Basic Electricity(Panda Sir)

8/20/2019 Basic Electricity(Panda Sir)

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BASIC ELECTRICITY

ELECTRICAL,BATTERY,GENERATORS &MOTORS

1. If Z is impedance, r is inerna! resisance and Ris e"erna! resisance, #en$a% Z R ' r$(% Z) R) ' r)

$c% Z R) ' r )(d) None). Resisance f*r a srai+# c*ndc*r d*es n*depends p*n$a% !en+#(b) shape of cross section$c% emperare$d% maeria!-. In a capaci*r$a% capaci depends *n separai*n *f p!aesand measred in farads$(% capaci depends *n area *f p!aes and

measred in farads$c% capaci depends *n nare *f die!ecricmaeria!(d) all (3-57)/. Idenif #e sm(*!

(a) capacitor$(% c*ndenser$c% resis*r

$d% (*# A&B0. Am*n *f e!ecr*n #a can (e s*red *ncapaci*r is pr*p*ri*na! * $Capaciance *f acapaci*r%

$a% (*# p!ae area and disance (eeen#em$(% p!ae area and d*es n* depend p*ndisance (eeen #em(c) plate area and inversely proportionalto distance (3-57)$d% disance (eeen p!aes and in2erse!pr*p*ri*na! * area3. 4*r5in+ 2*!a+e *f capaci*r s#*!d (e$a% A !eas )67 #i+#er #an app!ied(b) at least 50% higher than applied $c% e8a! * app!ied 2*!a+e

$d% !ess #an 067 #an app!ied 2*!a+e9. 4#en capacii2e reacance (ec*mese8a! * indci2e reacance *f a circi i isca!!ed$a% p#ase:in $(% p#ase:*(c) resonant (3-67) $d% impedancemac#in+;. O#mered in AC circi arca!!ed(a) impedence $(% resisance

1). Re!ai*n (eeen 2*!, ampere and 4e(is +i2en (a. amp?2*! s8are @4e(er

(. amp 2*! @ 4e(erc. 2*!?amp @ 4e(erd! None1-. 4#ic# *f #e f*!!*in+ issed as 2*!a+ere+!a*r de2ice$a% car(*n pi!e 2*!a+e re+!a*r$(% ma+neic amp!ier re+!a*r$c% ransis*r re+!a*r(d) all are correct1/. 4#en * sp#ere *f same mass, *ne '2e c#ar+ed and *#er is @2e c#ar+ed, #enne mass i!!

$a% c#an+e (b)"nchanged

10. If #e c*ndc*r is *f / *#m and isrec#ed * ice *f is !en+# #en isresisance is$a% 1 *#m$(% *#m $c% 1) O#m (d)$hm13. A and B are (i+ and sma!! (aer#a2in+ same emf. Inerna! resisance *f(aer A is(a) ess than &$(% Greaer #an B$c% e8a! * B $d% Dna>eced

19. 4#ic# saemen is c*rrec$a% f*rce is e"ered *n c#ar+ed paric!e(b) force is applied on charged particmoving along 'ith magnetic eld!1. E!ecrica! p*er and ener+ is e"pressedin erms *f(a) ilo-'att and *ilo 'att ho"rrespectively (+,5)$(% 4a and *!e respeci2e!$c% 4a and a #*r respeci2e!$d% 4a and Ne*n)6. A ire is c*nneced * c*nsan 2*!a+

spp! #i!e #e !en+# and radis is d*(!e@$a% e!ecric e!d is #a!f$(% e!ecric e!d is d*(!e$c% #ea is nc#an+ed(d) electric eld remain same

)1. Fea ener+ is c*n2ered * e!ecrica!ener+ in


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$a% Transdcer $(% T#erm*c*p!e (c) &oth

