ies electrical engineering paper 1 2002

7/30/2019 IES Electrical Engineering Paper 1 2002

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I ELECTRICAL ENGINEERING II.

2.

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PAPER-IJ\ potemiaJ field is given by V= yz.Which ofd1e fo llowing isNOT rrue'!a At the poin t (I. 0. -I ), V and tho

electric l i ~ l d if vanishb. x' J' = I is an equipotential line in the

lly-lancc. n1e equipotential surface V - 8 passesthrough the !}(lim P(2. - I. 4)t1 A unit nonnnl 10 the


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Which of the lbllowing ~ < J l l l l t i o n s is/arenot MaJ. e l l ' ~ e < J U S i o n ( ~ ) ' !t. '11.7 : i't2. 'll.TJ:/v- an3. ' VE= -

otrf- - f( - a)UN.dl =[ u+ea i .d!i"

.Select the correct answer using the i.:O< 1011- P=}'r;

Consider the arrungcmcnl of two equal andopposite c.harges of magnitud e q separatedh) an inlinitesimal dist:UlC u,4;rr;r 41TEr

- 2q l cos0 _ q ls inO_h. "* a, + o,,4/TEI ' 4m:rl the un its ofa. Flux-li11kngeb. Powerc. l!nergy


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d. Inductance1\ lnUl.lListn1. Permalloy2 BAriOJ cernmio3. ll."ll,PO.,4. 1'w1gstun toolCodes: A l la. 3 2b. 1 4c. 3 4d. 1 2

cI3I3

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On lhe npplic:otion of lhc Jiold li. lhemodified fie ld due to polarizoltlon P insolid and l i ~ u i d having cubic v m m e t ~is given by- pa. +-Ro

b. if p-e.- fic. Fi+ -3&,

d. - j iE- -3e,23. 11tc complex dic lectlic constant of amaterial i< given by the expres,ion :

t...-: J&"lf porallcl plate cnpacitor "ith nreo 'A and separnllon d' is formed with thismalcrinl as a diol


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24.

25.

26.

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2K

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tnll ' [(Ac')/(cb;")] s i ~ l i ~

show perfect

c, The e:erCilnducting t a t ~ to normal s1111eTit

momentumWhtch one of the thllowing mmcrials c.nnnOt be used for pcnnnncnt magnN> ''a, Alnicob Barium Fmilcc. Cnrbon -s1ccld. Iron-Cobalt alloy

30, llptll ab


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SV25 /7 A 120 0

l11c current th rough 120 ohm resistor inthe drcuit shown in the ligure isa. l Ab. 2Ac. 3 Ad. 4A

v

0The v-i cbnrootcristic or ao clement isshown in the ligure given above. J'hcekment isu. nt, n-lini:>lr. uctivc:.b. linc


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+to u R

For lhe circuit shown in dte given rtg,ur>:. i fC - 20 11f'. v(()') - 50 V and dv (t!')ldl ~5()() VIS. then R is;1. 5Kb. 3 Kc. 5Ktl. 10 K[ttlhc circuit $ht>WII in ih< givt:.ll ligurc. lheswi1ch is cloS


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48.

49.

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d. - 5 ~ ( 3 s i n 4 0 0 t ) AA resonant frequency a R-L-C s e r i ~clrcuil druws ma.x.imwn current due to

f O l ~ O I I thaia. 01e difterence between cnpacitancereactance and inductance reactance iszeroh. the imp(l(J&t\Cij is mnre than theresistancec. the v o l i l l ~ o across the ctlpacitor equalsthe applied voltagC lovo l, I00sets of data an: averat!ed ll1e averageddata so1"ill ha ve a noise level red uced bya factor ofa. 10b. 10./2c. 50./2d 100Winch of the l l o 1 1 lransducers IS

o s . ~ fied ns on nc livc lrnnsduccr'!a. Metalloc straw g;JUgeb Cnpacnivc micmphoncc. L VDTd. Piezoelecnic transducer

~ T.fff)_p cWinch cul\c i11 1hc give!\ ligooe . : s c ~resistance t e m p e n u u r ~ duuacteristics of aohcrm istor?u. C.'urvc Ab. Curve 8c. Curve Cd. CurveDA I em picmcl.xtric t r a n s ~ ' l ' f ha11ng ag-cooJficoent ot 58 V/k.(!>m1 is sub eered ma constant pressure of 10 kgtm2 for aboul15 mi nu ll!t\d loop .ysronos'lI II does nor compensate fo1

r b ; t n ~ ~


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82 .

