

Explanation. N'(.



Question Number. 3. Jelative densit is.

Option A. densit of water x densit of medium.Option B. densit of water0densit of medium.

Option C. densit of medium0densit of water.Correct Answer is. densit of medium0densit of water.Explanation. N'(.

Question Number. +. -he standard for measurin) densit is.

Option A. : IC and 42: mm of mercur.Option B. !$: IC and 4:: mm of mercur.

Option C. @$: IC and 42: mm of mercur.Correct Answer is. : IC and 42: mm of mercur.

Explanation. =-.

Question Number. . 1,) of water is heated from : IC to $ IC. 'ts volume will.Option A. decrease.

Option B. sta the same.Option C. increase.

Correct Answer is. decrease.

Explanation. %hen ice melts# its volume decreases up to 3 IC.

Question Number. 2. A pilot re6uests 5.$ tonnes of fuel. -he bowser driver reports to the pilot that the specific )ravit is :.#

what will the uplift be&.Option A. 432: litres.

Option B. 11:: litres.

Option C. 5$:: litres.Correct Answer is. 11:: litres.



Explanation. 1 litre of water has a mass of 1,). 1::: litres of water has a mass of 1 metric tonne. 5.$ tonnes of water is 5$:: litres.But fuel is li)hter than water 8:.x9 so the uplift will be more than 5$:: litres.

Question Number. 4. =pecific )ravit.Option A. is measured in ,)0m$.Option B. is measured in ,)0m3.

Option C. has no units.Correct Answer is. has no units.

Explanation. =pecific )ravit is the densit of the fluid divided b the densit of water. =ince both have the same units 8,)0m39 the

cancel ! hence# no units.

Question Number. . -he standard temperature and pressure for measurin) the densit of li6uids is.

Option A. 1 IC and 42: mm*).Option B. : IC and 42: mm*).

Option C. + IC and 42: mm*).

Correct Answer is. + IC and 42: mm*).Explanation. =ince water is most dense at + IC 81::: ,)0m39# this is used as the standard temperature. %hen wor,in) out specific

)ravit# the fluid in 6uestion must also be + IC. 8But remember it is : IC for )ases# and room temp ! $: IC ! for barometers9.

Question Number. 5. -he standard temperature and pressure for measurin) the volume of li6uids and solids is.Option A. $: IC and 4:: mm*).

Option B. $: IC and 42: mm*).Option C. : IC and 42: mm*).

Correct Answer is. $: IC and 42: mm*).Explanation. =ince the volume of solids and )ases chan)es with temperature 8and a lesser amount with pressure9 the standard for

measurin) volume is $: IC. 8room temp.9 and 42:mm*) 8standard sea level atmospheric pressure9.



Question Number. 1:. Fiven that 1 cubic foot of water wei)hs 2$.+ lbs and the specific )ravit of fuel is :.1# what is thewei)ht of 1: cubic foot of fuel&.

Option A. +:$. lbs.Option B. :.+ lbs.

Option C. 44:.3 lbs.Correct Answer is. :.+ lbs.Explanation. 1: 2$.+ " 2$+. 2$+ :1 ".

Question Number. 11. At what temperature does water have the )reatest densit&.

Option A. : IC.Option B. 1:: IC.

Option C. + IC.Correct Answer is. + IC.

Explanation. =olidification be)ins at + IC when coolin).

Question Number. 1$. -he specific )ravit of methlated spirit is :.. 'ts densit is.Option A. :: )0m3.

Option B. :: ,)0m3.Option C. : ,)0m3.

Correct Answer is. :: ,)0m3.

Explanation. s) " densit of fluid0densit of water densit of fluid " s) densit of water densit of water " 1::: ,)0m3.

Question Number. 13. -he densit of Cu is #5::,)0m3. %hat is its relative densit&.

Option A. 5:.Option B. .5.

Option C. 5.

Correct Answer is. .5.Explanation. rel. densit " densit of substance0densit of water" 5::01:::.



2.4b. Mechanics - Fluid Dynamics.

Question Number. 1. Atmospheric pressure at '=A conditions is.Option A. 1:13 pa.

Option B. 1:13 bar.Option C. 1:13 mBar.Correct Answer is. 1:13 mBar.

Explanation. N'(.

Question Number. $. Convert $$: )allons to litres.Option A. 1::: litres.

Option B. +.+ litres.Option C. :: litres.

Correct Answer is. 1::: litres.Explanation. 'ma)ine how man times a lar)e co,e bottle )oes into a normal en)ine oil container 8about + 8and a bit99# then $$:.

http/00www.metric!conversions.or)0

Question Number. 3. -he =' unit of pressure is the.Option A. Newton per metre s6uared 8N0m$9.

Option B. Cubic metre 8m39.

Option C. ,ilo)ram per metre cubed 8,)0m39.Correct Answer is. Newton per metre s6uared 8N0m$9.

Explanation. ressure " force 0 area. =o units of pressure is Newtons 0 s6uare metre 8or better ,nown as ascals9.

Question Number. +. A )au)e indicates 1 ='F. %hat is the absolute pressure&.

Option A. 3: ='.

Option B. :.3 ='.Option C. >ero ='.



Correct Answer is. 3: ='.Explanation. Absolute pressure " )au)e pressure @ atmospheric pressure. 8-he F in ='F means ;)au)e;9 Atmospheric pressure

varies sli)htl so is not alwas the 1+.4 =' of the '=A. http/00en.wi,ipedia.or)0wi,i0ound!forcepers6uareinch

Question Number. . %ater is most dense at.Option A. !+ IC.

Option B. : IC.Option C. @+ IC.

Correct Answer is. @+ IC.

Explanation. As water cools# the molecules be)in to crstallise at + IC. CrstalliRed water 8i.e. ice9 has a )reater volume than li6uidwater and therefore less densit 8that is wh ice floats9. http/00www.phsical)eo)raph.net0fundamentals0a.html

Question Number. 2. iscosit can be described as.Option A. Newton;s 1st law of motion.

Option B. fluids flowin) in a strai)ht line.

Option C. the internal resistance for a fluid to flow.Correct Answer is. the internal resistance for a fluid to flow.

Explanation. iscosit is opposition to flow of a fluid.

Question Number. 4. *ow much lift is produced on a win) can be derived from.Option A. Bernoulli;s -heorem.

Option B. <arada;s law.Option C. Charles law.

Correct Answer is. Bernoulli;s -heorem.Explanation. Bernoulli;s theorem.

Question Number. . ressure in a pipe is.



Option A. force per unit area.Option B. mass divided b cross!sectional area.

Option C. wei)ht per unit area.Correct Answer is. force per unit area.

Explanation. N'(.

3a. hermodynamics.

Question Number. 1. Convert $ de)rees centi)rade to fahrenheit.

Option A. 4.Option B. 44.

Option C. !4.Correct Answer is. 44.

Explanation. 8$1.9@3$" 44.

Question Number. $. Mou are at the north pole where the temperature is minus : IC below freeRin). %hat sort ofthermometer would ou use to measure it&.

Option A. %ater.Option B. Alcohol.

Option C. 7ercur.

Correct Answer is. Alcohol.Explanation. N'(.

Question Number. 3. Convert 1 IC to I<.Option A. 34 I<.

Option B. 5 I<.

Option C. 2$ I<.Correct Answer is. 5 I<.



Explanation. '=A sea level temperature 1 IC " 5 I<.

Question Number. +. 1 de)ree rise on the centi)rade scale will cause a.

Option A. 1. de)ree rise in <ahrenheit.Option B. 33 de)ree rise in <ahrenheit.Option C. :.511 de)ree rise in <ahrenheit.

Correct Answer is. 1. de)ree rise in <ahrenheit.Explanation. N'(.

Question Number. . 1 calorie is e6ual to.

Option A. + T.Option B. +: T.

Option C. +:: T.Correct Answer is. + T.

Explanation. N'(.

Question Number. 2. 1 B-L e6uals.Option A. 1: Toules.

Option B. 1: Calorie.

Option C. 1: ,T.Correct Answer is. 1: Toules.

Explanation. N'(.

Question Number. 4. -emperature is a measure of.

Option A. the amount of friction produced b two matin) surfaces.

Option B. the amount of vibration of molecules.Option C. the heat ener) of particles.



Correct Answer is. the amount of vibration of molecules.Explanation. *eat ener) applied to an ob?ect does not necessaril increase temperature 8e). when meltin) or evaporatin)9.

Question Number. . %hat temperature scale is used with the combined )as law&.Option A. Absolute.Option B. <ahrenheit.

Option C. Celsius.Correct Answer is. Absolute.

Explanation. Helvin 8absolute scale9 is alwas used with the combined )as law e6uation.UV.

Question Number. 5. %hat is 1 btu0lb in ?oules per ,ilo)ram&.Option A. $3$2 ?0,).

Option B. +1$ ?0,).Option C. 5.1 ?0,).

Correct Answer is. $3$2 ?0,).

