136 Electrical Engg. Paper-II FCI 17-11-2013 C SERIES Engistan.com

7/23/2019 136 Electrical Engg. Paper-II FCI 17-11-2013 C SERIES Engistan.com

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SERIES C

PAPER II

ELECTRICAL ENGINEERING

Number ofQuestions

Timing Subject Code

120

(121 to 240)

11:35 Hrs.

To

13:05 Hrs.136

DO NOT OPEN

BEFORE

11:35 AM

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ECL-136 [C17]

,

121. The presence of dc link inductance in line commutated

thyristor converters effectively leads to:

(1) Increase in output dc voltage

(2) Reduction in the load current ripples

(3) Increase in the load current ripple

(4) Reduction in output dc voltage

121. ykbu fnd~ifjofrZr FkkbfjLVj ifjorZ dks es Mh-lh- fyad sjdRo dh

mifLFkfr Hkkfor djrh gS%

(1) fuxZe Mh-lh- oksYVrk esa o`f)(2) Hkkj /kkjk feZdkvksaesadeh(3) Hkkj /kkjk feZdk esao`f)(4) fuxZe Mh-lh- oksYVrk esa deh

122. The pulse width modulation technique is used in:

(1) Cycloconverter

(2) Line commutated inverter

(3) ac voltage controller

(4) Voltage source inverter

122. Lin foLrkj ekMyu rduhd bue l fdle ;kx dh tkrh g%

(1) lkbDyksifjorZd(2) ykbu fnd~ifjofrZr rhid(3) ,-lh- oksYVrk fu;U=d(4) oksYVrk lzksr rhid

123. In medium power rating voltage source inverter, the

best device to be used is:

(1) Thyristor

(2) Triac

(3) IGBT

(4) MOSFET

123. ,d e/;e kf fu/kkZfjr oksYVrk lzksr rhid es ;ksx dh tkusokyh

loZJsB ;qf gS%

(1) FkkbfjLVj(2) Triac

(3) IGBT

(4) MOSFET

124. In a 3-phase phase ac system, any unbalanced load

can be converted to:(1) Balanced load using inductors

(2) Balanced load using capacitors

(3) Balanced load using resistors and capacitors

(4) Balanced load using inductors and capacitors

124. rhu Qst okys ,-lh- flLVe es dksbZ Hkh vlUrqfyr Hkkj bues ls

fdles ifjofrZr fd;k tk ldrk gS%

(1) sjdksadk ;ksx djrsgq, larqfyr Hkkj(2) la/kkfj=ksa dk ;ksx djrs gq, larqfyr Hkkj(3) frjks/kdksarFkk la/kkfj=ksa dk ;ksx djrs gq, larqfyr Hkkj(4) sjdksarFkk la/kkfj=ksadk ;ksx djrsgq, larqfyr Hkkj

125. The creeping is observed in:

(1) Ammeter meter (2) Wattmeter

(3) Energy meter (4) Voltmeter

125. foliZ.k f;k bues ls fdles ns[kh tkrh gS%

(1) ,sehVj ehVj (2) okVehVj(3) tkZehVj (4) oksYVehVj

126. The negative feedback in a control system offers:

(1) Always stable system

(2) Always unstable system

(3) Oscillatory system

(4) Conditionally stable system

126. fdlh fu;U=.k rU= es _.kkRed iqufuZosk nku djrk gS%

(1) lnSo fLFkj rU=(2) lnSo vfLFkj rU=

(3) nksyu rU=(4) frcfU/kr LFkk;h rU=

127. 3-phase AC system is preferred compared to single-

phase AC system because of:

(1) High number of conductors

(2) Easy control

(3) High efficiency

(4) Smaller number of components

127. ,dy Qst ,-lh flLVe dh rqyuk es 3&Qst ,-lh- flLVe dks

kFkfedrk feyus dk dkj.k bues ls D;k gS%

(1) pkydksa dh vf/kd la[;k(2) lgt fu;U=.k(3) mPp n{krk(4) vo;oksadh de la[;k

128. The earthing transformer is used:

(1) To avoid the harmonics in the transformers

(2) To provide artificial neutral earthing where the neutral

points of the 3phase system are not accessible

(3) To improve the current capacity of neutral(4) To increase the neutral current to ground in case of

fault

128. HkwlEidZu VkUlQkeZj dk ;ksx fd;k tkrk gS%

(1) VkUlQkeZjksa esagkeksZfud lscpusds fy,(2)tgk ij rhu Qst flLVe ds U;wVy IokbV vfHkxE; u gksa ogka

ij f=e U;wVy fLopu miyC/k djkusds fy,(3) U;wVy dh /kkjk {kerk esalq/kkj ykusdsfy,(4) nksk dh fLFkfr esaU;wVy /kkjk dksHkwfe rd c


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130. The size of a feeder is determined primarily by:

(1) The current it is to carry

(2) The percentage variation of voltage in the feeder

(3) The voltage across the feeder

(4) The distance over which the transmission is made

130. nk;d dk vkdkj e[kr% bue l fdld }kjk fu/kkfjr fd;k tkrk g%

(1) /kkjk tks mls ogu djuh gS(2)nk;d esaoksYVrk dh frkr fofHkUurk(3) nk;d ds ikj oksYVrk(4) nwjh ftldsij lapkj.k fd;k x;k gS

131. The bundle conductors are preferred in EHV

transmission lines because:

(1) It is easy to fabricate thin conductors and combine

them to make a bundle conductor

(2) Overall inductance of the line is reduced and corona

loss are minimum

(3) Height of the tower is reduced and hence cheap

transmission lines

(4) There is no sag in the transmission line when bundle

conductors are used

131. EHV lapj.k ykbuks es caMy pkydks dks kFkfedrk nh tkrh gS

D;ksfd%

(1) irys pkydksa dks cukuk rFkk ,d caMy pkyd cukus ds fy,mUgsatksM+uk vklku gksrk gS

(2) ykbu dk ldy sjdRo de gks tkrk gS rFkk dksjksuk {kfrU;wure gksrh gS

(3) VkWoj dh pkbZde gks tkrh gS rFkk bl dkj.k lapkj.k ykbuslLrh gksrh gSa

(4) tc caMy pkydksadk ;ksx fd;k tkrk gSrkslapkj.k ykbu esadksbZ>ksy ughajgrk gS

132. The maximum efficiency of a 3phase transformer will

occur at a loading at which:

(1) There are no iron losses and copper losses

(2) Iron losses are 3 times the copper losses

(3) When the voltage on primary and secondary terminals

is rated value and the currents are in proportion of 3:1

in secondary and primary sides

(4) When the iron losses are equal to the copper losses

132. fdlh 3&Qst VkUlQkeZj dh vf/kdre n{krk ml Hkkj.k ij gksrh gS

ftl ij%

(1) dksbZykSg {kfr rFkk rkez{kfr ugha gksrh gS(2)

rkez{kfr dh3

xquk ykSg {kfr gksrh gS(3) tc kFkfed vkSj ek/;fed vUrLFkksa ij oksYVrk dk ewY;kadufd;k tkrk gSrFkk /kkjk,a ek/;fed rFkk kFkfed lkbMksaesa3:1dslekuqikr esa gksrh gS

(4) tc ykSg {kfr rkez {kfr dscjkcj gksrh gS

133. Harmonic restraint in differential protection for

transformers is provided to prevent mal-operation

caused due to:

