Chapter 09 - Electronics

8/3/2019 Chapter 09 - Electronics

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http://nazuris.blogspot.com/ [SPM] chapter 09 – ELECTRONICS

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1

SPM 2003

44 The process of adding a trivalent atom to a pure

silicon crystal is known as

[A] Doping

[B] Donating

[C] Excitation

[D] Polarization

45 The diagram shows a circuit containing bulbs X, Y and

Z.

Which bulb in the circuit will light up when the switch ison?

[A] Z only

[B] X and Y only

[C] Y and Z only

[D] X, Y and Z

46 The diagram shows the symbol for a transistor.

Which of the following shows the correct name of the

electrode P and the type of the transistor?

Electrode P Type of Transistor

[A] Emitter pnp

[B] Collector pnp

[C] Emitter npn

[D] Collector npn

47 The diagram shows a logic gates circuit.

Which of the following truth tables represents output R

in the circuits?

[A] P Q R [B] P Q R

0 0 1 0 0 0

0 1 0 0 1 1

1 0 1 1 0 0

1 1 0 1 1 1

[C] P Q R [D] P Q R

0 0 0 0 0 0

0 1 1 0 1 1

1 0 1 1 0 1

1 1 0 1 1 0

SPM 2004

42 When the switch is on, the current that flows in an

electronic advertisement board is 9.0 x 10-5

A.

What is the number of electrons flowing in the

advertisement board when is switched on for 2

hours?

[Charge of an electron = 1.6 x 10-9]

[A] 3.84 x 1011

[B] 1.67 x 1014

[C] 1.35 x 1018

[D] 4.17 x 1023

[E] 1.50 x 1027

43 The diagram shows the combination of three

logic gates.

The truth table for the combination of the three

logic gates is as follows-

Input Output

P Q R

0

0

1

1

0

1

0

1

1

1

1

0

What is gate X?

[A] AND [B] NAND

[B] OR [C] NOR

44 In which circuit does the bulb light up?










2

46 The circrait represents a Boolean algebraic

principle with output Z

Which of the Boolean algebraic expression representsthe output Z?

[A] Z = X.Y [C] Z = X.Y

[B] Z = X.Y [D] Z = X.Y

47 Which of the following, pairs of atoms can act s an

impurity to produce an n-type semiconductor when

doped into a pure semiconductor?

[A] Boron and phosphorus

[B] Arsenic and antimony

[C] Indium and gallium

[D] Antimony and gallium

SPM 2005

44 The diagram shows a circuit consisting of a diode and a

bulb. When the switch is on, the bulb does not light up.

Gambar rajah menunjukkan litar yang mengandungi

diod dan mentol. Apabila suis dihidupkan, mentol

tidak menyala.

What needs to be done to light up the bulb?

Apakah yang perlu dilakukan untuk menyalakan

mentol itu?

[A] Replace with a new bulb

Menggantikan mentol baru [B] Increase the number of dry cells

Menambahkan bilangan sel kering

[C] Reverse the diode connection

Menyongsangkan sambungan diod

[D] Connect a resistor parallel to the bulb

Menyambungkan satu perintang selari dengan

mentol

45 Which diagram shows the correct movement of an

electron beam in an electric field?

Gambar rajah pergerakan yang medan elektrik? yang

manakah menunjukkan betul bagi alur elektron dalam










3

46 The diagram shows a logic gate circuit with input

signals, K and L.

Gambar rajah menunjukkan satu litar get logik

dengan isyarat inputnya, K dan L.

Which of the following output signals is produced by the

logic gate circuit?

Antara isyarat output berikut, yang manakah dihasilkan

oleh litar get logik itu?

47 In which circuit will the light-emitting diode (LED) light up

when the switch is on?

Dalam litar manakah diod pemancar cahaya (LED)

akan menyala apabila suis dihidupkan?

SPM 2006

44 Which of the following circuits can function?

Antara litar berikut, yang manakah boleh berfungsi?

45 Which of the following diagrams is an n-type

semiconductor?

Antara rajah berikut, yang manakah semikonduktor

jenis-n?

46 The adding of impurity into pure semiconductor material

is known as

Penambahan bendasing ke dalam bahan semikonduktor

tulen dikenali sebagai

[A] doping

pendopan

[B] rectif ication

rektifikasi

[C] amplification

amplifikasi

[D] thermionic emission

pancaran termion










4

47 Diagram 28 shows a combination of three logic gates.

Rajah 28 menunjukkan kombinasi tiga get logik.

Which truth table is correct for the combination of the

three logic gates?Jadual kebenaran yang manakah betul bagi kombinasi

tiga get logik itu?

SPM 2007

44 Diagram 27 shows a circuit connected to the cathode ray

oscilloscope (CRO).

Rajah 27 menunjukkan satu litar yang disambungkan

kepada osiloskop sinar katod (OSK).

Which of the following traces is the correct one shown on

the CRO?

Antara surihan berikut, yang manakah surihan yang betul

dipaparkan pada OSK?

45 What is the function of a diode?

Apaknh fungsi diod?