Explanation. -his is referrin) to specific ener) content 8T0,) or Btu0lb9 of fuel. 1 btu " 1: T. 1 lb " $.$ ,). -herefore 1 btu " $3$2T0,).

Question Number. 1:. 1 C*L " Centi)rade *eat Lnit " 1+:: ft lbs "ener) to raise.

Option A. 1 lb of water b 1 I<.Option B. 1 ,) of water b 1 IC.

Option C. 1 lb of water b 1 IC.Correct Answer is. 1 lb of water b 1 IC.

Explanation. 1 C*L is the heat re6uired to raise 1 lb of water 1 de)ree Centi)rade 8"1. B-L9.

Question Number. 11. 1 B-L " 44 ft lbs which is the ener) re6uired to raise the temperature of.Option A. 1 lb of water b 1 I<.



Option B. 1 ,) of water b 1 I<.Option C. 1 lb of water b 1 IC.

Correct Answer is. 1 lb of water b 1 I<.Explanation. 1 B-L is the heat re6uired to raise 1 lb of water 1 de)ree <ahrenheit.

Question Number. 1$. A temperature of +1 de)rees <ahrenheit is# in Centi)rade.

Option A. 5 de)rees.Option B. de)rees.

Option C. 4 de)rees.

Correct Answer is. de)rees.Explanation. C " 058<!3$9.

Question Number. 13. *eat is described as.Option A. a hi)h temperature.

Option B. ener) in transit.

Option C. the stored ener) in a hot bod.Correct Answer is. ener) in transit.

Explanation. *eat is a tpe of transfer of ener) which increases the ,inetic ener) of the molecules within a bod.

Question Number. 1+. 2::H is e6ual to.Option A. 3 IC.

Option B. 43 IC.Option C. 3$2. IC.

Correct Answer is. 3$2. IC.Explanation. =ubtract $43.1.

Question Number. 1. %hen )ases chan)e temperature0pressure# the scale used is.



Option A. Helvin.Option B. de)rees <ahrenheit.

Option C. de)rees Centi)rade.Correct Answer is. Helvin.

Explanation. Alwas use the Helvin scale in thermodnamics.

Question Number. 12. Convert 1:: IC to Helvin.Option A. 143 H.

Option B. 343 H.

Option C. $43 H.Correct Answer is. 343 H.

Explanation. e)rees C to Helvin ! ?ust add $43.

Question Number. 14. !+: IC in <ahrenheit is.

Option A. 4$ I<.

Option B. I<.Option C. !+: I<.

Correct Answer is. !+: I<.Explanation. I< " 1. IC @ 3$ 1.8!+:9 @ 3$ " !+: I<. lease do not report this as an error.

Question Number. 1. Absolute Rero is.

Option A. : IC.Option B. $43.1 H.

Option C. !$43.1 IC.Correct Answer is. !$43.1 IC.

Explanation. Absolute Rero is ! $43.1 de)rees Celsius.



Question Number. 15. One de)ree increment on the Centi)rade scale is e6ual to what increment on the <ahrenheit scale&.

Option A. 1. I<.Option B. 33 I<.

Option C. 1$ I<.Correct Answer is. 1. I<.Explanation. A chan)e of; 1 de)ree C. it is e6ual to ;a chan)e of; 1. de)ree <.

Question Number. $:. -ransfer of heat from a hot area to a cold area is.

Option A. conduction.Option B. convection.

Option C. radiation.Correct Answer is. conduction.

Explanation. Convection is a transfer of ;matter; from one place to another. Jadiation is a sstem which heats up anthin) in its path. but heat is not ;transferred;.

Question Number. $1. <ahrenheit ma be converted to Celsius b usin) the e6uation.

Option A. IC " 05 8 I< ! 3$9.Option B. IC " 05 I< ! 3$.

Option C. IC " 50 I< @ 3$.

Correct Answer is. IC " 05 8 I< ! 3$9.Explanation. IC " 058 I<!3$9. I< " 50 I< @ 3$.

Question Number. $$. %hat is 1 B-L0lb in ?oules per ,ilo)ram&.Option A. +1$ ?oules per ,ilo)ram.

Option B. 5.1 ?oules per ,ilo)ram.

Option C. $3$2 ?oules per ,ilo)ram.Correct Answer is. $3$2 ?oules per ,ilo)ram.



Explanation. 1 B-L0lb " $3$2 ?0,). -his is referrin) to heat of combustion of fuel.

Question Number. $3. Celsius to <ahrenheit is calculated b.

Option A. 850 IC9 @ 3$.Option B. 805 IC9 @ 3$.Option C. 805 @ 3$9 @ IC.

Correct Answer is. 850 IC9 @ 3$.Explanation. Jemember standard sea level temperature is 1 IC and 5<. 7a,e IC " 1 on each formula above# and see which

comes out at 5 I<U.

Question Number. $+. -he percenta)e of nitro)en in air is approximatel.Option A. :.2$.

Option B. :.$1.Option C. :.4.

Correct Answer is. :.4.

Explanation. N'(.

Question Number. $. %hen a sstem under)oes a complete ccle where the net heat supplied is e6ual to wor, done plus a

chan)e in internal ener) ! this is ,nown as.

Option A. $nd (aw of thermodnamics.Option B. <irst law of thermodnamics.

Option C. 'deal Fas law.Correct Answer is. <irst law of thermodnamics.

Explanation. N'(.

Question Number. $2. 'n a heat pump.Option A. the evaporator )ains heat durin) the heatin) ccle.



Option B. the condenser alwas loses heat.Option C. the pump operates in both directions.

Correct Answer is. the pump operates in both directions.Explanation. N'(.

Question Number. $4. %hat is !$ IC on the Helvin scale&.

Option A. $+ H.Option B. 1 H.

Option C. $51 H.

Correct Answer is. $+ H.Explanation. !$ @ $43 " $+.

Question Number. $. %hen water freeRes# heat ener) is.Option A. absorbed.

Option B. retained.

Option C. released.Correct Answer is. released.

Explanation. <reeRin) is ;exothermic;.

Question Number. $5. +$ de)rees <ahrenheit is e6ual to.Option A. +: e)rees Celsius.

Option B. +:: e)rees Celsius.Option C. $3$.$ de)rees Celsius.

Correct Answer is. +: e)rees Celsius.Explanation. C " 058< ! 3$9.

Question Number. 3:. <or a fixed mass of water at sea level '=A conditions and at 1:#:::ft.



Option A. the water will boil at a lower temperature than sea level.Option B. the water will boil at the same temperature as sea level.

Option C. the water will boil at a hi)her temperature than sea level.Correct Answer is. the water will boil at a lower temperature than sea level.

Explanation. As pressure drops# so does the boilin) temperature.

Question Number. 31. ew point is.Option A. the temperature at which condensation actuall occurs.

Option B. the temperature below which condensation occurs.

Option C. the temperature above which condensation occurs.Correct Answer is. the temperature below which condensation occurs.

Explanation. N'(.

Question Number. 3$. B addin) impurities to water.

Option A. the meltin) point will increase and the boilin) point decrease.

Option B. there will be no effect to the meltin) and boilin) points.Option C. the meltin) point will decrease and the boilin) point will increase.

Correct Answer is. the meltin) point will decrease and the boilin) point will increase.Explanation. N'(.

Question Number. 33. %hich tpe of circuit is used when the temperature of the source has insufficient heat for thermocouple

application&.Option A. thermistor.

Option B. temperature bulb.Option C. balanced brid)e.

Correct Answer is. thermistor.

Explanation. N'(.



Question Number. 3+. <our pounds of )as at a temperature of 14 IC is heated to 5 IC. -he specific heat at constant pressure

and constant volume are :.$+:+ and :.141 respectivel. <ind the heat absorbed b the )as at constant pressure and at constantvolume.

Option A. 4:.1 C.*.L. and : C.*.L.Option B. +5. C.*.L. and 25 C.*.L.Option C. 25.$ C.*.L. and +5. C.*.L.

Correct Answer is. 25.$ C.*.L. and +5. C.*.L.Explanation. Q " mC8-$ !-19# + :.$+:+ 4$ " 25.$ C*L# and + :.141 4$ " +5. C*L.

Question Number. 3. 'n ;standard conditions; what is the standard for measurement of volume and densit of a )as&.

Option A. : IC and 42:mm of 7ercur.Option B. $: IC and 4::mm of 7ercur.

Option C. $: IC and 42:mm of 7ercur.Correct Answer is. : IC and 42:mm of 7ercur.

Explanation. =- also applies to solids and li6uids.

Question Number. 32. 'n ;standard conditions; what is the standard for measurement of volume and densit of a li6uid or solid&.

Option A. $: IC and 42:mm of 7ercur.

Option B. : IC and 42:mm of 7ercur.Option C. $: IC and 4::mm of 7ercur.

Correct Answer is. : IC and 42:mm of 7ercur.Explanation. N'(.

Question Number. 34. +$ e)rees <ahrenheit is e6ual to.

Option A. +: e)rees Celsius.Option B. $3$.$ e)rees Celsius.



Option C. +:: e)rees Celsius.Correct Answer is. +: e)rees Celsius.