(1) Magnetizing in-rush current(2) Unmatched CT current imbalance(3) Demagnetizing flux(4) Voltage imbalance during faults as detected by

V Ts connected

133. VkUlQkeZjks ds fy, Hksnpkfyr j{k.k es gkeksfud fujks/k fuEukafdr es

ls fdlds dkj.k gksus okys dqpkyu dks jksdus ds fy, miyC/k djk;k

tkrk gS%

(1) pqEcdu vUr%/kkjk(2) xSj&lqesfyr CT/kkjk vlUrqyu(3) vpqEcdu vfHkokg(4) lEc) VTs}kjk [kkstsx, nkskksdsnkSjku oksYVrk vlUrqyu

134. The rotor slots are usually given a slight skew in the

squirrel cage induction motor:

(1) To increase the tensile strength of the rotor bars at

high speed

(2) To reduce the locking tendency of the rotor and

reduce hum

(3) To prevent rotating in the reverse direction

(4) To save copper used and is easier and economical to

fabricate

134.fiatjh sj.k eksVj es ?kw.kZd LykVks dks lkekU;r% gYdk Vs


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137. Thyristor is a:

(1) Current operated device

(2) Voltage operated device

(3) Power operated device

(4) All the above

137. FkkbZfjLVj gS%

(1) /kkjk pkfyr ;qf(2) oksYVrk pkfyr ;qf(3) kf pkfyr ;qf(4) mi;qZ lHkh

138. The inverse time characteristics, out of the

characteristics shown below is:

(1) 1 (2) 2

(3) 3 (4) 4

138. uhps nkkZ;h xbZ vfHky{kf.kdrkvks es ls foykse le; vfHky{kf.kdrk,a

gS%

(1) 1 (2) 2

(3) 3 (4) 4

139. Protection scheme of a motor feeder consists of an

inverse time relay with following characteristics:

Plug Setting Multiplier 2 5 10

Time in seconds 10 4.3 3If the CT ratio is 200/1, adopted plug setting is 0.8 Amp

and Time Multiplier setting is 0.2, then for a fault current

of 1600 Amps, the operating time of relay will be:

(1) 4.3 sec (2) 3.0 sec

(3) 0.6 sec (4) 0.3 sec

139. fdlh eksVj QhMj dh j{k.k ;kstuk fuEukafdr vfHky{kf.kdrkvks lfgr

foykse le; fjys j[krh gS%

Iyx lsfVax eYVhIyk;j 2 5 10

lsds.M~l es le;

10 4.3 3;fn CTvuqikr 200/1gS yh xbZ Iyx lS fVax 0.8,fEi;j gS rFkk

eYVhIyk;j lSfVax le; 0.2gS rks 1600,fEi;j dh nksk /kkjk ds

fy, fjys dk pkyu gksxk%

(1) 4.3lsds.M (2) 3.0lsds.M(3) 0.6lsds.M (4) 0.3lsds.M

140. When the generator stator neutral is earthed through a

distribution transformer, the earth fault protection is

operative through:

(1) An under-voltage relay connected across thesecondary of the transformer

(2) An over-voltage relay connected across the secondary

of the transformer(3) An over-current relay connected in the transformersecondary

(4) Distance relay set to protect 90% phase winding of thegenerator

140. tc forj.k VkUlQkeZj ds ek/;e ls tfu= LVsVj U;wVy dks

HkwlEifdZr fd;k tkrk gS rks HkwlEidZu nksk j{k.k bues ls fdlds }kjk

pkfyr gksxk%

(1) VkUlQkeZj dsf}rh;d dsikj ,d vo&oksYVrk fjysla;ksftr gS(2) VkUlQkeZj dsf}rh;d dsikj ,d vfr&oksYVrk fjysla;ksftr gS(3) VkUlQkeZj dsf}rh;d esa,d vfr oksYVrk fjysla;ksftr gS(4)tfu= dh 90%Qst dqaMyh ds j{k.k ds fy, nwj fjyslsV

141. The short-circuit secondary current of the transformer

with 4% reactance during normal operations would be:

(1) 25 times the rated current




141. lkekU; pkyu ds nkSjku 4%fr?kkr lfgr VkUlQkeZ j dh y?kqiFk

f}rh;d /kkjk gksxh%

(1) fu/kkZfjr /kkjk dk 25xquk(2) fu/kkZfjr /kkjk dk 40xquk(3) fu/kkZfjr /kkjk dk 400xquk(4) fu/kkZfjr /kkjk dk 250xquk

142. If the charging reactance of a line of 100 km length is

750 , then what will be the charging reactance for 50

km length of the line?

(1) 1500 (2) 750

(3) 3000 (4) 375

142. ;fn 100 kmyEch ykbu dk vkos ku fr?kkr 750 gS rks 50

fdyksehVj yEch ykbu ds fy, vkosku fr?kkr D;k gksxk%

(1) 1500 (2) 750

(3) 3000 (4) 375

143. At resonance in a parallel RLC circuit, the source

current and the inductor current are:

(1) In phase

(2) 45 degrees out of phase



143. lekukUrj RLC ifjiFk es vuq ukn ij lzksr /kkjk vkSj sjd /kkjk

dgk ij gS\

(1) Qst esa(2) Qst dsckgj 45fMxzh(3) Qst dsckgj 90fMxzh(4) Qst dsckgj 180fMxzh

ECL-136 [C19]

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144. The knee point of a current transformer is defined as:

(1) 10% increase in excitation voltage results in 50%

increase in magnetising current

(2) 50% increase in excitation voltage results in 10%


(3) 10% decrease in excitation voltage results in 25%


(4) 50% increase in excitation voltage results in no

change in magnetising current

144. fdlh /kkjk VkUlQkeZj ds tkuq fcUnq dks bues lsfdl dkj ifjHkkfkr

fd;k tkrk gS%

(1)mkstu oksYVrk esa 10%o`f) dk ifj.kke pqEcdu /kkjk esa50%o`f) gksrh gS

(2)mkstu oksYVrk esa 50%o`f) dk ifj.kke pqEcdu /kkjk esa10%o`f) gksrh gS

(3)mkstu oksYVrk esa10%gkzl dk ifj.kke pqEcdu /kkjk esa25%

o`f) gksrh gS(4) mkstu oksYVrk esa50%o`f) dsifj.kke Lo:i pqEcdu /kkjk esadksbZifjorZu ughagksrk

145. One kilowatt-hour of electrical energy is the same as:

(1) 36x105erg (2) 36x10

6B.T.U.

(3) 36x105C.H.U. (4) 36x10

5joule

145. ,d fdyksokV fr?kUVk dh fo|qr tkZ bues ls fdlds cjkcj gS%

(1) 36x105erg (2) 36x10

6B.T.U.