)). In srai+# c*ndc*r #e resisance d*n* depend p*n

$a% emperare $(% !en+#$c% maeria! (d) shape of

cross section)-. E!ecrica! (*ndin+ and s#ie!din+ issed *

$a% a2*id accm!ai*n *f saic c#ar+e$(% +i2e sa(i!i in radi* recepi*n(c) both (a) (b)(+7#)$d% N*ne)/. T#e *r5 d*ne *n a m*2in+ c#ar+efr*m *ne p*in * an*#er is depend p*n$a% #e pa# a5en $(%

p*sii*n *f * p*ins)3. 4#ic# *>ers nif*rm ma+neic e!d$a% ear# $(%

(ar ma+ne$c% circ!ar ma+ne $d%

#*rse s#*e ma+ne)9. If ) 2*! crren is passed #r*+#resisan *f 16 *#m #e p*er c*nsmed (#e c*mp*nen is $= S8are?R%$a% 9./ a $(% 964a$c% 9/ 4a $d% 94a). Refer #e +re H #a i!! #e*#mmeer read$a% )6 *#m $(% 6 *#m $c%

/6 *#m

);. If #e rpm *f #e dri2er +ear is 36 #en#e rpm *f dri2en +ear is$a% 1)6 rpm $(% 166 rpm $c% 36rpm $d% -6 rpm-6. T#e resisance *f c*ndc*r depends *n$a% emperare $(% !en+#and maeria!$c% cr*ss seci*na! area $d%

a!!-1. In an indci2e circi$a% crren !a+s (e#ind 2*!a+e ( ;6 de+.$(% crren !eads (e#ind 2*!a+e ( ;6 de+.

$c% cr*ss seci*na! area$d% N*ne

-). 4#ic# *ne is npaired$a% (aer @ accm!a*r

$(% di*de @ NR=$c% AC +enera*r @ 2*re" +enera*r $d%

EM @ MM

--. 4#ic# *ne is n* primar ce!!

$a% Zn:car(*n $(% Lead acid c$c% A!5a!ine ce!!

-/. Jirc#*>ec *n #e par ( 2arin+ fre8encin edd crren esin+

$a% s5in e>ec $(%

/6. Baeries are c*nnec in series$a% *a! crren is e8a! * #e sm *f #indi2ida! crren$(% *a! 2*!a+e is e8a! * #e sm *f #indi2ida! 2*!a+e$c% (*# a & ($d% N*ne

/1. 4#en #ree indi2ida! resisance arec*nneced in para!!e! * eac# *#er #ic# *f

#e f*!!*in+ is c*rrec$a% RR1'R)'R- $(% I?R I?R1 ' 1?R) ' I?R-

/). Dni *f ma+neic K" is$a% e(er $(% Ne*n me$c% (*# a & c $d% n*ne


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/-. A ma+neic f*rce a!as e"er *n$a% a c#ar+ed paric!e$(% a nc#ar+ed paric!e$c% c#ar+ed paric!e para!!e! * ma+neicK"

//. Essenia! parameers f*r ca!c!ain+p*er are$a% f*rce $(%

disance ra2e!ed$c% ime d*in+ *r5 $d% a!! *f#e a(*2e

/0. 1 F is sa! *$a% 9-0 e!ecric as $(% 9/3e!ecrica! as$c% (*# a & ( $d% n*ne

/3. O#m


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$ii% acr*ss #e c*nac p*ins$iii% in series i# c*nac p*ins$i2% N*ne

31. Tes f*r ins!a*rs$i% i:e!ecric sren+# es$ii% Ins!ai*n resisance es$iii% i:e!ecric resisance es and

(ra5e d*n 2*!a+e es

$i2% i:e!ecric sren+# es andins!ai*n resisance es

3). A?C e!ecrica! (s (ars are made *f H

$i% A!minm$ii% C*pper$iii% A!minm and c*pper $-:10%$i2% N*ne

3-. 4#ic# *ne is near * ransdcerH

$i% Genera*r and aena*r and T*c#e!!e sa! pr*(c

$ii% M**r and amp!ier$iii% Capaci*r and ener di*de$i2% Baer

3/. re8enc *f A.C $S*rce%H$i% 00$ii% 36$iii% 03$i2% 09

30. Ma". re8enc $in +re% *f reedH$i% 00$ii% 11)$iii% 03$i2% 116

33. F* mc# p*er ms a )/:2*!+enera*r frnis# * a ssem #ic# c*nains#e f*!!*in+ !*adsP

Dni Rain+One M**r $67 eQcien%136 4a

T#ree p*sii*n !i+#s )64a eac#

One #eain+ e!emen 0 ampsOne ani c*!!isi*n !i+# - Amps

$i% /6) 4as$ii% -0 4as

$iii% /06 4as$i2% /9) 4as

39. A 1) = e!ecric m**r #as 1666 asinp and 1F.. *p, mainainin+ #e sameQcienc, #* mc# inp p*er i!! a )/=1F.. e!ecric! m**r re8ire $N*e 1 F.. 9/6%