Explanation. N'(.

Question Number. 3. %hich of the followin) $ points are e6ual&.Option A. !3$ IC and : I<.

Option B. +: IC and +: I<.Option C. !+: IC and !+: I<.

Correct Answer is. !+: IC and !+: I<.

Explanation. N'(.

Question Number. 35. %hat is 1:: e)rees Centi)rade in <ahrenheit&.

Option A. 3: e)rees.Option B. 1+ e)rees.

Option C. $1$ e)rees.

Correct Answer is. $1$ e)rees.Explanation. N'(.

Question Number. +:. -he absolute temperature scale that has the same increments as the <ahrenheit scale is the.

Option A. Jan,in scale.Option B. Helvin scale.

Option C. Celsius scale.Correct Answer is. Jan,in scale.

Explanation. N'(.

Question Number. +1. -he absolute temperature scale that has the same increments as the Celsius scale is the.Option A. Jan,in scale.



Option B. Helvin scale.Option C. <ahrenheit scale.

Correct Answer is. Helvin scale.Explanation. N'(.

3b. hermodynamics.

Question Number. 1. <or a heat pump to internall heat it uses a.

Option A. inside evaporator.

Option B. inside condenser.Option C. outside condenser.

Correct Answer is. inside condenser.Explanation. N'(. http/00en.wi,ipedia.or)0wi,i0*eatpump

Question Number. $. -he heat re6uired to chan)e a li6uid to a )as is called the heat of.

Option A. condensation.Option B. fusion.

Option C. vapourisation.Correct Answer is. vapourisation.

Explanation. (i6uid to )as is vapourisation. =olid to li6uid is fusion 8another term for meltin) ! li,e fusion weldin)9.

Question Number. 3. %hat is the =' units for specific heat capacit&.Option A. T,)!1,!1.

Option B. T0=0C.Option C. T0 ,).

Correct Answer is. T,)!1,!1.

Explanation. N'(.



Question Number. +. -he most common refri)erants are.

Option A. water# ammonia# freon.Option B. water# freon# carbon dioxide.

Option C. ammonia# freon# methl bromide.Correct Answer is. water# ammonia# freon.Explanation. All are refri)erants ! water is used in coolin) towers. 7ethl bromide is almost completel phased out due to safet and

environmental reasons. Carbon dioxide has been used but no more due to availabilit of better refri)erants such as ammonia.

Question Number. . *ow is heat transferred in a vacuum&.Option A. Convection.

Option B. Conduction.Option C. Jadiation.

Correct Answer is. Jadiation.Explanation. N'(.

Question Number. 2. -he specific heat capacit of a )as heated at constant pressure# when compared to the specific heat

capacit of a )as heated at constant volume# is.Option A. more.

Option B. less.

Option C. the same.Correct Answer is. more.

Explanation. Cp is sli)htl hi)her than Cv. Lsuall it onl applies to )ases. <or example the Cp for air is 1.+ times more than its Cv.

Question Number. 4. Adiabatic compression is when.

Option A. no heat is lost or )ained.

Option B. ,inetic ener) is )ained.Option C. heat is )iven off to the surroundin)s.



Correct Answer is. no heat is lost or )ained.Explanation. N'(.

Question Number. . -he heat re6uired to chan)e a solid to a li6uid is called the heat of.Option A. vapourisation.Option B. condensation.

Option C. fusion.Correct Answer is. fusion.

Explanation. Another word for meltin) is ;fusion; 8as in fusion weldin) ! or... ;a fuse;9.

Question Number. 5. (atent heat is the.Option A. heat re6uired to raise the temperature of a bod b 1 IC.

Option B. heat re6uired to raise 1,) of matter b 1H.Option C. heat re6uired to chan)e the state of a bod.

Correct Answer is. heat re6uired to chan)e the state of a bod.

Explanation. (atent; means ;hidden;. 't is the heat ener) re6uired to chan)e the state 8melt or vapourise9. No rise in temperature is pruduced whilst doin) so ! hence the ;hidden; bit.

Question Number. 1:. -he intensit of radiated heat is.

Option A. inversel proportional to the s6uare of the distance from the source of the heat.Option B. not effected b the distance from the source of the heat.

Option C. directl proportional to distance from the source of the heat.Correct Answer is. inversel proportional to the s6uare of the distance from the source of the heat.

Explanation. (i,e most such thin)s# intensit of heat# )ravit# ma)netism etc. ! the all reduce with the s6uare of the distance 8i.e.double the distance and the intensit is 10+9.

Question Number. 11. As a bloc, of ice is melted 8to + IC9. 'ts volume.



Option A. remains the same.Option B. decreases.

Option C. increases.Correct Answer is. decreases.

Explanation. 'ce expands as it )ets colder ! which is wh water pipes burst if the freeRe.

Question Number. 1$. A )ood refri)erant has.Option A. hi)h condensin) pressure# low evaporatin) temperature.

Option B. hi)h condensin) pressure# hi)h evaporatin) temperature.

Option C. low condensin) pressure# low vaporatin) temperature.Correct Answer is. low condensin) pressure# low vaporatin) temperature.

Explanation. -he refri)erant must evaporate at lower temperature than the ;cold space; and must condense at a relativel hi)htemperature# with a low compression level.

Question Number. 13. 'n a heat pump.

Option A. 'n a heat pump.Option B. the condenser loses heat.

Option C. flow across the condenser is alwas in one direction.Correct Answer is. the condenser loses heat.

Explanation. *eat pumps can be used to cool as well as heat. Jefri)erant flow chan)es direction respectivel# but the condensor

alwas re?ects the heat.

Question Number. 1+. Charles; (aw states that.

Option A. volume varies inversel with temperature.Option B. volume varies directl with temperature.

Option C. volume e6uals pressure temperature.

Correct Answer is. volume varies directl with temperature.Explanation. N'(. http/00en.wi,ipedia.or)0wi,i0Charleslaw



Question Number. 1. Bole;s law states that.Option A. pressure e6uals temperature divided b volume.

Option B. pressure varies directl with volume.Option C. pressure varies inversel with volume.Correct Answer is. pressure varies inversel with volume.

Explanation. ressure rises# volume decreases.

Question Number. 12. Convection does not occur in.Option A. li6uids.

Option B. li6uids.Option C. solids.

Correct Answer is. solids.Explanation. -he medium must ;flow; for conduction to ta,e place.

Question Number. 14. A process where volume does not chan)e is.

Option A. isochoric.Option B. isobaric.

Option C. isothermic.

Correct Answer is. isochoric.Explanation. N'(.

Question Number. 1. A process where heat is not transferred to or from a )as is.Option A. adiabatic.

Option B. isochoric.

Option C. isobaric.Correct Answer is. adiabatic.



Explanation. N'(.

Question Number. 15. A process where pressure does not chan)e is ,nown as.

Option A. isochoric.Option B. isothermic.Option C. isobaric.

Correct Answer is. isobaric.Explanation. 'so; means e6ual. ;bar; is pressure.

Question Number. $:. %hen a li6uid is heated# it expands.

Option A. more than a solid.Option B. less than a solid.

Option C. more than a )as.Correct Answer is. more than a solid.

Explanation. Fenerall spea,in)# li6uids have a )reater coefficient of thermal expansion than solids.

Question Number. $1. 'f pressure on a li6uid increases# whilst temperature is held constant# the volume will.Option A. decrease.

Option B. remain constant.

Option C. increase.Correct Answer is. remain constant.

Explanation. (i6uids are incompressible.

Question Number. $$. A process where temperature remains the same is ,nown as.

Option A. isobaric.

Option B. isochoric.Option C. isothermic.



Correct Answer is. isothermic.Explanation. 'so; means e6ual. ;-hermal; is temperature.

v

Question Number. $3. %hat is descriptive of Bole;s (aw& 8"ressure# "olume# -"-emperature9.Option A. is proportional to 10-.Option B. is proportional to 10.

Option C. is proportional to -.Correct Answer is. is proportional to 10.

Explanation. ressure 89 is inversel proportional to volume 89.

Question Number. $+. A compressor increases.Option A. ,inetic ener).

Option B. potential ener).Option C. movin) ener).

Correct Answer is. potential ener).

Explanation. Compressed air is a form of ;potential ener);.

Question Number. $. 1 1 0 -1 " $ $ 0 -$ is 8"ressure# "olume# -"-emperature9.

Option A. 'deal )as law.

Option B. Charles; law.Option C. Bole;s law.

Correct Answer is. 'deal )as law.Explanation. N'(.

Question Number. $2. 1 0 -1 " $ 0 -$ at a constant pressure is 8"ressure# "olume# -"-emperature9.

Option A. ideal )as law.Option B. Bole;s law.



Option C. Charles; law.Correct Answer is. Charles; law.

Explanation. N'(.

Question Number. $4. 1 1 " $ $ at a constant temperature is 8"ressure# "olume# -"-emperature9.Option A. Bole;s law.

Option B. ideal )as law.Option C. Charles; law.

Correct Answer is. Bole;s law.