(3) 36x105C.H.U. (4) 36x10

5twy

146. Which of the following material is not used as fuse

material:

(1) Aluminum (2) Tin

(3) Lead (4) Carbon

146. fuEukafdr es ls fdl inkFkZdk ;ks x ;wt inkFkZ ds :i es ugha

fd;k tkrk gS%

(1) vY;qfefu;e (2) fVu(3) lhlk (4) dkcZu

147. Which of the following material is NOT a semiconductor?

(1) Silica (2) Germanium(3) Selenium (4) GalliumArsenide

147. ,d xR;kRed Le`fr vkdM+ks dk HkaMkj.k fdles djrh gS%

(1)myV iyV (2) bUMDVlZ(3) /kkfjrk (4) frjks/kd

148. The driving point impedance for the network shown

below is:

(1) 0.25 (2) 0.50

(3) 0.75 (4) 1.0

148. uhps nf'kZr usVodZ ds fy, Mkbfoax IokbV frck/kk gksxh%

(1) 0.25 (2) 0.50

(3) 0.75 (4) 1.0

149. The resonance frequency for the network shown

below is:

(1)

1 (2)

2

1

(3)4

1 (4)

4

149. uhps nf'kZr usVodZ dh vuqukn vko`fk fdruh gksxh\

(1)

1 (2)

2

1

(3)4

1 (4)

4

150. Neutral Displacement voltage occurs in:

(1) Unbalanced delta connected loads.

(2) Unbalanced star connected loads with neutral grounded

(3) Balanced star connected loads with neutral grounded.

(4) Unbalanced star connected loads with ungrounded neutral

150. fuHkkou foLFkkiu okYVrk fuEu e l fdle ikb tkrh ?kfVr gkrh g\

(1)vlarqfyr f=dks.k MsYVk ;ksftr Hkkj yksM esa(2) U;wVy HkwlaifdZr ls vlarqfyr rkjk la;ksftr Hkkj(3) U;wVy HkwlaifdZr ls larqfyr rkjk la;ksftr Hkkj(4) vHkwlaifdZr U;wVy ls vlarqfyr rkjk la;ksftr Hkkj

151. Which of the following is INCORRECT about semi

conductors:

(1) The donor energy level lies close to the bottom of

conduction band in ntype semiconductor.

(2) The holes in the valance band have negative effective

mass.

(3) The energy levels inside a band are quasicontinuous

and equally spaced

(4) The density of states at energy E near the bottom

conduction band (Ec) can be regarded to vary as

( ) 2/1cEE

151. v/kZpkydks dslaca/k es dkSu&lk dFku xyr gS\

(1),u Js.kh dsv/kZpkydksaesa pkyu cSaM dsv/kLFky dsfudV nkrktkZ ry gksrk gS

(2)la;kstdrk cSaM dsfNksa esa_.kkRed Hkkoh O;eku gksrk gS(3) cSaM ds vUrxZr tkZ ry larrdYi DoklhdkfUVuqvl ,oa

leku vUrjkodk'kh gS(4) v/kLFky pkyu cSaM EC ds fudV tkZ E ij voLFkk ds

?kuRo density of states dks ds:i esaifjordgk tk ldrk gS

( ) 2/1cEE

ECL-136 [C20]

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ECL-136 [C21]

152. Thermal effect is used for producing deflecting torque

is:

(1) Voltmeter (2) Ammeter

(3) Wattmeter (4) Energy meter

152. fo{ksid cy vk?kw.kZ mRiUu djus ds fy, ;q rkih; Hkko dksD;k

dgrs gS%

(1) oksYVekih (2) ,sehVj(3) okVekih (4)tkZekih

153. For increasing the range of voltmeter, one should connect a:

(1) High value resistance in series with voltmeter

(2) Low value resistance in series with voltmeter

(3) High value resistance in parallel with voltmeter

(4) Low value resistance in parallel with voltmeter

153. oksYVekih dk ifjlj c


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161. A DC shunt motor is running at 1200 rpm, when

excited with 220V dc. Neglecting the losses and

saturation, the speed of the motor when connected to

a 175 V supply is:

(1) 70 rpm

(2) 900 rpm

(3) 1050 rpm

(4) 1200 rpm

161. tc 220 V dcij ,d dc'kaV eksVj dks mksftr fd;k tkrk gS og

1200 rpmij pyrh gSA gkfu;ks vkSj lar`fIr;ks dh vuns[kh djrs

gq, tc eksVj dks 175 Vnk; ij la ;ksftr fd;k tkrk gS rc eksVj

dh pky fdruh rpmgksxh\

(1) 70 rpm

(2) 900 rpm

(3) 1050 rpm

(4) 1200 rpm162. Distribution transformers have core losses:

(1) More than full load copper losses

(2) Equal to full load copper losses

(3) Less than full load copper losses

(4) Negligible compared to full load copper losses.

162. forj.k ifj.kkfe= es fdruh ksM gkfu gksrh gS\

(1) iw.kZHkkj rkez gkfu;ksa lsvf/kd(2) iw.kZ Hkkj rkezgkfu;ksadscjkcj(3) iw.kZHkkj rkez gkfu;ksa lsde(4) iw.kZ Hkkj rkezgkfu;ksadh rqyuk esaux.;

163. Hollow conductors are used in the transmission lines to:

(1) Improve heat dissipation

(2) Reduce corona loss

(3) Reduce skin effect

(4) Reduce the line inductance

163. lapkj.k ykbuks es [kks[kys pkyd D;ks ;ksx fd, tkrs gS\

(1) "ek folj.k fodh.kZu dkslq/kkjusdsfy,(2) dksjksuk gkfu dksde djusds fy,(3) Rokfpd Hkko dksde djusdsfy,(4) ykbu sjdRo dksde djusdsfy,

164. For the grounding of an entire substation:(1) Counterpoises are used

(2) Grounding rods are used

(3) Grounding mats are used

(4) Peterson coil is used

164.laiw.kZ lc&LVs'ku dsHkw &laidZu ds fy,%(1) frrksy ;ksx fd, tkrs gSa(2) Hkw&laidZu NM+ ;ksx fd, tkrs gSa(3) Hkw&laidZu eSV ;ksx fd, tkrs gSa(4)ihVjlu dqaMyh ;ksx dh tkrh gS

165. A semiconductor is electrically neutral because it has:

(1) No majority carrier

(2) No minority carrier

(3) No free charges

(4) Equal number of negative and positive charges.

165. v/kZpkyd fo|qrh; :i ls U;wVy gksrs gS D;ksfd bles%

(1) cgqla[;d okgd ughagksrs gSa(2) vYila[;d okgd ugha gksrs gSa(3) eq vkos'kh ughagS(4)cjkcj la[;k esa_.kkRed vkSj /kukRed vkos'kh gSa

166. A circuit requires a capacitor of 100f, 25V. The

capacitor can be:

(1) Paper capacitor

(2) Electrolytic capacitor

(3) Ceramic capacitor

(4) Any type of capacitor

166. fdlh ifjiFk dks 100f, 25Vds la/kkfj= dh vko';drk gksrh gSA

la/kkfj= fdl dkj dk gksldrk gS%

(1)dkxt la/kkfj=(2) fo|qr vi?kVuh la/kkfj=(3) fljsfed la/kkfj=(4) fdlh Hkh dkj dk la/kkfj=

167. The purpose of a coupling capacitor in an amplifier is to:

(1) Control the output

(2) Provide impedance matching

(3) Provide DC isolation between amplifier and load

(4) Increase the bandwidth

167. fdlh o/kZd es la/kkfj=ks ds ;qXeu dk ms';%

(1)vkmViqV fuxZe ij fu;a=.k djuk(2) frck/kk lqesyu nku djuk gS(3)o/kZd vkSj yksM ds chp dcfo;kstu nku djuk gS(4) cSaM&foLrkj c


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ECL-136 [C23]