[A] Acts as a current amplifier

Bertindak sebagai penguat arus

[B] Acts as an automatic switch

Bertindak sebagai suis automatik

[C] Stores electric charge

Menyimpan cas elektrik

[D] Allows the current to pass in one direction only

Membenarkan arus melalui dalam satu arah sahaja










5

46 Diagram 28 shows an automatic switch circuit to light up a

bulb at night.

Rajah 28 menunjukkan litar suis autoinatik untuk

menyalakan mentol pada waktu malam .

What changes should be done to light up the bulb during

the day time?

Apakah perubahan yang perlu dilakukan untu

menyalakan mentol pada waktu siang?

[A] Reverse the terminals of the battery

Songsangkan terminal bateri

[B] Interchange R1 and R2

Tukar antara R1 dan R2

[C] Replace the npn transistor with a pnp transistor

Ganti transistor npn dengan transistor pnp

[D] Replace resistor R3 with a resistor of lower

resislance

Ganti perintang R3 dengan perintang yang lebih

rendah rintangan

47 Diagram 29 shows a logic gate circuit.

Rajah 29 menunjukkan satu litar get logik.

Which of the following truth tables represents output R in

the circuit?

Antara jadual kebenaran berikut, yang manakahmewakili output R bagi litar itu?

SPM 2008

44 Diagram 27 shows a cathode being heated by a filament.

Rajah 27 menunjukkan satu katod yang dipanaskan oleh

satu filamen.

Which particle is emitted from the cathode?

Zarah manakah yang dipancarkan dari katod?

[A] Proton [B] Neutron

Proton Neutron

[C] Electron [D] Alpha

Elektron Alfa

45 Diagram 28 shows an electric circuit which contains 4

identical bulbs, W, X, Y and Z. Three of the bulbs light up

continuously.

Rajah 28 menunjukkan litar elektrik yang mengandungi 4

buah mentol, serupa.W X, Y dan Z yang tiga daripada

mentol-mentol itu menyala berteru.san.

Which bulbs light up continuously?

Mentol-mentol manakah yang menyala berterusan?

[A] W, Y, Z [B] W, X, Z

[C] X, W, Y [D] X, Y, Z

46 Which statement about a transistor is correct?

Pernyataan manakah yang betul mengenai suatu

transistor?

[A] Has two electrodes

Mempurnyai dua elektrod

[B] Acts as a full wave rectifier

Berfungsi sebagai rektifier gelombang penuh

[C] Has its own internal energy supply

Mempunyai bekalan tenaga dalam sendiri

[D] Functions as an amplifier

Berfungsi sebagai amplffier










6

47 Diagram 29 shows a combination of two logic gates.

Rajah 29 mempunyai satu kombinasi dua get logik.

Which truth table is correct?

Jadual kebenaran manakah yang betul?

SPM 2009

44 Diagrarn 26 shows an audio signal generator connected

to a cathode ray oscilloscope, CRO.

Rajah26 menunjukkan suatu penjana isyarat audio

disambungkan ke,osiloskop sinar katod, OSK .

Which signal shows the loudest and the highest pitched

audio signal?

Isyarat manakah yang menunjukkan isyarat audio yang,

paling kuat dan paling langsing?

45 Diagram 27 shows a full wave rectifier circuit.

Rajah 27 menunjukkan suatu litar rektifikasi gelombang

penuh.

The output wave form is smoothen because .

Gelombang output yang terbentuk diratakan kerana

[A] the resistant of the resistor is always increasing and

decreasing

rintangan perintang sentiasa bertambah dan

berkurang

[B] the charges in the capacitor is always increasing

and decreasing

cas dalam kapasitor sentiasa bertambah dan

berkurang

[C] the number of electrons in the CRO is always

increasing and decreasing

bilangan elekton dalam OSK sentiasa bertambah

dan berkurang [D] the current flows through the diode is always

increasing and decreasing

arus yang mengalir melalui diod sentiasa

bertambah dan berkurang










7

46 Diagram 28 shows a p-n junction diode.

Rajah 28 menunjukkan satu diod simpang p-n.

When the diode is in reverse biased, the depletion layer

widens because

Apabila diod disambung secara pincang songsang,

lapisan susutan menjadi lebar kerana

[A] the electrons and holes are pulled away from the

p-n junction

elektron dan lohong ditarik menjauhi simpang p-n

[B] the electrons from the n-type are pulled across the

p-n junction

elektron dari jenis-n d.itarik merentasi simpang p-n

[C] the negative charges flow from the negative

terminnal to the p-type.

semiconductor cas negatif mengalir darl terrninal

negatif ke semikonduktor jenis-p

[D] the positive charges flow from the positive terminal

to the n-type semiconductor

cas positif mengalir dnri terminal positif ke

semikonduktor jenis-n

47 Diagram 29 shows a logic gate circuit with input signals P

and Q.

Rajah29 menunjukkan litar get logik dengan isyarat input P d.an Q.

Which diagram shows the correct shape of the output

signal?

Rajah manakah yang menuijukkan bentuk yang betul

bagi isyarat output?

SPM 2010

47 Diagram 37 shows a system for the transmission of

electricity.

Rajah 37 menunjukkan satu sistem penghantaran

elektrik.

Which combination of the primary and secondary coils of

transformers P and Q is correct?

Kombinasi gegelung primer dan sekunder yang manakah

betul bagi transformer P dan Q?





Chapter 09 - Electronics

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