$i% 16664 $ii% )666

$iii% 0664 $i2% As in$ii% and !ess crren i!! K*

3. F* mc# p*er is (ein+ frnis#ed #e circi$i% 1106 $ii% 0906 $iii% 0);6 $i2% )-66

3;. A )/ = s*rce is re8ired * frnis# /* a para!!e! circi c*nsisin+ *f f*r resis*

*f e8a! 2a!e , #a is #e 2*!a+e dr*pacr*ss eac# resis*rH

$i% 1) = $ii% - = $iii%)/= $i2% / =

96. If resis*r R, is disc*nneced a #e nci*n *f R/ and R0 as s#*n , #a i!! *#mmeer read $i% ).93 O#m $ii% - O#m $iii%

1) O#m $i2% 3 O#m

91. 4#en ca!c!ain+ p*er in a reaci2e

indci2e ac circi , #e re p*er is$i% M*re #an #e apparen p*er$ii% Less #an #e apparen p*er in areaci2e circi and m*re #an #e apparenp*er in an indci*n circi$iii% M*re #an #e apparen p*er in areaci2e circi and !ess #an #e apparenp*er in an indci2e circi.i2% Less #an #e apparen p*er.$-:3/%

9). T#e e8i2a!en resisance is

$a% ) $(% / $c% 1 $d% -

9-. T#e ammeer can (e c*n2ered in *2*!meer ( c*nnecin+


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$a% a resis*r in series i# meerc*i! $-:;%

$(% a resis*r in para!!e! i# meerc*i!

a capaci*r in series i# meerc*i!

$d% N*ne

9/. If resis*r R is disc*nneced a #e

nci*n *f R/ and R0 as s#*n, #a i!! #e*#mmeer read

$i% ).93 $ii%- $iii% 1) $i2%3

90. T* ensre #e pr*per dema+neiai*n*f a par a5e near * #e c*mpass, #edeKeci*n *f c*mpass need!e m*re #a

$i% -6 de+ree mines re8iredema+neiai*n a+ain

$ii% 1 de+ree n* dema+neiai*n$iii% 1 de+ree re8ire c*mp*nen *

(e dema+neied a+ain and es * (erepeaed

$i2% 1 de+ree mine * re8irec*mp*nen * (e dema+neied

93. In a circi #e capaci*r and indc*rare in para!!e! #en

$i% L* 2*!a+e dr*p$ii% N* crren i!! pass #r*+# #e

c5 a res*nan fre8enc$iii% Crren i!! K* in #e c5

99. In a circi #e p*er is ) a and2*!a+e is ) 2*! #en #e resisence is

$i% ) O#m $ii% 03 O#m$iii% 1 O#m

9. *er fac*r is

$i% E>eci2e p*er J?apparenp*er J=A $-:3/%

$ii% C*sine *f p#ase an+!e'1$iii% Sine *f p#ase an+!e '1

$i2% On! $i% is c*rrec

9;. In ransf*rmer #in !aminaed c*re issed f*r

$i% redcin+ ed crren !*ss $;A:-31%

$ii% L* redcance$iii% 1')

6. If #e c*i! !en+# is decreased in #e

circi, #e p*er

$i% Remains same $ii%Increases$iii% ecreases $i2%Zer*

1. T#e *rdinar eQcienc *f ransf*rmema"imm #en

$i% I rns a #a!f f!! !*ad$i% I rns a f!! !*ad

$iii% I


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$i% IR r*ps $ii%Baer EM$III% Vnci*n 2*!a+e $i2%B*# $i% & $ii% $;A:);%