170. An SCR is turned off when:

(1) Gate voltage is reduced to zero

(2) Gate current is reduced below holding current

(3) Anode current is reduced below latching current

(4) Anode current is reduced below holding current

170. SCRdks dc can dj fn;k tkrk gS\

(1)tc xsV }kj oksYVrk dksde dj 'kwU; fd;k tkrk gS(2)tc xsV /kkjk dks?kVkdj /kkj.k /kkjk ls de fd;k tkrk gS(3)tc ,suksM /kkjk dks ?kVkdj flVduh latching /kkjk ls de

fd;k tkrk gS(4)tc ,suksM /kkjk dks ?kVkdj /kkj.k /kkjk ls de fd;k tkrk gS

171. A chopper is connected in parallel with a fixed

resistance to control the speed of slip ring induction

motor. The motor speed increases as:

(1) The chopper duty cycle decreases

(2) The chopper duty cycle increases

(3) The chopper frequency increases

(4) The chopper frequency decreases

171. li oy; sj.k eksVj dh pky dks fu;af=r djus ds fy, fu;r

frjks/k lfgr ladr dks ik'oZ es la;ksftr fd;k tkrk gS] crkb, fd

eksVj LihM fdl :i es c


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180. A 3-phase delta connected motor is supplied at a line

voltage of 400 V, the voltage across each winding of

the motor will be:

(1) 400 V (2) 200 V

(3) 100 V (4) 300 V

180. ,d f=dyk MsYVk vkc) eksVj dks 400 Vdh ykbZu oksYVrk vkiwfrZ

dh tkrh gS] eksVj ds R;sd okbZfUMax dsvkj&ikj oksYVrk gksxh%

(1) 400 V (2) 200 V

(3) 100 V (4) 300 V

181. Maxwell Bridge is used for the measurement of:

(1) Frequency (2) Inductance

(3) Resistance (4) Capacitance

181. eSDlosy lsrq fdlds ekiu es ;q gksrk gS%

(1) vko`fk (2) sj.k(3) frjks/k (4) /kkfj=

182. In a star- star connected transformer:

(1) Line voltage is equal to phase voltage

(2) Line voltage is equal to 3 phase voltage

(3) There is no line current

(4) There flows no phase current

182. ,d rkjk&rkjk vkc) VkUlQkeZj es%

(1) ykbZu oksYVrk Qst oksYVrk ds cjkcj gksrk gS(2)ykbZu oksYVrk 3Qst oksYVrk ds cjkcj gksrk gS(3) dksbZHkh ykbZu /kkjk ugha gksrh gS(4) dksbZHkh dyk /kkjk dk cgko ughagksrk gS

183. A synchronous motor working on leading power factor

and not driving any mechanical is known as:

(1) Synchronous induction motor (2) Spinning motor

(3) Synchronous condenser (4) None of these

183. ,d rqY;dkfyd eksVj tks fd vxzkf xq.kd ij dk;Z dj jgh gS

,oa dksbZ ;kaf=dh ughs pyk jgh gS] mlstkuk tkrk gS%

(1) rqY;dkfyd sj.k eksVj (2) fLifuax eksVj(3) rqY;dkfyd daMsUlj (4) buesa ls dksbZugha

184. A 6 pole Lap wound dc generator has 300 conductors.

Emf induced per conductor is 5 volt. This generator

will generate emf of:

(1) 60 volt (2) 300 volt

(3) 250 volt (4) 1800 volt

184. ,d 6/kzo okyh yS i okmUM dctfu= es 300pkyd gSA fr pkyd

es sfjr

emf 5oksYV gSA ;g tfu=

emfmRi djs xk%

(1) 60oksYV (2) 300oksYV(3) 250oksYV (4) 1800oksYV

185. In a 3-phase induction motor, maximum torque is

obtained at starting if:

(1) Rotor resistance = Rotor reactance

(2) Rotor resistance < Rotor reactance

(3) Rotor resistance >Rotor reactance

(4) Rotor resistance = Stator reactance

185. ,d f=dyk sj.k eksVj es kjaHku ij vf/kdre cy vk?kw.kZ kIr gksrk

gS ;fn

(1) jksVj frjks/k =jksVj fr?kkr(2) jksVj frjks/k jksVj fr?kkr(4) jksVj frjks/k =LVsVj fr?kkr

186. Ferranti effect in a transmission leads to which of the

following conclusion:(1) Receiving end voltage is less than sending end voltage

(2) Receiving end voltage is equal to sending end voltage

(3) Receiving end voltage is more than sending end voltage

(4) Receiving end voltage is equal to half of sending end voltage

186. lapj.k es QsjkUrh Hkko fdl fudkZdh vksj ys tkrk gS%

(1) xzkgh Nksj oksYVrk sfkr Nksj oksYVrk lsde gS(2)sfkr Nksj oksYVrk xzkgh Nksj oksYVrk dscjkcj gS(3) xzkgh Nksj oksYVrk sfkr Nksj oksYVrk lsvf/kd gS(4) xzkgh Nksj oksYVrk sfkr Nksj oksYVrk dsvk/ks dscjkcj gS

187. In the figure A and B are two semiconductor diodes.

Which of the following statement is true:

(1) A and B are forward biased

(2) A is forward biased and B is reverse biased

(3) A and B are reverse biased

(4) A is reverse biased and B is forward biased

187. fp= es A,oa Bnks v/kZpkyd Mk;ksM gSA

fuEufyf[kr es ls dkSu&lk dFku lR; gS%

(1)A,oa BvxzvfHkufr esa(2)AvxzvfHkufr gS ,oaBO;qReh; vfHkufr gS(3)A,oa BO;qReh; vfHkufr gSa(4) AO;qReh; vfHkufr gS,oaBvxz vfHkufr gS

188. Supply voltage V in the figure is.

(1) 210V (2) 70V

(3) 50V (4) 230V

188. fp= es vkiwfrZ oksYVrk VgS A

(1) 210V (2) 70V

(3) 50V (4) 230V

ECL-136 [C24]

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10/16

189. Please refer figure showing oil pot with electrodes

used for testing dielectric strength of transformer oil.

The gap between two electrodes is 4 mm and the pot

is filled with oil.

The pot is placed in the oil testing kit and it is

observed that breakdown occurs at 16KV. The

dielectric strength of oil is:

(1) 16KV/cm (2) 20 KV/cm

(3) 40KV/cm (4) 50KV/cm

189. fuEufyf[kr lanfHkZr fp= es VkUlQkeZj rsy dh ijkoS|qr lkeF;Z

ijh{k.k gsrq ;q bysDVkM lfgr rsy dk crZu nkkZ;k x;k gSA nks

bysDVkWM ds e/; vUrjky gS 4 mm,oa crZu rsy ls Hkjk gqvk gSA

crZu dks rsy ijh{k.k fdV es Mkyk tkrk gS ,oa ;g voyksfdr fd;k

tkrk gS fd czd Mkmu 16 KVij ?kfVr gksrk gSA rsy dk ijkoS|qr

lkeF;Z gksxk%

(1) 16KV/cm (2) 20 KV/cm

(3) 40KV/cm (4) 50KV/cm

190. Three equal resistances, each of 6 are connected in

star, their corresponding value of each resistance in

delta connection will be:

(1) 2 (2) 12

(3) 18 (4) None of these

190. ,d rhu cjkcj frjks/k R;sd 6 okys rkjs es vkc) gSA MsYVk

vkc) es R;sd frjks/k dk lerqY; eku gksxk%

(1) 2 (2) 12

(3) 18 (4) buesa ls dksbZugha

191. In a transformer copper losses at full-load and unity

power factor are 800 W. The copper losses at full load

and at 0.8 power factor lagging will be:

(1) 400 W (2) 640 W

(3) 800 W (4) 200 W

191. VkUlQkeZj es iw.kZ Hkkj ij rkez {kfr ,oa ,dd kf xq.kd 800 W

gSA iw.kZ Hkkj ij rkez {kfr ,oa 0.8ip kf xq.kd gksxk%

(1) 400 W (2) 640 W

(3) 800 W (4) 200 W

192. A dc shunt generator, whose generated emf is 220 V is

supplying a load at 210 V. If the resistance of the

armature circuit is 0.5 , the armature current will be:

(1) 220 A (2) 105 A

(3) 20 A (4) None of these

192. ,d dc ikoZ iFk tfu= ftldh tfur emf 220 oks YV gS] 210

oksYV ij dh Hkkj vkiwfrZ dj jgh gSA ;fn vkespj ifjiFk dk frjks/k

0.5

gS] rks vkespj /kkjk gksxh%

(1) 220 A (2) 105 A

(3) 20 A (4) buesa ls dksbZugha

193. In a balanced 3 supply system, the vector sum of the

three-phase emfs at any instant is equal to:

(1) Phase voltage

(2) Line voltage

(3) Zero

(4) Maximum value

193. ,d larqfyr 3

vkiwfrZ es fdlh dky ij f=dyk emfdk lfnk

;ksx gksrk gS%

(1) dyk oksYVrk dscjkcj(2) ykbZu oksYVrk dscjkcj(3) kwU; dscjkcj(4) vf/kdre eku dscjkcj

194. A three-Phase synchronous motor has been provided

with damper winding. It can be started as a:

(1) Single-phase synchronous motor

(2) Three-phase squirrel cage induction motor

(3) Single-phase induction motor

(4) Three-phase alternator

194. ,d f=dyk rqY;dkfyd eksVj es voeUnu okbZfUMax nku fd;k x;k

gSA ;g kjEHk fd;k tk ldrk gS%

(1) ,dy dyk rqY;dkfyd eksVj(2) f=dyk fiatjh sj.k eksVj(3) ,dy dyk sj.k eksVj(4) f=dyk vYVjusVj

195. The iron losses in a 100 kvA transformer are 1 kw andthe full load copper losses are 2 kw, then maximum

efficiency occurs at a load of:

(1) 1002 kvA (2) 100/2

(3) 50 kvA (4) None of these

195. 100 kvAVkUlQkeZj es ykSg gkfu

1 kwgS ,oa iw.kZ Hkkj rkez gkfu2 kwgS] rks vf/kdre n{krk fdl Hkkj ?kfVr gksxh%

(1) 1002 kvA (2) 100/2

(3) 50 kvA (4) buesa ls dksbZugha

196. If there are repeated roots of the characteristic

equation on the jaxis, the system would be:

(1) Conditionally stable

(2) Oscillatory

(3) Stable

(4) Unstable

196. ;fn j

v{k ij vfHky{k.k lehdj.k iqujkofrZr ewy gksrs gS] ,slh

iz.kkyh gksxh%

(1) izfrcaf/kr :i ls fLFkj(2) nksyu(3) fLFkj(4) vfLFkj

ECL-136 [C25]

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11/16

197. For a feedback system having the characteristic

equation:

,0)2s)(1s(s

K1

=

The angles of the straight line asymptotes of the root

locus with the real axis, are given by

(1) 30

, 90

, 180

(2) 30

, 180

, 300

(3) 60, 180, 300 (4) 30, 60, 120

197. ,0)2s)(1s(s

K1

=

mi;qDr vfHky{k.k lehdj.k ls ;qDr QhMcSd iz.kkyh ds fy,

okLrfod v{k ds izfr ewy fcanqiFk ds lh/kh js[kk vuarLifkZ;ks dsdks.k

fuEu }kjk izkIr gksrs gS%

(1) 30, 90, 180 (2) 30, 180, 300

(3) 60, 180, 300 (4) 30, 60, 120

198. The transfer function of a compensating network is

given as:

ps

zs)s(Gc

=

When pz , the network is called the

(1) Phaselag network

(2) Phaselead network

(3) Phase laglead network

(4) Phase shifting network

198. ,d izfrdkjh usVodZ dk varj.k Qyu fuEu :i es fn;k x;k gS%

ps

zs)s(Gc

=

tc pz ] usVodZdgykrk gS(1)dyk&iprk usVodZ(2) dyk&vxzrk usVodZ(3)dy iprk&vxzrk usVodZ(4)dyk&foLFkkiudkjh usVodZ

199. The expression given below is the impulse response

of a feedback control system c(t)=e0.6t

sin 0.8t. The

damping ratio and natural frequency of oscillationsare, respectively, given by:

(1) 0.6,1 rad/sec (2) 0.8, 0.6 rad/sec

(3) 1, 0.6 rad/sec (4) 1, 0.8 rad/sec

199. uhps nh xbZ vfHkO;fDr QhMcSd fu;a=.k iz.kkyh c(t)=e0.6t

sin 0.8t

dh ,d vkosxh vfHkf;k gSA nksyuks dk eanu vuqikr vkSj izkd`frd

vko`fRr ek% fuEu ls izkIr gksrh gS%

(1) 0.6,1 rad/sec (2) 0.8, 0.6 rad/sec

(3) 1, 0.6 rad/sec (4) 1, 0.8 rad/sec

200. A first order instrument has a time constant of 50 sec.

It is subjected to a sinusoidal input cycling at 0.002Hz.

The time lag will now be:

(1) 500 sec (2) 50 sec

(3) 44.6 sec (4) 1 msec

200. izFke Js.kh ds vkStkj es dkykad 50 lsdaM gksrk gSA bls 0.002Hz ij

,d T;koh; bUiqV lkbdfyax ds v/khu j[kk tkrk gSA vc dky

iprk gksxh%

(1) 500lsdaM (2) 50lsdaM(3) 44.6lsdaM (4) 1m-lsdaM

201. FET is advantageous in comparison with BJT because

of its:

(1) High input impedance(2) High noise

(3) High gainbandwidth product

(4) Current controlled behaviour

201. BJT dh rqyuk es FET viuh fuEu fokskrk ds dkj.k ykHkdkjh gksrh

gS%

(1) mPp bUiqV izfrck/kk(2)mPp jo(3)mPp yfC/k&cSaMfoM~Fk mRikn(4) /kkjk fu;af=r O;ogkj

202. In a transistor, leakage current mainly depends on:

(1) Doping of base (2) Size of emitter

(3) Rating of transistor (4) Temperature

202. ,d VkaftLVj es {kj.k /kkjk eq[;r% fuEu ij fuHkZj djrh gS%

(1) csl dk eanu (2) mRltZd dk vkdkj(3) VkaftLVj dh jsfVax (4) rkieku

203. For a Schmitt trigger, the upper and lower trip voltages

are 3V and 1V, and high and low states are 15V and 2V.