2. It roduoos the sens itivi ty or pluntparumttcrvarhuious3. h docs not involve outputmeasurements4. h has the ability to t


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6.

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T stendy-sW te error resulling lrum uninput r(t) %2+3t+4r for given stat isa. 2.411. 4.()r Zert>d. 3.2If o rmnp mput is applied to l'ypc-2system. the steady- stage error sa positive ct)(ls tantb ncg.uive onn$tliOIc, zerod. positive infinityldcntifl the corroct root t . ~ ~ ~ l li'om theligures given hclo\\1 referring UJ fll)lcs nndzero$ at ~ j 8 and j I0 respectively


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91

92.

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The characleristoc equation of a system os&ivcu byJs' + IOs' +Ss '+ Z= O Th issyslem isa Stableb. MargmaJ ly stablec. Unstabled Nenher (a), (b ) not (c)Match Lost I witlo Lost 11 and select thecorrec t answerLtst l1\ . Phase lag_ ontrollerB. Additooo of zero at ol'igonC Denvarive output compensauonD. Derivative errorLost 11L Improvement on ttansoent response2. Reduction on sle.'ldy-sta te error3 Reduction in settling time-1 Increase in dampmg constantCodes,

A B C Da 4 3 I 2b. 2 4 3 4c.d_

42 J

3 14

lndocate whoch o of the fol lowin!>transfer functions represents phase leadcompensator''

c . - -Js I 2dA transfer function


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b. $(.v+1)sc. (2H I)

d. 1s(H I)09. Whicb one of the f o l l o w i n ~ slateuJents isINCORRECT with referenc'e to pneum atic

system?a_ Operating. pressure- Is low compared tohydraulic systemb. L c ~ k s can create P"1blems as well asli re hazardsc. They are insensitive 10 temperatu rech1mges((, High c o m p of air results. inlonger time delays

I0(). Consider Ihe following mregarding II.C.


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c. Rrunp l'ilnetlond. f.xponential fun ction

1()6 Lis t I with .Lit II nnd scleet litecorrect omswer.

107.

J. t!it l (E.Icmen LS)A. i"ont ro llerB. SamplerC. HuldI i& III A/0 ccrtioo t A): l:fJ8.J.r= 0 where 8 =111agnelic llux dens ity ds = vector wiUtdirection normalW u r f a olemen t -Rc....,soo {R): Tube.. of mnguctk flu.'C bJlv"no sources or sinks.n. Both A & 8 nrc true o.nd R ill tho

CQ.rrect explanntion of IIb. Both A & R ore true but R NOT thecurrect p l o n o t ol' Ac. A is lllle butR is falsed. A is fa lseobut R is truelOR. C'onsidcr a plnnc electromngnetie W3 Viue idcnt O()rtt13lly Oil tbc Urtitcc of a gOOdcondu ctor. The wave b.,. an electric fieldor amp)i tlule I (V im) lind the Jopthfor the conductor is tOcn1.Al;;atlon (A ): Ti tM't of !herelotve permittivity is res ponsible fordidoctrie loss.a. BoOt A & B llu" lind R is IIJccom.:ct p l n > t i ofAb. Both A &. R "'" true but R is NOT tbc

COrrect exrlnnation of Ac. A true but R is t:.lsed. is false but R is true

I10. Assertion (A): ..\ doped .. ,mico nductor' 'ill hehve as a tr at tcruKlvin b ut its eloctrical conductivity \I il lrise i f he icmpewturc "' slowly inc; ,asedabove U!TO Kelvin.ReMon (R): The in electricalis moinly .. due to lot.ni.'IS


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ies electrical engineering paper 1 2002

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