3. A fse is sed in e!ecrica! circi *

$i% indicae #e c*nsmpi*n *fp*er

$ii% Brea5 #e circi #en p*er is *> $iii% Mainain c*nsan crren$i2% Brea5 #e circi in case *f *2er crren

9. In an A.C. c5 #e rai* *f J4?J=Arepresens

$i% *er fac*r $ii%L*ad fac*r$iii% *rm fac*r$i2% i2ersi fac*r

. On sma!! dia a?c e!ecrica! ca(!es *n!#e rec*mmend srippin+ **!s s#*!d (e sedf*r rem*2in+ #e ins!ai*n. On n* acc*ns#*!d a

$i% Sie cin+ p!ier * (e sed$ii% Jnife (e sed$iii% Fea (e sed$i2% An *f #e a(*2e

;. T#e *pp*sii*n *>ered ( a c*i! * #eK* *f a!ernain+ crren is ca!!ed

$disre+ard resisance%

$i% Impedance$ii% Re!cance$iii% Indci2e Reacance$-:0-%$i2% Indcance and fre8enc

;6. In ac circi #e e>eci2e 2*!a+e is

$i% Less #an #e predeermined2*!a+e

$ii% E8a! * #e ma"imm

insanane*s 2*!a+e$iii% Greaer #an #e ma"imm

insanane*s 2*!a+e$i2% Less #an #e ma"imm

insanane*s 2*!a+e

;1. Dn!ess *#erise specied, an 2a!e+i2en f*r crren *r 2*!a+e in an ac circi aassmed * (e

$i% Insanane*s 2a!es$ii% Mean 2a!es$iii% E>eci2e 2a!es $-:/9% $i2%Ma"imm 2a!es

;). T#e p*enia! di>erence (eeen *c*ndc*rs #ic# are ins!aed fr*m eac#*#er is measred in

$i% =*!s$ii% Amperes$iii% arads$i2% C*!*m(s

;-. T#e c*rrec a * c*nnec a es2*!meer in a circi is

$i% E8a! * #e 2*!a+e *f ni$ii% In series i# a ni$iii% Beeen #e s*rce 2*!a+e an

#e !*ad.$i2% In para!!e! i# a ni

;/. If #ree resis*rs *f - *#ms, 0 *#ms a)) *#ms are c*nneced in series in a ):2*!circi, #* mc# crren i!! K* #r*+# -:*#m resis*r

$i% 6.-; amperes$ii% ;.- amperes$iii% 1.60 amperes$i2% 6.;- amperes

;0. 4#ic# *f #ese i!! case #e resisan*f a c*ndc*r * decrease

$i% ecreases #e !en+# *r #ecr*ss:seci*na! area.

$ii% ecrease #e !en+# *r increase#e cr*ss:seci*na! area.

$iii% Increase #e !en+# *r decrease

#e cr*ss:seci*na! area.$i2% ecrease #e !en+# and #e

cr*ss seci*n area.

;3. T#e 2*!a+e dr*p in a c*ndc*r *f5n*n resisance is dependen *f

$i% T#e 2*!a+e *f #e circi.


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$ii% Crren *f #e circi.$iii% On! #e resisance *f #e

c*ndc*r and d*es n* c#an+e i# a c#an+e in ei#er 2*!a+e *r ampera+e.

$i2% T#e ampera+e *f #e circi.

;. 4#en ca!c!ain+ p*er in a reaci2e *rindci2e ac:circi, #e re

p*er is

$i% M*re #an #e apparen p*er.$ii% Less #an #e apparen p*er in

a reaci2e circi and m*re #an T#e apparen p*er in an

indci2e circi.$iii% Less #an #e apparen p*er.$-:

30%$i2% An *f #e a(*2e.

;;. Transfer *f e!ecrica! ener+ fr*m *ne

c*ndc*r * an*#er i#* #e aid *fe!ecrica! c*nneci*ns

$i% Is ca!!ed indci*n.$ii% Is ca!!ed radiai*n.$iii% Is ca!!ed air +ap ransfer.$i2% 4i!! case e"cessi2e arcin+ and

#ead and as a res! is impracica!.