Explanation. N'(.

Question Number. $. -he atmosphere;s temperature chan)es at a rate of !1.5 IC per 1::: ft up to 32#::: ft where it remains

constant at.Option A. !2 I<.

Option B. !$ IC.

Option C. !2 IC.Correct Answer is. !2 IC.

Explanation. -he troposphere is a constant !2 de)rees C.

Question Number. $5. A process where heat is )iven off to its surroundin)s is called.Option A. isothermal.

Option B. adiabatic.Option C. isobaric.

Correct Answer is. isothermal.Explanation. Adiabatic; is a process where NO heat is )iven off to its surroundin)s. 'sobaric is constant pressure. 'sothermal# to ,eep

constant temperature must )ive off heat as it is compressed.



Question Number. 3:. A bod which is allowed to expand when heated# expands past the pressure imposed on it and.Option A. a force is produced.

Option B. nothin) will happen.Option C. wor, is done.

Correct Answer is. wor, is done.Explanation. %or, is done when it exerts a force and moves 8wor, " force x distance9. Mes# a force is produced but this is not thewhole stor.

Question Number. 31. -he 6uantit of heat developed b burnin) 1 ,) of fuel is ,nown as.

Option A. radiant heat.Option B. latent heat.

Option C. heat of combustion.Correct Answer is. heat of combustion.

Explanation. -he ener) content of fuel is ,nown as ;heat of combustion;.

Question Number. 3$. -he transfer of heat throu)h radiation is achieved b the application of radioactive isotopes.Option A. the application of radioactive isotopes.

Option B. warmin) up the intervenin) medium.Option C. not warmin) up the intervenin) medium.

Correct Answer is. warmin) up the intervenin) medium.

Explanation. N'(.

Question Number. 33. -he dew point is.

Option A. the point when air is cooled at which the moisture ?ust starts to condense.Option B. the point at which air can be heated.

Option C. the point when air is cooled at which the moisture does not condense.

Correct Answer is. the point when air is cooled at which the moisture ?ust starts to condense.Explanation. Chec, the definition of dew point.





Correct Answer is. sublimate.Explanation. A sublimate can )o directl from solid to )as.

Question Number. 3. -he composition of the atmosphere is approximatel.Option A. 10 ox)en and +0 nitro)en.Option B. +0 ox)en and 10 nitro)en.

Option C. $0 ox)en and 30 nitro)en.Correct Answer is. 10 ox)en and +0 nitro)en.

Explanation. Air is 4 8approx. +09 nitro)en and $1 8approx 109 ox)en.

Question Number. 35. %hat is meant b adiabatic&.Option A. All heat crosses the boundar.

Option B. No heat crosses the boundar.Option C. =ome heat crosses the boundar.

Correct Answer is. No heat crosses the boundar.

Explanation. No heat is lost or )ained in an adiabatic process.

Question Number. +:. 'f a )as is heated and its temperature is raised b 1H. %hat happens to its volume&.

Option A. ecreases b 10$43.

Option B. 'ncreases b 10$43.Option C. Jemains the same.

Correct Answer is. 'ncreases b 10$43.Explanation. Charles;s (aw. Also how the absolute Rero 8!$43 IC is calculated9.

Question Number. +1. 'f a bloc, of ice melts in a )lass of water# the level of water in the )lass will.

Option A. fall.Option B. rise.



Option C. remain the same.Correct Answer is. remain the same.

Explanation. N'(.

Question Number. +$. 'f heat is constant# and if pressure increases on a li6uid what will the volume do&.Option A. 'ncrease.

Option B. Jemains constant.Option C. ecrease.

Correct Answer is. Jemains constant.

Explanation. (i6uids are considered incompressible# therefore their volume remains constant.

Question Number. +3. Jadiant heat of a bod# heated from a radiant source is.

Option A. inversel proportional to the s6uare of the distance.Option B. proportional to distance.

Option C. inversel proportional.

Correct Answer is. inversel proportional to the s6uare of the distance.Explanation. -he wordin) of this 6uestion is terrible# but it is probabl referrin) to radiant heat bein) inversel proportional to the

s6uare of the distance from the source of the.

Question Number. ++. Combined )as law relates volume# pressure and.Option A. temperature.

Option B. densit.Option C. velocit.

Correct Answer is. temperature.Explanation. 110-1 " $$0-$ Combined 8or ideal9 )as law.

Question Number. +. -he heat )iven off b burnin) a 1,) bloc, of wood is.



Option A. transmissive heat.Option B. radiant heat.

Option C. latent heat.Correct Answer is. radiant heat.

Explanation. -he embers of burnin) wood produce radiant heat.

Question Number. +2. *$: in what form holds most ener)&.Option A. =team.

Option B. 'ce.

Option C. %ater.Correct Answer is. =team.

Explanation. %ater in the form of steam has the most ener).

Question Number. +4. A bloc, of metal is melted. 't will.

Option A. remain the same volume.

Option B. decrease in volume.Option C. increase in volume.

Correct Answer is. increase in volume.Explanation. N'(.

Question Number. +. -he ener) that ice at : IC must )ain so that it turns to water at : IC is called.

Option A. the latent heat of vaporisation.Option B. sensible ener).

Option C. the latent heat of fusion.Correct Answer is. the latent heat of fusion.

Explanation. <usion means ;to melt;.



Question Number. +5. 'deal )as )oes throu)h an isothermal process. 't is in accordance with which law&.Option A. Fa (ussac;s.

Option B. Bole;s.Option C. Charles;s.

Correct Answer is. Bole;s.Explanation. Bole;s (aw 80 " constant9 assumes constant temperature 8isothermal9.

Question Number. :. -he =team oint of water is.

Option A. : Helvin.

Option B. 343 Helvin.Option C. $43 Helvin.

Correct Answer is. 343 Helvin.Explanation. H " C @ $43.

Question Number. 1. A $:: cm titanium bar increases in len)th b $ cm when its temperature rises b 1:: IC. 'ts linear

expansivit is.Option A. :.:1:1 per IC.

Option B. :.:1 per IC.Option C. :.:::1 per IC.

Correct Answer is. :.:::1 per IC.

Explanation. Expansion " ( x alpha x temp.chan)e =o alpha " Expansion08( x temp.chan)e9 " $08$:: 1::9 " :.:::1 per IC.

Question Number. $. *eat transmission b convection is confined to.

Option A. li6uids and )ases.Option B. )ases and solids.

Option C. solids and li6uids.

Correct Answer is. li6uids and )ases.Explanation. 'n convection# the material must ;flow; and carr the heat with it.



Question Number. 3. %hich contains the least amount of heat ener)&.Option A. Both 1 ,) of ice at : IC and 1 ,) of water at : IC have the same amount of heat ener).

Option B. 1 ,) of water at : IC.Option C. 1 ,) of ice at : IC.Correct Answer is. Both 1 ,) of ice at : IC and 1 ,) of water at : IC have the same amount of heat ener).

Explanation. -he temperature onl is a measure of the heat ener)# not the state.

Question Number. +. %hich wei)hs the most&.Option A. 1 ,) of ice at : IC.

Option B. Both 1 ,) of ice at : IC and 1 ,) of water at : IC have the same wei)ht.Option C. 1 ,) of water at : IC.

Correct Answer is. Both 1 ,) of ice at : IC and 1 ,) of water at : IC have the same wei)ht.Explanation. N'(.

Question Number. . %hich has the )reatest densit&.

Option A. 1 ,) of ice at : IC.Option B. 1 ,) of water at : IC.

Option C. Both 1 ,) of ice at : IC and 1 ,) of ice at : IC have the same densit.

Correct Answer is. Both 1 ,) of ice at : IC and 1 ,) of ice at : IC have the same densit.Explanation. N'(.

Question Number. 2. %hich has the )reatest volume&.Option A. 1 ,) of water at : IC.

Option B. 1 ,) of ice at : IC.

Option C. Both 1 ,) of ice at : IC and 1 ,) of ice at : IC have the same volume.Correct Answer is. Both 1 ,) of ice at : IC and 1 ,) of ice at : IC have the same volume.



Explanation. N'(.

Question Number. 4. -he temperature at which water will exist as a solid# li6uid and )as# all at the same time# is called.

Option A. the triple point and is approximatel : IC.Option B. the tri!state point and is approximatel at : IC.

Option C. the tri!state point and is approximatel 5 IC.Correct Answer is. the triple point and is approximatel : IC.

Explanation. N'(.

Question Number. . 7aterial A and material B are both removed from the same oven at the same time# after bein) in thesame amount of time. 7aterial A is a hi)her temperature than material B. -his is because.

Option A. material B has a hi)her specific heat capacit.Option B. material A must have had a hi)her temperature before it was put in the oven.

Option C. material A has a hi)her specific heat capacit.

Correct Answer is. material A has a hi)her specific heat capacit.Explanation. N'(.

4. !"tics #$i%ht&.

Question Number. 1. %hat is the thic,ness of a sin)le mode fibre optic&.

Option A. $:: micrometres.Option B. micrometres.