The output for a sinusoidal input of 10V peak will lie

between:

(1) 1V and 3V (2) 2V and 15V

(3) 3V and 15V (4) 10V and 15V

203. fLeV fVxj dsfy, ijh rFkk fupyh fVi oksYVrk,a gS 3V rFkk 1V

vkSj mPp rFkk fuEu voLFkk,a gS 15V rFkk 2VA 10V ihd ds

T;koh; bUiqV ds fy, vkmViqV fuEu dschp gksxk%

(1) 1VrFkk 3V (2) 2VrFkk 15V(3) 3VrFkk 15V (4) 10VrFkk 15V

204. The resolution of a 12 bit D/A converter using a binary

ladder with +10V as the full scale output will be:

(1) 5.12mV (2) 4.32mV

(3) 3.50mV (4) 2.44mV

204. iwjs iSekus dh vkmViqV ds:i es +10V lfgr ,d f}vk/kkjh ySMj

dk iz;ksx djrs gq, 12 fcV Mh@, ifjorZd dk ek=d gksxk%

(1) 5.12mV (2) 4.32mV

(3) 3.50mV (4) 2.44mV

205. The sag of a transmission line with 50m span is 1m.

What will be the sag if the height of the transmission

line is increased by 20%?

(1) 2m (2) 1.25m

(3) 1.2m (4) 1m

205. 50m foLr`fr okyh lapj.k ykbu dk >ksy gS 1mA;fn lapj.k ykbu

dh apkbZ 20% cksy fdruk gksxk\

(1) 2m (2) 1.25m

(3) 1.2m (4) 1m

ECL-136 [C26]

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12/16

ECL-136 [C27]

206. The pulse transformer in thyristor circuits is used for:

(1) Amplification of gate signal

(2) Attenuation of gate signal

(3) Isolation of gate signal from power circuit

(4) Fast turn on of thyristor

206. FkkbfjLVj ifjiFkk e Lin ifj.kkfe= dk ;kx fdld fy, fd;k tkrk g%

(1)}kj ladsr dk o/kZu(2)}kj ladsr dk {kh.ku(3) kf ifjiFk ls}kj ladsr dk foyxu(4) FkkbfjLVj dk qr ?kwerk

207. The presence of source inductance in line

commutated thyristor converters effectively leads to:

(1) Increase in output dc voltage

(2) Reduction in the load current ripples

(3) Increase in the load current ripple

(4) Reduction in output dc voltage

207. ykbu fnd~ifjofrZr FkkbfjLVj ifjorZdks es lzksr sjdRo dh mifLFkfr

Hkkoh :i ls bues ls fdles vxz gksrh gS%

(1) fuxZe Mh-lh- oksYVrk esao`f)(2) yksM /kkjk feZdkvksa esagkzl(3) yksM /kkjk feZdk esao`f)(4) fuxZe Mh-lh- oksYVrk esadeh

208. Which one of the following frequency converter is

most preferred method for speed control of medium

power rating, three-phase, squirrel cage induction

motor:

(1) Current source inverter

(2) Voltage source inverter

(3) Parallel inverter

(4) Cycloconverter

208. e/;e kf lhekad] f=koLFkk] fiatjh sj.kh eksVj dh xfr fu;U=.k

ds fy, fuEukafdr vko`fk ifjorZdks es ls fdl i)fr dks lcls

vf/kd kFkfedrk nh tkrh gS%

(1) /kkjk lzksr rhid(2) oksYVrk lzksr rhid(3)lekUrj rhid(4)lkbDyks ifjorZd

209. In a three-phase, fully controlled thyristor converter

with continuous dc load current, the number of

thyristors conduct during commutation:

(1) None (2) One

(3) Two (4) Three

209. lrr Mh- lh- yksM /kkjk okys ,d f=koLFkk] iw.kZr% fu;fU=r

FkkbZfjLVj ifjorZd es fnDifjorZu ds nkSjku bues ls fdrus FkkbfjLVj

dk;Z djrs gS%

(1) dksbZugha (2) ,d(3) nks (4) rhu

210. For a single-phase, AC voltage controller feeding pure

inductive load, the range of firing angle of each

thyristor is:

(1) 0to 360 (2) 0to 180

(3) 0to 90 (4) 90to 180

210. kq) sjf.kd Hkkj QhM djus okys ,d ,dy&koLFkk ,-lh- oksYVrk

fu;U=d ds R;sd FkkbZfjLVj dsQk;fjax dks.k dh Ja[kyk gS%

(1) 0ls360 (2) 0ls180(3) 0ls90 (4) 90ls180

211. In a single-phase induction motor, the maximum

starting torque is developed:

(1) Shaded pole construction

(2) Capacitor start

(3) Capacitor start and capacitor run

(4) Repulsion start

211. ,d ,dy koLFkk sj.kh eksVj es vf/kdre vkjfEHkd cy vk?kw.kZ

fodflr fd;k x;k gS%

(1)Nk;knkj iksy fuekZ.k(2)la/kkfj= vkjEHk(3) la/kkfj= vkjEHk rFkk la/kkfj= pyuk(4) frdkZ.k kjEHk

212. In a three-phase variable reluctance type stepper

motor, stator consist 12 poles and rotor has 8 poles.

The step angle will be:

(1) 30 (2) 45

(3) 15 (4) 10

212. f=&koLFkk okyh ifjorhZfrVEHk dkj dh lksikfur eksVj es LVs Vj

es 12iksy gS rFkk ?kw.kZd es 8iksy gSA rks ix dks.k bues ls fdrus

fMxzh dk gS%

(1) 30

(2) 45

(3) 15

(4) 10

213. A three-phase induction motor has 8 poles and

operates with a slip of 0.05 for a certain load. The speedof the rotor magnetic field with respect to stator is:

(1) 855 rpm (2) 45 rpm

(3) 900 rpm (4) 0 rpm

213. ,d f=&koLFkk sj.kh eksVj es vkB iksy gS rFkk ;g fufpr Hkkj ds

fy,

0.05ds liZ.k lfgr pkfyr gksrh gSA LVsVj ds lkis{k es ?kw .kZd

pqEcdh; {ks= dh xfr gS%

(1) 855 rpm (2) 45 rpm

(3) 900 rpm (4) 0 rpm

214. A dc shunt motor is running at rated speed with rated

supply voltage. If the supply voltage is reduced to half,

then the speed of the motor becomes:

(1) Half of the rated speed

(2) Double of the rated speed

(3) Slightly less than the rated speed

(4) Slightly more than the rated speed

214. vuqer vkiwfrZ oksYVrk lfgr ,d Mh- lh- ikoZ eksVj vuqer xfr

ij py jgh gSA ;fn vkiwfrZ oksYVrk vk/kh rd de dj nh tkrh gS

rks eksVj dh xfr bues ls D;k gkstk,xh%

(1) vuqer xfr dh vk/kh(2) vuqer xfr dh nqxuh(3) vuqer xfr dh rqyuk esafdphar de(4) vuqer xfr dh rqyuk esafdphar vf/kd

Engistan.com


13/16

ECL-136 [C28]

215. Starting torque of a three-phase squirrel cage

induction motor at rated voltage is:

(1) The rated torque

(2) 50% to 100% of the rated torque

(3) 4 to 7 times of the rated torque

(4) 1 to 3 times of the rated torque

215. vuqer oksYVrk ij ,d f=&koLFkk fiatjh sj.kh eksVj dk vkjfEHkd

cy vk?kw.kZgS%

(1)vuqer cyk?kw.kZ(2)vuqer cyk?kw.kZ50%ls100%(3)vuqer cyk?kw.kZdk 4ls7xquk(4)vuqer cyk?kw.kZdk 1ls3xquk