166. 4#en referrin+ * an e!ecrica! circidia+ram , #a p*in is c*nsidered * (e aer* 2*!a+e

$i% T#e circi (rea5er $ii6 T#eam*sp#ere reference

$iii% T#e sic# $i2% T#e +r*nd reference

161. If an e!ecr*de is rem*2ed fr*m #e ce!!and * 5n* is p*enia! di>erence i isc*mpared i#

$i% An e!ecr*de in an*#er ce!!

$ii% Area *f p!aes$iii% Nm(er *f separa*r

16). MTCS

$i% Re#*sa is - ermina! and se!* 2*!a+e

$ii% *eni*meer is ) ermina! andse #i+# 2*!a+e

$iii% Re#*sa is ) ermina! and se!* 2*!a+e

$i2% *eni*meer is - ermina! andse !* 2*!a+e

16-. T#e ma+nide *f indced emfpr*dced in a c*i! #en a ma+ne is insered

in i d*es n* depend p*n

$a% n* *f rns in c*i!$(% resisance *f c*i!$c% ma+neic m*men *f ma+ne$d% Speed *f r*ai*n *f ma+ne $ma+nesren+#%

16/. A ransf*rmer

$a% amp!ies #e !* inp si+na! * #i+#*p si+na!

$(% sed as a recier$c% sed in ransdcer se$d% (*# $a% & $c% are c*rrec

160. EM is pr*dced in +enera*r (

$a% Len


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$a% increases in sec*ndar ( rai* 36?06$(% decreases in sec*ndar ( rai* 06?36$c% (*# 1 and )$d% n*ne

11-. Mar5 #e c*rrec saemen f*rransf*rmer$a% ma! indci*n is *r5in+ princip!e$(% *p 2*!a+e depends *n

ransf*rmai*n rai*?rn rai*$c% a!! *f #e a(*2e

11/. recisi*n ire *nd resis*rs are*nded i#$a% car(*n $(% c*pper

$c% ma+nanin$)9% $d% a!! *f #ea(*2e

110. Transf*rmer sed f*r H:

$a% Transfer p*er a same fre8enc$(% Transis*r circi$c% a and ( are c*rrec

113. 4#ic# *ne am*n+ f*!!*in+ is sed *nd * #a #e#er c*ncerned ransf*rmeris sep p *r sepd*nH

$i% O#mmeer $;A:-3/%$ii% =*!meer and ammeer$iii% Ammeer$i2% A!! *f #e a(*2e

119. ars *f #e Airframe ms (edema+neied

$i% S* #e i!! n* a>ec reraci*n*f nder carria+e

$ii% S* #e i!! n* a>ecinsrmens

$iii% O#erise #e c*mp*nens mafai! * *perae

$i2% e ma+neic si+n is re8ired *n!f*r en+ine pars n* air frame

11. Crren ransf*rmer is *pened p*n

$i% Sep p $ii% Sep d*n$iii% Dni ransii*n $i2% N*ne

11;. If 2*!a+e *f sep p ransf*rmer isd*(!ed and ransf*rmer rai* is 1H) #en #*p #r*+# #e c*i! is

$i% Same $ii% Fa!f$iii% *(!ed

1)6. A ma+nide *f #e emf *f ransf*rmed*es n* depend p*n

$i% T#e ma+nide *f emf app!ied acr*ss#e primar

$ii% T#e nm(er *f rns in #eprimar

$iii% T#e nm(er *f rns in #esec*ndar

$i2% T#e resisance *f primar &sec*ndar

1)1. T#e a!! da eQcienc *f ransf*rmerdepends primari! *n

$i% I


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1)0. Ga!2an*meer is ransferred inammeer

$a% B c*nnecin+ !* resisance in series* #e +a!2an*meer$(% B c*nnecin+ #i+# resisance in series* #e +a!2an*meer$c% B c*nnecin+ !* resisance in para!!e!* increase ran+e

$d% B c*nnecin+ #i+# resisance inpara!!e! * increase ran+e

1)3. S#n *#mmeer measres

$a% !* resisance$-:;1%$(% #i+# resisance

$c% precisi*n resisance$d% innie resisance

1). Ran+e *f ammeer can (e increased (

$a% c*nnecin+ #i+# resisance is para!!e!$(% c*nnecin+ #i+# resisance in series.$c% c*nnecin+ !* resisance in para!!e!$-)/%$d% c*nnecin+ !* resisance in series

1);. T#e sensii2i *f 2*!meer is measredin

$a% O#m? 2*!$-:;6% $(% 4a$c% arads $d% ampere

$e% =*!?meer $f% =*!?*#m

1-1. If acid is spi!!ed *2er s5in fr*m an a?c(aer #en i c!eaned i#$a% aer

$(% aer & (*ric acid$c% aer & (icar(*nae *f s*da

$d% a!!