Option C. : micrometres.Correct Answer is. micrometres.

Explanation. 'ntroduction to <iber Optics 3rd Edition Tohn Crisp and Barr Elliot a)e 24.



Question Number. $. iver)ent li)ht ras )ive rise to.Option A. a real ima)e.

Option B. a virtual ima)e.Option C. chromatic aberrations.

Correct Answer is. a virtual ima)e.Explanation. N'(.

Question Number. 3. 'n fibreoptics the tpe of cable is chosen b.

Option A. matchin) the diameter of the cable to the wavelen)th.

Option B. distance re6uired to travel.Option C. the stren)th of si)nal needed.

Correct Answer is. distance re6uired to travel.Explanation. 'ntroduction to <iber Optics b Tohn Crisp.

Question Number. +. A material with a )raduall varin) refractive index is said to have a.

Option A. )raded index.Option B. step index.

Option C. sin)le index.Correct Answer is. )raded index.

Explanation. 'ntroduction to <iber Optics b Tohn Crisp.

Question Number. . <ibre optic cables are capable of transmittin) li)ht at.Option A. 1.55 1: m0s.

Option B. 3 1: m0s.Option C. :.55 1: m0s.

Correct Answer is. 1.55 1: m0s.

Explanation. =peed of li)ht in a vacuum is 3 1: to the power . But the refractiv index of )lass is about 1.. =o divide 3 1: to the power b 1....'ntroduction to <iber Optics b Tohn Crisp.



Question Number. 2. =tep index fibres suffer from.Option A. dispersion.

Option B. scatter.Option C. attenuation.Correct Answer is. dispersion.

Explanation. ispersion also limits the bandwidth in step index fibres. 'ntroduction to <iber Optics b Tohn Crisp.

Question Number. 4. Attenuated pulses have their siRes and shape restored b.Option A. re)enerators.

Option B. impedance matchin) transformers.Option C. opto!isolators.

Correct Answer is. re)enerators.Explanation. Je)enerators are placed in the fibre optic line 8usuall not less than 1 ,m spacin)s9 to boost the si)nal 8li,e a rela

sstem9. -hus reducin) attenuation at the recievin) end. 'ntroduction to <iber Optics b Tohn Crisp.

Question Number. . Attenuation in fibre optic cables is most often caused b.Option A. bac,scatterin) and microbends.

Option B. microbends and scatterin).

Option C. absorption and scatterin).Correct Answer is. absorption and scatterin).

Explanation. Althou)h all three 8microbends# scatterin) and absorbtion9 cause attenuation in fibre optics# microbends are the mosteas to manufacture out of the cable. 'ntroduction to <iber Optics b Tohn Crisp.

Question Number. 5. <or a concave lens the ima)e is.

Option A. virtual.Option B. real.



Option C. a chromatic orb.Correct Answer is. virtual.

Explanation. N'(.

Question Number. 1:. 'n a fibre optic flin) control sstem.Option A. the sensor and the transmitter re6uire electrical power.

Option B. the transmitter re6uires power.Option C. the sensor re6uires electrical power.

Correct Answer is. the sensor and the transmitter re6uire electrical power.

Explanation. -he transmitter is an (E or laser 8both need power9 and the receiver is a photodiode# which needs electrical power.'ntroduction to <iber Optics b Tohn Crisp.

Question Number. 11. hotons in a semiconductor are stimulated to produce excess photons to be emitted. -his is a.Option A. photodiode.

Option B. laser diode.

Option C. (E.Correct Answer is. laser diode.

Explanation. (A=EJ ! (i)ht Amplification b the =timulated Emition of Jadiation. 'ntroduction to <iber Optics b Tohn Crisp.

Question Number. 1$. 'n a fibre optic flin) control sstem# which of the followin) are used&.Option A. =in)le mode fibre.

Option B. 7ulti mode fibre.Option C. ual mode fibre.

Correct Answer is. 7ulti mode fibre.Explanation. 'ntroduction to <iber Optics b Tohn Crisp.

Question Number. 13. A fibre optic cable is attenuated at $5 dB0metre. -his is referrin) to.



Option A. allowable loss.Option B. the fi)ure allowed for when calculatin) power )ain.

Option C. the maximum cable run allowed in the sstem.Correct Answer is. the fi)ure allowed for when calculatin) power )ain.


Question Number. 1+. -he fibre optic receiver is a.Option A. laser diode.

Option B. photodiode.

Option C. li)ht emittin) diode.Correct Answer is. photodiode.


Question Number. 1. Je)enerators are used in fibre optic sstems to reduce.

Option A. dispersion.

Option B. random emission.Option C. attenuation.

Correct Answer is. attenuation.Explanation. 'ntroduction to <iber Optics b Tohn Crisp.

Question Number. 12. %hen li)ht ras enter a medium with a different refractive index the.

Option A. chan)e direction.Option B. reflect.

Option C. chan)e speed.Correct Answer is. chan)e speed.

Explanation. -he will onl chan)e direction if the hit the surface at an an)le other than : de)rees 8to the normal9. 't will alwas

chan)e speed however.



Question Number. 14. A conver)in) lens can focus li)ht ras because.

Option A. the incomin) ras are alread conver)in).Option B. it is spherical.

Option C. the li)ht ras travel more slowl at the centre.Correct Answer is. it is spherical.Explanation. A conver)in) lens is a part of a sphere# so li)ht ras hit it at different an)les dependin) upon its distance from the

principle axis.

Question Number. 1. 'f a ra of li)ht enters a fibre optic cable with a refractive index of 1.# what is the speed of the ra in thecable&.

Option A. 3::#::: ,ilometres per second.Option B. +::#::: ,ilometres per second.

Option C. $::#::: ,ilometres per second.Correct Answer is. $::#::: ,ilometres per second.

Explanation. vacuum 0 speed of li)ht in medium. 1. " 3::#::: 0 C# C " $::#::: ,m0s. 'ntroduction to <iber Optics b Tohn Crisp.

Question Number. 15. vacuum 0 speed of li)ht in medium. 1. " 3::#::: 0 C# C " $::#::: ,m0s. 'ntroduction to <iber Optics b Tohn Crisp.

Option A. a constant refractive index across its cross sectional area.

Option B. a variable refractive index across its cross sectional area.Option C. a sudden chan)e in refractive index.

Correct Answer is. a variable refractive index across its cross sectional area.Explanation. 'ntroduction to <iber Optics b Tohn Crisp.

Question Number. $:. A mirror.

Option A. refracts all li)ht.Option B. reflects all li)ht.



Option C. absorbs a percenta)e of li)ht.Correct Answer is. absorbs a percenta)e of li)ht.

Explanation. N'(.

Question Number. $1. -he width of a multimode fibre optic cable 8includin) the claddin)9 is.Option A. 1 Wm.

Option B. 1:: Wm.Option C. 1: Wm.

Correct Answer is. 1:: Wm.

Explanation. -his must be referrin) to the ;overall; diameter ! i.e that of the claddin)# since the core is : or 2$. micrometers8microns9. 'ntroduction to <iber Optics b Tohn Crisp.

Question Number. $$. A varin) refractive index optical fibre is a.Option A. sin)le index.

Option B. )raded index.

Option C. step index.Correct Answer is. )raded index.


Question Number. $3. Jefractive index is.Option A. the speed of li)ht in the medium divided b the speed of li)ht in air.

Option B. the speed of li)ht in air divided b the speed of li)ht in the medium.Option C. the speed of li)ht in air multiplied b the speed of li)ht in the medium.

Correct Answer is. the speed of li)ht in air multiplied b the speed of li)ht in the medium.Explanation. 'ntroduction to <iber Optics b Tohn Crisp pa)e 11.

Question Number. $+. %hat is the speed of li)ht in ,m0s&.



Option A. 3:::.Option B. 3 1:.

Option C. 3:::::.Correct Answer is. 3:::::.

Explanation. 3::#:::#::: m0s " 3::#:::#:::01::: ,m0s " 3::#::: ,m0s. 'ntroduction to <iber Optics b Tohn Crisp.

Question Number. $. -he focal point of a spherical mirror is.Option A. 10$ the radius.

Option B. the radius.

Option C. $ the radius.Correct Answer is. 10$ the radius.

Explanation. N'(.

Question Number. $2. %hat is the speed of li)ht in air at : IC.

Option A. 331 m0s.

Option B. 3:: m0Ws.Option C. 331 mm0s.

Correct Answer is. 3:: m0Ws.Explanation. =tandard fi)ure is 3::#:::#::: m0s. Convert that to m0microsecond and ou must divide b 1#:::#:::. 'ntroduction to

<iber Optics b Tohn Crisp.

Question Number. $4. *ow far will li)ht travel in one ear&.Option A. 5.+2 1:1 m.

Option B. 1. 1:11 m.Option C. 3 1:1 m.

Correct Answer is. 5.+2 1:1 m.

Explanation. 2: 2: $+ 32 3:::::::: " 5.+2.... %hat a calculation to do without our calculator ! estimate as best ou can.