216. A resistance R is connected in parallel with a parallel

combination of a 20mH inductance and a 50F

capacitance. For what value of R will the circuit be

critically damped:

(1) 5 (2) 1

(3) 10 (4) 100

216. ,d frjks/kd RlekUrj es 20 mHs jdRo rFkk 50F/kkfjrk ds

lekUrj la;kstu ls tqM+k gqvk gSA

Rds fdl eku ds fy, ifjiFk

kfUrd :i ls voean gksxk%

(1) 5 (2) 1

(3) 10 (4) 100

217. An overexcited synchronous motor is connected

across a 100 kVA inductive load having a 0.8 lagging

power factor. The motor takes 10kW input power while

idling (no load). If the motor is not to carry any load,

the value of kVA rating of the motor, if it is desired to

bring the overall power factor to unity, is:

(1) 70 kVA (2) 60.8 kVa

(3) 68 kVA (4) 50 kVA

217. dksbZ vfrmksftr rqY;dkfyd eksVj 0.8 ipxkeh kf xq.kkad okys

100 KVAds sjf.kd Hkkj ls lEc) gSA dk;Z ghurk Hkkj jfgr dh

fLFkfr es eksVj 10kwfuosk kf ys rh gSA ;fn eksVj dksdksbZ Hkkj

ugha ysuk gS vkSj ;fn bls ,dd ;w fuVh dk ldy kf xq.kkad ykus

ds fy, dgk tk, rks eksVj ds KVAvuq erkad dk eku gksxk%

(1) 70 KVA (2) 60.8 KVA

(3) 68 KVA (4) 50 KVA

218. A heating element of a hot plate, on an electric

cooking range, draws 12A from 240V supply. How

many kWh of energy will be consumed in one hour

and 15 minutes:

(1) 1.2 (2) 3.6

(3) 6.0 (4) 7.2

218. ,d fo|qr dqfdax jsUt dh gkWV IysV dk ghfVax ,yhesUV 240oks YV

vkiwfrZ ls 12 Ay s rk gSA ,d ?kUVk 15feuV es ;g fdruh kWh

tkZ [kir djsxk%

(1) 1.2 (2) 3.6

(3) 6.0 (4) 7.2

219. Three equal resistors connected in series, across a

source of emf, dissipate 10W of power. What would be

the power dissipated when they are connected in

parallel across the same source:

(1) 10W (2) 30W

(3) 90W (4) 270W

219. lhjht ls tqM+ rhu leku frjks/kd emflz ksr dsikj 10okV fo|qr

{k; djrs gSA fdruh fo|qr {k; gksxh ;fn mUgs mlh lzksr ds ikj

lekukUrj es tksM+ fn;k tk,%

(1) 10W (2) 30W

(3) 90W (4) 270W

220. The voltage distribution across the insulating string of

high voltage line is made uniform by:

(1) Increasing the number of discs

(2) Decreasing the number of discs

(3) Using the guard rings

(4) Increasing the size of disc

220. mPp oksYVrk ykbu es fo|qrjks/kh rkj ds ikj oksYVrk forj.k bues ls

fdlds }kjk leku :i ls fd;k tkrk gS%

(1) fMLdksadh la[;k c


14/16

ECL-136 [C29]

223. Buchholz relay is:

(1) Voltage sensitive device

(2) A current sensitive device

(3) A frequency sensitive device

(4) A gas actuated device

223. cqdgksYt fjys gS%

(1),d oksYVrk laosnh lk/ku(2) ,d djUV laosnh lk/ku(3) ,d vko`fk laosnh lk/ku(4),d xSl lapkfyr lk/ku

224. According to double revolving field theory, a single

phase induction motor can be considered as

equivalent to two hypothetical constituent motors. If

the slip of one of these motors is s, the slip of the

second will be:

(1) s (2) 2s

(3) 2 s (4) 1 s

224. nqgjs ?kw.k {ks= fl)kUr dsvuqlkj ,d ,dy dyk s j.k eksVj dksnks

ifjdkfYir ?kVd eksVjks ds lerqY; ekuk tk ldrk gSA ;fn bu eksVjks

es ls,d dh fLyi

s gS rks nwljh eksVj dh fLyi gksxh%

(1) s (2) 2s

(3) 2 s (4) 1 s

225. An 8-Mhz TTL signal with 20% duty cycle clocks a 5-bit

ripple counter. What is the clock frequency of the last

flip flop and the duty cycle of its output waveform?:

(1) 500 KHz and 20% (2) 250 KHz and 50%

(3) 500 KHz and 50% (4) 250 KHz and 20%

225. 20%deZ p lfgr ,d 8 Mhz TTLflXuy ,d 5&fcV feZdk

xf.k= dks DykWd djrk gSA vfUre fyi ykWi dh DykWd vko`fk D;k

gksxh rFkk blds fuxZe rjax :i dk deZ p D;k gksxk%

(1) 500 KHz vkSj20% (2) 250 KHz vkSj50%(3) 500 KHz vkSj50% (4) 250 KHz vkSj20%

226. In a junction transistor, the doping level of collector

region is:(1) Higher than emitter region

(2) Lower than base region

(3) Is higher than base region but lower than emitter region

(4) Independent of the doping of base and emitter regions

226. ,d taD'ku VkfUtLVj es laxzkgd {ks= dk Mksfiax Lrj gS%

(1) mRltZd {ks= ls vf/kd(2) vk/kkj {ks= lsde(3)vk/kkj {ks= ls de fdUrqmRltZd {ks= lsvf/kd(4) vk/kkj vkSj mRltZu {ks= dh Mksfiax ls Lora=

227. The best location of DC operating point in an amplifier

for undistorted output is:

(1) Near saturation

(2) Near cut-off region

(3) In the middle of the active region

(4) Any where in the cut off region.

227. vfor fuxZe ds fy, ,d o/kZd es D.C. pkyu Iokb V dh

loZJs B txg gS%

(1)lar`fIr dsfudV(2) dV&vkWQ {ks= ds fudV(3)lf; {ks= dse/; esa(4) dV&vkWQ {ks= esadghaHkh

228. A dynamic memory stores its data in:

(1) Flip flops (2) Inductors

(3) Capacitors (4) Registers.

228. ,d xfrd Le`fr vius MkVk bues lsfdles Hka Mkj.k djrh gSA

(1) fyi&ykWi (2) sjd(3) la/kkfj= (4) jftLVj

229. In a dual converter operating under circulating current

mode:

(1) Only one converter operates at a time

(2) Both operate as rectifier

(3) Both operate as inverter

(4) One converter acts as rectifier and other as inverter

229. ifjlapkjh /kkjk eksM ds vUrxZr py jgs ,d f}&ifjorZd es%

(1) ,d le; esa dsoy ,d ifjorZd gh dk;Zdjrk gS(2) nksuksa fn"Vdkjh ds:i esa dk;Z djrsgSa(3) nksuksa rhid ds :i esadk;Zdjrs gSa(4) ,d ifjorZd fn"Vdkjh rFkk nwljk rhid ds:i esa dk;Zdjrk

gS

230. In a semi-controlled bridge rectifier, the power flow is:

(1) From load to the source (2) From source to load

(3) Both directions (4) Not possible

230. ,d v)Zfu;fU=r lsrq fn Vdkjh es 'kf okg gksrk gS%

(1)Hkkj lslzksr dh vksj (2) lzksr lsHkkj dh vksj(3) nksuksafn'kkvksa esa (4)lEHko ugha gS