1-/. T#e sensii2i *f a meer m*2emen issa!! e"pressed as

$i% T#e am*n *f crren re8ired* +i2e f!! sca!e deKeci*n$ii% T#e am*n *f crren re8ired * +i2e#a!f sca!e deKeci*n$iii% As in $i% and ma (e e"pressed as #enm(ers *f mi!! 2*!s acr*ss #e meer #enf!! sca!e crren K*s #r*+# i $-)/%

$i2% As in $ii% and ma (e e"pressed as #enm(ers *f mi!! 2*!s acr*ss #e meer #enf!! sca!e crren K*s #r*+# i

1-0.


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1-9. If !*ad is rem*2ed fr*m s#n m**rand is in *pen circi #en #e crren is

$i% Ma"imm $ii%Minimm$iii% epend p*n #e apparen p*er

1-. In sin+!e p#ase indci*n m**r

$i% e!d is r*ain+$ii% Armare is r*ain+$iii% Armare is sai*nar

1-;. A series *nd d.c. m**r i!! pr*dce

$i% L* sarin+ *r8e$ii% Fi+# sarin+ *r8e$iii% 1' is speed depends p*n #e

2a!e *f !*ad$i2% )'is speed depend #e 2a!e *f

!*ad$/:-/%

1/6. T#e asa+e *f ener+ in ap*eni*meer can (e minimied ( 5eepin+

$i% T#e resisance as !* as p*ssi(!e$ii% T#e resisance as #i+# as

p*ssi(!e$iii% T#e resisance p*eni*meer

!*er #an #a *f !*ad$i2% N*ne

1/1. In a di>erenia! re!a ssem #ec#ar+in+ *f (aer #appens, #en ))=+eneraed 2*!a+e is #ere, #r*+#

$i% =*!a+e re!a c*i!$ii% i>erenia! re!a c*i!$iii% Main c*nac*r$i2% B*# 1 & )

1/). In an aircraf a!erna*r #e re2ersecrren c * re!a can (e a2*ided de *#e presence *f

$i% Recier ni$ii% =*!a+e re+!a*r$iii% Crren !imier$i2% N*ne

1/-. In a (rs# !ess a!erna*r #ere can (e

$i% - e!d indin+s & ) armareindin+s & *ne permanen ma+ne

$ii% - e!d indin+s & ) armareindin+s & * permanen ma+ne

$iii% ) e!d indin+s & - armareindin+s & *ne permanen ma+ne

$i2% One e!d indin+s & 1 armarindin+s & *ne permanen ma+ne

1//. Speed *f #e m**r can (e increased $a% e!d indin+$(% :seci*na! area *f #e e!d $armare$c% E"iai*n indin+$d% A!!

1/0. Speed *f m**r increase #en !*adcrren decrease (ecase *f $a% frici*na! !*ss (eeen m**r


11/27

$i% C#an+in+ #e p*!ari *f spp!* e!d & armare

$ii% Dsin+ sp!i e!d indin+s$/:-)%$iii% Dsin+ d*(!e:p*!e, d*(!e #r*

sic#$i2% B*# ) & -

101. A permanen ma+ne r*ar in2ererc*nsiss *f

$i% A d.c. +enera*r & a.c. +enera*r$ii% A d.c. m**r & a.c. m**r$iii% A d.c. m**r & a.c. +enera*r$/:

-0%A d.c. +enera*r & a.c. m**r

10). A #erma! sic# as sed in an e!ecricm**r is desi+ned *

$i% S!* d*n #e speed *f m**r.$ii% C!*se #e ine+ra! fan circi *

a!!* c**!in+ *f #e m**r.