Question Number. $. %hen different si)nals are transmitted down a fibre optic core# are the distin)uished b a.

Option A. active filter.Option B. passive filter.

Option C. star coupler.Correct Answer is. passive filter.Explanation. A ;passive filter; simpl sorts out and0or bloc,s certain wavelen)ths. An ;active filter; will catch certain wavelen)ths and

convert them to other wavelen)th. 'ntroduction to <iber Optics b Tohn Crisp.

Question Number. $5. On an Optical -ime omain Jeflectometer 8O-J9# the amount of attenuation in the cable is.Option A. read from the cathode ra displa.

Option B. derived from a )raph.Option C. dialed into O-J.

Correct Answer is. read from the cathode ra displa.Explanation. =ee ;'ntroduction to <iber Optics; p). 14. 'ntroduction to <iber Optics b Tohn Crisp.

Question Number. 3:. 'n a flat surfaced mirror# the an)le of reflection is.

Option A. e6ual to the an)le of incidence.Option B. less than the an)le of incidence.

Option C. more than the an)le of incidence.

Correct Answer is. e6ual to the an)le of incidence.Explanation. -he an)le of incidence is the an)le the li)ht ma,es with the ;normal; line. -he an)le of reflection is e6ual on the other

side of the ;normal; line.

Question Number. 31. 'n a multimode fibre optic cable# the.

Option A. diameter is )reater than the wavelen)th.

Option B. diameter is less than the wavelen)th.Option C. diameter is e6ual to the wavelen)th.



Correct Answer is. diameter is )reater than the wavelen)th.Explanation. 7ultimode fibres are bi))er than sin)le mode fibres. 'ntroduction to <iber Optics b Tohn Crisp.

Question Number. 3$. A conver)in) lens conver)es li)ht ras because.Option A. it is not a sphere.Option B. the li)ht source is alread conver)in).

Option C. the li)ht waves are refracted less in the centre of the lens than the are at the extremities.Correct Answer is. the li)ht waves are refracted less in the centre of the lens than the are at the extremities.

Explanation. N'(.

Question Number. 33. 'n fibre optics. -he fibre cable has a refractive index of 1.# what is its speed&.Option A. 3:: meters0microsecond.

Option B. +:: meters0microsecond.Option C. $:: meters0microsecond.

Correct Answer is. $:: meters0microsecond.

Explanation. n " speed of li)ht in vacuum 0 speed of li)ht in substance. 1. " 3::m per microsecond 0 speed of li)ht in fibre.-ranspose.. 'ntroduction to <iber Optics b Tohn Crisp.

Question Number. 3+. A material# which has a varin) refractive index is a.

Option A. step index.Option B. sin)le index.

Option C. double index.Correct Answer is. step index.

Explanation. A varin) refractive index is either ;step index; or ;)raded index;. =tep index is the onl answer available. 'ntroductionto <iber Optics b Tohn Crisp.

Question Number. 3. A ra of li)ht that travels throu)h the centre of curvature of a concave mirror before bein) reflected#



how is it reflected&.Option A. -hrou)h the focal point.

Option B. Neither of the above.Option C. -hrou)h the centre of curvature.

Correct Answer is. -hrou)h the focal point.Explanation. -he focal point and the centre of curvature of the concave mirror lie on the same center line. A ra of li)ht travellin)alon) that centre line will be reflected ri)ht bac, alon) the same path ! throu)h the focal point.

Question Number. 32. %hat will the ima)e produced throu)h a diver)ent lens be&.

Option A. Ne)ative.Option B. Jeal.

Option C. irtual.Correct Answer is. irtual.

Explanation. -he ima)e produced b a diver)ent 8concave9 lens is a ;'J-LA(; ima)e. i.e ou could not ta,e a photo)raph of it.

Question Number. 34. %hen a beam of li)ht passes from one medium to another with a different refractive index# what willhappen to the beam of li)ht&.

Option A. -otal internal reflection.Option B. Chan)e speed.

Option C. -otal internal refraction.

Correct Answer is. Chan)e speed.Explanation. A beam of li)ht passes from one medium to another ! its speed will chan)e. -his is the onl statement of certaint#

since no information is )iven about the an)le of incidence.

Question Number. 3. A fibre optic cable has different refractive indexes across its core diameter# it is a.

Option A. sin)le mode fibre.

Option B. )raded index fibre.Option C. step index fibre.



Correct Answer is. )raded index fibre.Explanation. A fibre optic with a different refractive index across its core diameter is a ;)raded index;. 'ntroduction to <iber Optics

b Tohn Crisp.

Question Number. 35. 'ncident li)ht travellin) from air to water# the li)ht is.Option A. bent towards the normal.

Option B. not bent.Option C. bent awa from the normal.

Correct Answer is. bent towards the normal.

Explanation. (i)ht travellin) from air to water# the waves are bent 8or an)led9 less when measured to the normal.

Question Number. +:. 'f a li)ht is beamed at a flat mirror# what is the an)le it reflects at&.

Option A. Jeflective index.Option B. An)le of incidence.

Option C. Jeactive an)le.

Correct Answer is. An)le of incidence.Explanation. -he an)le the li)ht hits a mirror 8to the normal9 is the An)le of 'ncidence. -he an)le it bounces off 8to the normal9 is

the An)le of Jeflection. -he two an)les are alwas e6ual.

Question Number. +1. 'n a )raded index multimode fibre is the refractive index.Option A. is hi)h.

Option B. varies hi)h and low.Option C. is low.

Correct Answer is. varies hi)h and low.Explanation. 'n a )raded index fibre optic cable# the refractive index is low at the ed)e# hi)h in the centre and then low at the other

ed)e. 'ntroduction to <iber Optics b Tohn Crisp.



Question Number. +$. -he fibre optic receiver is a.Option A. photodiode.

Option B. laser diode.Option C. li)ht emittin) diode.

Correct Answer is. photodiode.

Explanation. -he fibre optic receiver is a photo diode. 'ntroduction to <iber Optics b Tohn Crisp.

Question Number. +3. -he usable bandwidth of a fibre is determined b.

Option A. the wavelen)th of the li)ht.

Option B. the an)le of total internal reflection.Option C. the intermodal dispersion.

Correct Answer is. the intermodal dispersion.Explanation. Bandwidth is the ran)e of fre6uencies that can be transmitted. =ince different fre6uencies travel at different speed 8in

)lass9 the will arrive at the other end at different times. -his is the cause of intermodal dispersion. 'ntroduction to <iber Optics bTohn Crisp.

Question Number. ++. 'f# with a concave mirror the ima)e is placed beond the centre of curvature# the ima)e produced will

be.Option A. virtual# erect and lar)er.

Option B. real# inverted and smaller.

Option C. real# erect and lar)er.Correct Answer is. real# inverted and smaller.

Explanation.

Question Number. +. -he power of a lens is calculated from the.

Option A. reciprocal of the focal len)th.

Option B. product of the focal len)th and its distance from the pole.Option C. focal len)th s6uared.



Correct Answer is. reciprocal of the focal len)th.Explanation. focal len)th s6uared.

Question Number. +2. =in)le mode optical fibre cable will.

Option A. have several li)ht ras to pass.Option B. have diameter matched to wavelen)th of li)ht passed.

Option C. cause distortion to the li)ht wave at the output end which is dependent upon the len)th of the cable.Correct Answer is. have diameter matched to wavelen)th of li)ht passed.

Explanation. 'ntroduction to <iber Optics Tohn Crisp pa)e 2+.

Question Number. +4. %hen an emer)ent li)ht wave enters a diver)ent lens.Option A. it will focus beond the lens.

Option B. it will focus behind the lens.Option C. it is s spherical.

Correct Answer is. it will focus behind the lens.

Explanation. A diver)ent lens 8also ,nown as concave lens9 focuses the ima)e on the same side of the lens as the ob?ect. 't istherefore a virtual ima)e.

Question Number. +. 'n a concave mirror# li)ht ras parallel to mirror axis will be reflected.

Option A. throu)h the focal point.Option B. bac, to the centre of curvature.

Option C. parallel to mirror axis.Correct Answer is. throu)h the focal point.

Explanation. All the li)ht ras focus at the focal point.

Question Number. +5. 'n a concave mirror# a li)ht ra passin) throu)h the focal point will be reflected.Option A. throu)h the focal point.



Option B. on the centre line of the mirror.Option C. parallel to the axis.

Correct Answer is. parallel to the axis.Explanation. All ras which pass throu)h the focal point# reflect from the mirror then travel parallel to the axis.

Question Number. :. A passive sensor.

Option A. does not re6uire power.Option B. re6uires power for the sensor.

Option C. re6uires power for the transmitter.

Correct Answer is. does not re6uire power.Explanation. assive sensors do not re6uire power. 'ntroduction to <iber Optics b Tohn Crisp.

Question Number. 1. Jefractive index is.Option A. lower for +XC water than :XC ice.

Option B. hi)her for diamond than acrlic.

Option C. hi)hest for water.Correct Answer is. hi)her for diamond than acrlic.