231. The meter that is suitable for only direct current

measurement is:

(1) Moving iron type

(2) Permanent magnet type

(3) Electro-dynamic type

(4) Hot-wire type

231.lh/ks djUV ekius ds fy, ,d ek= mi;q ehVj gS%

(1)py ykSg dkj(2) LFkkbZ pqEcd dkj(3) bysDVks xR;kRed dkj(4) rIr ok;j dkj

232. Two complete signal cycles would be displayed on the

screen of a scope when time period of the sweep

generator is :

(1) Half (2) Twice

(3) Equal (4) None of the above

232. fdlh Ldksi ds ins ij nks iw.kZ ladsr p nf'kZr fd, tk,xs tcfd

Lohi tsujsVj dh le;kof/k gS%

(1) vk/kh (2) nqxuh(3) cjkcj (4) mi;qZ esa lsdksbZ ugha

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233. The Fourier Series of an even periodic function contains:

(1) Sine terms only

(2) Cosine terms only

(3) Both sine and cosine terms

(4) Alternate sine and cosine terms

233. ,d le fu;rdkfyd Qyu dh Qwfj, Js.kh es gksrs gS%

(1) dsoy lkbu VeZ(2)dsoy dkslkbu VeZ(3)lkbu vkSj dkslkbu VeZ nksuksa(4)ckjh&ckjh lslkbu vkSj dkslkbu VeZ

234. A ramp voltage, v(t) = 100.t, is applied to an R-C series

circuit with R = 5 k and C = 4 F. The current

through the circuit as t is:

(1) 200 mA (2) 20 mA

(3) 4 mA (4) 0.4 mA

234. ,d jsEi oksYVrk] v(t) = 100.t ,d R-C Js.kh lfdZ V ij

R = 5 k vkSj C = 4 F ds lkFk es yxkbZ tkrh gS rks

t ds :i es lfdZV ds ek/;e ls djUV gksxk%

(1) 200 mA (2) 20 mA

(3) 4 mA (4) 0.4 mA

235. The equivalent inductance between X-X in the circuit

given below is:

(1) 6/5 (2) 3/2

(3) 12/7 (4) 2

235. uhps fn[kk, x, fp= ifjiFk es xx* ds chp lerqY; sjdRo gS:

(1) 6/5 (2) 3/2

(3) 12/7 (4) 2

236. The main difference between the drift and diffusionmechanisms of current flow in a transistor is that:

(1) The drift current flows due to forward bias while

diffusion current is due to reverse bias

(2) The drift current flows due to reverse bias while

diffusion current is due to forward bias

(3) The drift current depends on concentration gradient

while diffusion current depends on electric field

(4) The drift current depends on electric field while

diffusion current depends on concentration gradient

236.fdlh VkfUtLVj es djUV okg dh viokg vkSj folj.k ;kfU=dh ds

chp eq[k vUrj ;g gS fd%

(1) viokg djUV vxzvfHkufr ds dkj.k okfgr gksrk gS tcfdfolj.k djUV foijhr vfHkufr ds dkj.k

(2)viokg djUV foijhr vfHkufr ds dkj.k tcfd folj.k djUVvxz vfHkufr dsdkj.k okfgr gksrk gS

(3) viokg djUV ladsU.k o.krk ij fuHkZj djrk gS tcfd folj.kdjUV fo|qr {ks= ij fuHkZj djrk gSA

(4) viokg djUV fo|qr {ks= ij fuHkZj djrk gS tcfd folj.kdjUV ladsU.k o.krk ij fuHkZj djrk gS

237. A compiler produces which of the following output:

(1) An executable file (2) An object file

(3) A com file (4) A source file

237. dksbZ dEikbyj fuEufyf[kr vkmViqV es lsfdls mRikfnr djrk gS%

(1) fu"ik| Qkby (2)vfHky{; Qkby(3) dkWe Qkby (4) lzksr Qkby

238. In frequency modulation the:

(1) Carrier amplitude varies according to signal amplitude

(2) Carrier amplitude varies according to signal frequency

(3) Carrier frequency varies according to signal amplitude

(4) Carrier frequency varies according to signal frequency

238. vko`fk ekMqyu es%

(1) ladsr vk;ke ,sfEIyV~;wM ds vuqlkj okgd dSfjvj vk;kecnyrk gS

(2) ladsr vko`fk dsvuqlkj okgd dSfjvj vk;ke cnyrk gS(3) ladsr vk;ke dsvuqlkj okgd vko`fk cnyrh gS(4) ladsr vko`fk dsvuqlkj okgd vko`fk cnyrh gS

239. Which one of the following is not a common

application of a Wien bridge?

(1) Frequency determining network in an oscillator

(2) Measurement of inductance

(3) Harmonic distortion analyzer(4) Measurement of frequency

239. fuEufyf[kr es ls dkSu ,d ohu fczt dk lkekU; vuq;ksx ugha gS\

(1) fdlh nksfy= esavko`fk fu/kkZjd usVodZ(2) sjdRo dk ekiu(3) lauknh fo:i.k fo'ys"kd

(4) vko`fk dk ekiu

240. Two sinusoidal signals of frequencies f1 and f2 are

applied to the horizontal and vertical inputs

respectively of a cathode ray oscilloscope. The display

is as shown below. The ratio f1/f2is:

(1) 2/5 (2) 5/2

(3) 1/5 (4) 5

240. ,d dSFkksM fdj.k nksyun'k es {kSfrt ,oa /okZ/kj buiqVks ds fy,

e'k% f1vkS j f2vko`fk;ks ds nks T;koh; ladsr ;q fd, tkrs gSA

uhps fp= es n'kZuh fn[kkbZ xbZ gSA f1/f2dk vuq ikr crkb,\

(1) 2/5 (2) 5/2

(3) 1/5 (4) 5

ECL-136 [C30]

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121 2 151 3 181 2 211 4

122 4 152 2 182 2 212 3

123 3 153 1 183 3 213

124 4 154 4 184 3 214 3

125 3 155 1 185 1 215 4

126 4 156 1 186 3 216 3

127 3 157 1 187 4 217 2

128 2 158 2 188 3 218 2

129 3 159 3 189 3 219 3

130 1 160 1 190 3 220 3

131 2 161 4 191 3 221 2

132 4 162 3 192 3 222 1

133 1 163 2 193 3 223 4

134 2 164 3 194 2 224 3

135 3 165 4 195 2 225 3

136 3 166 2 196 4 226 3

137 1 167 3 197 3 227 3

138 2 168 2 198 2 228 3

139 3 169 2 199 2 229 4

140 2

170 4

200 3

230 2

141 1 171 2 201 1 231 2

142 1 172 4 202 4 232 2

143 3 173 2 203 2 233 2

144 1 174 3 204 4 234 4

145 4 175 2 205 4 235 1

146 4 176 2 206 3 236 4

147 1 177 2 207 4 237 2

148 3 178 2 208 4 238 3

149 3 179 3 209 4 239 2

150 4 180 1 210 4 240 4

Q.No

213

Description

AMBIGUOUS

17/11/2013FOOD CORPORATION OF INDIA

PAPER-II (136_Electrical Engineering)

SERIESC

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136 Electrical Engg. Paper-II FCI 17-11-2013 C SERIES Engistan.com

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