Explanation. iamond has the hi)hest refractive index. Note/ + IC. water is more dense than ice so has )reater refractive index.

Question Number. $. <or optical fibres# the refractive index of the claddin) compared to that of the core.Option A. can be either bi))er or smaller dependin) on specification.

Option B. is alwas smaller.Option C. is alwas lar)er.

Correct Answer is. is alwas smaller.Explanation. Claddin) alwas has a lower refractive index. 'ntroduction to <iber Optics b Tohn Crisp.

Question Number. 3. -he abilit for a fibreoptic cable to carr waves is dependent on.





Question Number. 4. %hen refraction ta,es place.Option A. the fre6uenc remains constant.

Option B. the speed of the wave remains constant.

Option C. the wavelen)th remains constant.Correct Answer is. the fre6uenc remains constant.

Explanation. <re6uenc remains constant.

Question Number. . %hen li)ht meets a Flass 0 Air boundar at an an)le of incidence less than the critical an)le.Option A. -otal 'nternal Jeflection ta,es place.

Option B. no li)ht is reflected.Option C. both reflection and refraction ta,es place.

Correct Answer is. both reflection and refraction ta,es place.Explanation. Even at an)les less than the critical# a small portion of the li)ht in reflected 'ntroduction to <iber Optics b Tohn Crisp.

Question Number. 5. An ob?ect placed more than twice the focal len)th beond a conver)in) lens will form an ima)e that is.

Option A. inverted# lar)er and virtual.

Option B. inverted# smaller and real.

Option C. erect# smaller and real.Correct Answer is. inverted# smaller and real.

Explanation. N'(.

Question Number. 2:. A parabolic mirror ma be used to prevent.

Option A. lateral inversion.

Option B. spherical aberration.Option C. formation of a penumbra.



Correct Answer is. spherical aberration.Explanation. N'(.

Question Number. 21. -he refractive index for air is approximatel.

Option A. 1.Option B. 1:.

Option C. :.Correct Answer is. 1.


Question Number. 2$. 'n optical fibres the total internal reflection of li)ht onl occurs at an)les.Option A. less than the critical an)le.

Option B. e6ual to the critical an)le.Option C. )reater than the critical an)le.

Correct Answer is. )reater than the critical an)le.

Explanation. Jemember that the critical an)le is measured from the normal 8or perpendicular9 to the surface. 'ntroduction to <iberOptics b Tohn Crisp pa)e 1.

Question Number. 23. 'n a concave mirror# if an ob?ect is placed between the focal point and the pole# the ima)e will be.

Option A. real# erect and diminished.

Option B. virtual and on the opposite side.

Option C. real# inverted and lar)er.Correct Answer is. virtual and on the opposite side.Explanation. N'(.

Question Number. 2+. -he purpose of a patch cord used with an O-J is.

O i A f i f h ib i bl d i



Option A. to compensate for an contraction of the <iber optic cable durin) test.Option B. to overcome the dead Rone problem caused b reflection at O-J launch connector.

Option C. to attenuate O-J output power which could cause dama)e to the cable under test.Correct Answer is. to overcome the dead Rone problem caused b reflection at O-J launch connector.

Explanation. 'ntroduction to <iber Optics Tohn Crisp a)e 12.

Question Number. 2. -he power of a lens is measured in.Option A. (umens per %att.

Option B. %atts.

Option C. iopters.Correct Answer is. iopters.

Explanation. N'(.

Question Number. 22. <or a concave lens# the ima)e is.

Option A. real.

Option B. virtual.Option C. a chromatic orb.

Correct Answer is. virtual.Explanation. N'(.

Question Number. 24. (asers use which source of li)ht&.

Option A. =cattered.

Option B. Jefraction.Option C. Coherent.Correct Answer is. Coherent.


Q i N b 2 'll i i f l d i



Question Number. 2. 'llumination of one lumen per metre s6uared is one.Option A. luxor.

Option B. lux.Option C. candle.

Correct Answer is. lux.

Explanation. N'(.

Question Number. 25. -he amount of li)ht emitted b a lamp can be measured in.

Option A. candle;s.

Option B. luxors.Option C. lumens.

Correct Answer is. lumens.Explanation. N'(.

Question Number. 4:. -he li)ht )atherin) power of a lens is indicated b its.

Option A. material.Option B. thic,ness of the lens.

Option C. focal ratio.Correct Answer is. focal ratio.

Explanation. N'(.

Question Number. 41. 'n order for a conver)in) lens to form a real ima)e# the ob?ect distance must be more than.

Option A. focal len)th.Option B. times the thic,ness of the lens.Option C. 1 inch.

Correct Answer is. focal len)th.

Explanation. N'(.



Question Number. 4$. A lens is thic,er in the middle than at the ed)es. 't is.

Option A. conver)in).Option B. concave.

Option C. upsharp.

Correct Answer is. conver)in).Explanation. N'(. http/00www.phs.hawaii.edu0Yteb0optics0?ava0clens0

Question Number. 43. %hen is the onl time a concave mirror forms a virtual ima)e&.

Option A. %hen the ob?ect is at the focal point.Option B. %hen the ob?ect is inside the focal point.

Option C. %hen the ob?ect is placed at the centre of curvature.Correct Answer is. %hen the ob?ect is inside the focal point.

Explanation. N'(. http/00www.)lenbroo,.,1$.il.us0)bssci0phs0class0refln0u13l3e.html

Question Number. 4+. A convex mirror forms a virtual ima)e when.Option A. the ob?ect is at the centre of curvature.

Option B. the ob?ect is inside the focus.Option C. alwas.

Correct Answer is. alwas.

Explanation. N'(.

Question Number. 4. A Concave mirror is used in.Option A. a rear view mirror.Option B. a periscope.

Option C. headli)hts.

Correct Answer is. headli)hts.Explanation. N'(.



'. (a)e Motion and Sound.

Question Number. 1. %hen the movement of an ob?ect rotatin) around a radius at a constant speed is pro?ected onto a plane#

the pro?ected ima)e follows what path&.Option A. =inusoidal.

Option B. (ateral.Option C. (on)itudinal.

Correct Answer is. =inusoidal.

Explanation. N'(.

Question Number. $. -he speed of sound in air at : IC is approximatel.

Option A. 331 m0s.

Option B. 3 1: m0s.Option C. 11 m0s.

Correct Answer is. 331 m0s.Explanation. N'(.

Question Number. 3. 'f a wave travelin) to a point meets a wave travelin) from that point# of e6ual fre6uenc.

Option A. the two waves cancel each other out.Option B. the will have no effect on each other.

Option C. a standin) wave is formed.

Correct Answer is. a standin) wave is formed.Explanation. N'(.

Question Number. +. Qualit of sound depends upon.Option A. pure sound waves bein) produced b the source.

Option B fre6uenc and harmonics of the waves bein) produced



Option B. fre6uenc and harmonics of the waves bein) produced.Option C. 6ualit of the receiver.

Correct Answer is. fre6uenc and harmonics of the waves bein) produced.Explanation. N'(.

Question Number. . articles vibratin) in air.

Option A. tend to )ive off heat.Option B. tend to )ive off li)ht.

Option C. produce waves.

Correct Answer is. produce waves.Explanation. articles vibratin) in air produce sound.

Question Number. 2. -he fundamental fre6uenc is the.

Option A. 3rd harmonic.Option B. 1st harmonic.

Option C. $nd harmonic.Correct Answer is. 1st harmonic.

Explanation. N'(.

Question Number. 4. -he first overtone of a sound wave is the.Option A. 1st harmonic.

Option B. fundamental fre6uenc.

Option C. $nd harmonic.Correct Answer is. $nd harmonic.Explanation. N'(.

Question Number. . -wo pure tones of similar fre6uenc are heard b a person. %hat will the hear&.

Option A One pure tone



Option A. One pure tone.Option B. A beat of the two tones.

Option C. -wo tones.Correct Answer is. A beat of the two tones.

Explanation. At certain points# the trou)hs cancel the pea,s. At other points the pea,s ;add to; other pea,s. -he net effect is a low

fre6uenc oscillation in amplitude.U.

Question Number. 5. -wo sound waves of the same fre6uenc and amplitude are movin) half a wavelen)th out of phase with

each other. %hat will be heard&.

Option A. Nothin).Option B. -wice the volume of one of the sound waves.

Option C. *alf the volume of one of the sound waves.Correct Answer is. Nothin).

Explanation. -he pea,s will cancel the trou)hs.

Question Number. 1:. A fire en)ine is approachin) ou with its siren on. As it passes ou its pitch.Option A. sta the same.

Option B. increases.Option C. decreases.

Correct Answer is. decreases.

Explanation. N'(.

Question Number. 11. Qualit of sound is dependant on.Option A. number and pitch of harmonics.Option B. medium it is travelin) throu)h.

Option C. fre6uenc of the suppl.

Correct Answer is. number and pitch of harmonics.Explanation. Qualit of sound is dependant upon the number of harmonics and the pitch.



Question Number. 1$. %hat fre6uenc is a tone which is + times the fundamental fre6uenc&.Option A. $nd overtone.

Option B. 3rd overtone.

Option C. 3rd harmonic.Correct Answer is. 3rd overtone.

Explanation. -he +th harmonic is also called the 3rd overtone.

Question Number. 13. 'ntensit of sound waves.Option A. is not affected b distance.

Option B. varies inversel as the s6uare of distance from source.Option C. var directl as per distance from source.

Correct Answer is. varies inversel as the s6uare of distance from source.

Explanation. =ound diminishes with the s6uare of the distance from the source 8i.e double the distance " 10+ the dB# triple thedistance " 105 the dB etc.9 ! -echnicall called a lo)!linear scale.

Question Number. 1+. 'n a standin) wave the point where continuous vibration of maximum amplitude occurs is called the.

Option A. harmonic.

Option B. anti!node.Option C. node.

Correct Answer is. anti!node.

Explanation. -he pea,s are the anti!nodes. =ee External website.

Question Number. 1. -he name )iven to sounds below that which the human ear can detect# i.e. below $:*R is.

Option A. ultra sound.Option B. infra sound.

Option C sonic pitch



Option C. sonic pitch.Correct Answer is. infra sound.

Explanation. =ee how silent thunder can shatter windows at External website.

Question Number. 12. -he speed of sound in dr air is 331 m0s. 'n a solid the speed would.Option A. increase.

Option B. decrease.Option C. sta the same.

Correct Answer is. increase.

Explanation. =peed of sound is )reater in a solid than in air.

Question Number. 14. 'f a tunin) for, is struc, and held close to the ear and slowl rotated about the vertical axis# in one

rotation how man times is there no sound&.

Option A. $.Option B. =ound is audible for the whole revolution.

Option C. +.Correct Answer is. $.

Explanation. -wo sound waves interfere creatin) a relativel ;dead; Rone for approximatel $ 6uarters of the rotation.

Question Number. 1. %hat is the phenomenon that occurs when a siren that approaches ou# at the point of passin)# the pitchdecreases&.

Option A. Jesonance.

Option B. oppler effect.Option C. Echo.Correct Answer is. oppler effect.

Explanation. oppler effect.

Question Number 15 <or hearin) protection noise cancellin) headphones



Question Number. 15. <or hearin) protection# noise cancellin) headphones.Option A. cannot reduce the noise from outside completel.

Option B. operate b destructive interference of sound waves.Option C. operate b constructive interference of sound waves.

Correct Answer is. operate b destructive interference of sound waves.

Explanation. N'(.

Question Number. $:. -unin) for,s are used to vibrate musical instruments because.

Option A. the produce both of the other effects described.

Option B. the produce a beat when plaed to)ether with the instrument.Option C. the produce a pure note.

Correct Answer is. the produce a pure note.Explanation. A tunin) for, produces a pure note# which can be used to tune a )uitar 8for example9 b listenin) for the beat produced

when plaed alon)side an out!of!tune strin).

Question Number. $1. %hen an open pipe is plaed and a note is heard.Option A. the lowest fre6uenc of the note is called second harmonic.

Option B. resonance occurs with standin) waves set up inside the pipe.Option C. there is a 1:X phase chan)e at the open end.

Correct Answer is. resonance occurs with standin) waves set up inside the pipe.

Explanation. N'(.

Question Number. $$. -wo sound waves are the same but sli)htl out of phase. -his means that.Option A. the beat fre6uenc is the same.Option B. there will be no beat fre6uenc.

Option C. the beat fre6uenc will be sli)htl different.

Correct Answer is. the beat fre6uenc is the same.Explanation. -he beat fre6uenc is the same fre6uenc as either of the two fre6uencies.



Question Number. $3. 'n a vibratin) strin)# the point at which there is no displacement is called a.Option A. antinode.

Option B. node.

Option C. fundamental mode.Correct Answer is. node.

Explanation. N'(.

Question Number. $+. -he amplitude of a -ransverse %ave is the distance from.Option A. the top of a pea, to the bottom of a trou)h.

Option B. half the distance from pea, to trou)h.Option C. one pea, to the next.

Correct Answer is. half the distance from pea, to trou)h.

Explanation. N'(.

Question Number. $. 'ncreasin) the Amplitude of a sound wave increases its.

Option A. pitch.Option B. moment.

Option C. loudness.

Correct Answer is. loudness.Explanation. N'(.

Question Number. $2. A wave in which the vibrations are perpendicular# or at ri)ht an)les to the direction of wave travel is a.

Option A. ispersion %ave.

Option B. (on)itudinal %ave.Option C. -ransverse %ave.

Correct Answer is. -ransverse %ave.



Correct Answer is. -ransverse %ave.Explanation. N'(.

Question Number. $4. %hen a strin) vibrates# the point at which maximum displacement occurs is called the.

Option A. node.Option B. antinode.

Option C. primar node.Correct Answer is. antinode.

Explanation. N'(.

Question Number. $. 'ncreasin) the fre6uenc of a sound wave increases its.Option A. pitch.

Option B. loudness.

Option C. moment.Correct Answer is. pitch.

Explanation. N'(.

Question Number. $5. A wave in which the vibrations are parallel to# or alon)# the direction of travel is a.

Option A. -ransverse %ave.

Option B. Lpri)ht %ave.Option C. (on)itudinal %ave.

Correct Answer is. (on)itudinal %ave.

Explanation. N'(.

Question Number. 3:. 'f a strin) is vibratin) at the 3rd harmonic# it will be oscillatin) at.

Option A. <undamental <re6uenc.Option B. + times its fundamental fre6uenc.

Option C. 3 times its fundamental fre6uenc.



p 6 Correct Answer is. 3 times its fundamental fre6uenc.

Explanation. 1st harmonic " 1 fundamental fre6uenc. $nd harmonic " $ fundamental fre6uenc. 3rd harmonic " 3 fundamentalfre6uenc.

Question Number. 31. -he varin) pitch of the sound of a train passin) b is caused b a phenomenon ,nown as.

Option A. oppler effect.Option B. double fre6uenc.

Option C. resonance.

Correct Answer is. oppler effect.Explanation. N'(.

Question Number. 3$. %avelen)th is.

Option A. distance from trou)h to crest.Option B. distance between crests.

Option C. distance between top and bottom.Correct Answer is. distance between crests.

Explanation. N'(.

Question Number. 33. -he speed of sound at standard atmospheric temperature and pressure is.Option A. 3+ Hm0s.

Option B. 3+: m0s.

Option C. 3+: Hm0s.Correct Answer is. 3+: m0s.Explanation. N'(.

Question Number. 3+. 'n which medium does sound travel the fastest&.

Option A. =teel.



pOption B. Air.

Option C. %ater.Correct Answer is. =teel.

Explanation. <astest to slowest ! =olid# li6uid# )as.

Question Number. 3. %hich has the most effect on the speed of sound in air&.Option A. -emperature.

Option B. %avelen)th.

Option C. <re6uenc.Correct Answer is. -emperature.

Explanation. N'(.

Question Number. 32. -he fundamental fre6uenc of a control cable is 1: *R# the fre6uenc of the $nd *armonic is.Option A. $: *R.

Option B. $: H*R.Option C. 1: *R.

Correct Answer is. $: *R.Explanation. $nd harmonic " $ fundamental fre6uenc.

Question Number. 34. %hich of the followin) is an example of a (on)itudinal %ave&.

Option A. =ound %ave.

Option B. Jadio %ave.Option C. (i)ht %ave.Correct Answer is. =ound %ave.

Explanation. N'(.

Question Number. 3. %hat is the wavelen)th of a note of fre6uenc 1,*R when its velocit is 3+:m0s&.



Q ) 6 Option A. 3.+m.

Option B. :.3+m.Option C. :.3+,m.

Correct Answer is. :.3+m.

Explanation. " f Z Z"0f "3+:01::: 8answer in =' units of metres9.

*.

Question Number. 1. A bod drops from 1:m# it will hit the )round in.Option A. √2 seconds.Option B. $ seconds.Option C. 1 =econd.

o!!ect Ans"e! is. √2 seconds.

Explanation. s " ut @ [ at$ s " 10$at$ since u " : 1: " [81:9t$ since a = 10 #app!ox.$ t = √#10/5$ = √2.

Question Number. $. %hat hei)ht of water is e6uivalent to 1 atmosphere&.Option A. $5ft.

Option B. 1:1ft.Option C. 33ft.

Correct Answer is. 33ft.

Explanation. Approximatel 1: m 833 ft9 depth of water " 1 atmosphere.

Question Number. 3. 1: B-L is e6uivalent to.

Option A. 23#2: Toules.Option B. 1:#: Toules.

Option C. 4: Toules.

Correct Answer is. 1:#: Toules.

Explanation. N'(.



Question Number. +. %hat does ;temperature of a bod; mean&.

Option A. 'ts hotness.

Option B. *ow it radiates heat.Option C. 'ts abilit to retain heat.

Correct Answer is. 'ts hotness.Explanation. N'(. http/00www.answers.com0topic0temperature

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