$iii% Open #e circi in *rder * a!!*c**!in+ *f #e m**r.

$i2% Rer*e #e circi * +r*nd.

10-. In a series *nd C +enera*r

$i% T#e e!d c*i!s are c*mp*sed *f afe rns *f !ar+e ire$/:--%

$ii% T#e e!d c*i!s are c*mp*sed *fm*re rns *f #in ire

$iii% As in $i% and #en #e !*ad isincreased, #e 2*!a+e decreases

$i2% As in $ii% and #en #e !*ad isincreased, #e 2*!a+e increases

10/. An nder c*mp*nded +enera*r #as

$i% N*:!*ad 2*!a+e 2a!e !ess #an f!! !*ad2*!a+e

$ii% !! !*ad 2*!a+e !ess #an #e n*!*ad 2*!a+e

$iii% As in $i% and c#an+es in ermina!2*!a+e i# increasin+ !*ad depends p*n #ede+ree *f c*mp*ndin+

$i2% As in $ii% and c#an+es in ermina!2*!a+e i# increasin+ !*ad depends p*n #ede+ree *f c*mp*ndin+$/:16%

100. In a C +enera*r inerp*!es are sed

$i% T* redce e!d dis*ri*n

$ii% T* As in $i% and #e 5eep #enera! p!ane para!!e! dis*red e!d

$iii% As in $i% and #e 5eep #e nep!ane perpendic!ar * dis*red e!d$i2% As in $ii% and impr*2e #e eQcienc*p and ser2ice *ife *f (rs#es

103. 4#ic# saemen is re re+ardin+di>erenia! sic#

$i% I c*nnecs #e +enera*r * main (s#en +enera*r 2*!a+e e"ceeds #e (s2*!a+e ( 6.)0 * 6./0 2$ii% I c*nnecs #e +enera*r * main (s#en +enera*r 2*!a+e e"ceeds #e (s2*!a+e ( 6.-0 * 6.30 =.$iii% As in $i% and i disc*nnecs #e+enera*r #en n*mina! re2erse crren K*fr*m (s * +enera*r$i2% As in $ii% and I disc*nnecs #e+enera*r #en n*mina! re2erse crren K*fr*m (s * +enera*r

109. In s#n m**r

$i% T#e e!d indin+ is c*nneced inpara!!e! i# armare indin+$ii% T#e resisance in e!d indin+ is #i+#and crren #r*+# #e e!d indin+ isc*nsan$iii% T#e *r8e i!! 2ar *n! i# #ecrren #r*+# armare$i2% A!! #e a(*2e are c*rrec

10;. T* e"ie a se!f e"cied C +enera*r

$i% A C +enera*r is sed iniia!!e"ie

$ii% I e"ie #im se!f i# * s*rce$iii% A C m**r is sed

136. F* man ermina!s can (e a5en *fr*m sd$a% *ne ermina! per sd$(% * ermina! per sd

$c% (*# a?c and 2an are 5ep a e8a!p*enia! i# a irean n* *f ermina!s can (e a5en * fr*m *sd

131. iama+neic maeria! #as permea(i!i


12/27

$i% +reaer #an *ne AN NONERRODS METALS ARE CALLEARAMAGNETIC $ii% !ess #an *ne;A:-6)

$iii% 2er mc# +reaer #an *ne$i2% e8a! * *ne


13/27

BATTERIES

1. T#e e!ecr*!e *f a NI:cad (aer is#e !*es #en #e (aer is

$i% In a c#ar+ed c*ndii*n$ii% Bein+ c#ar+ed$iii% In a disc#ar+ed c*ndii*n $-1/%$i2% Dnder !*ad c*ndii*n

). F* can #e sae *f c#ar+e *f a nic5e!cad (aer (e deermined

$i% B measrin+ #e specic +ra2i*f #e e!ecr*!e

$ii% B measred disc#ar+ed$iii% B #e !e2e! *f #e e!ecr*!e$i2% N*ne *f #e a(*2e

-. 4#en a c#ar+in+ crren is app!ied * anic5e!:cadmim (aer, #e ce!!s

emis +as *n!

$i% T*ard #e end *f #e c#ar+in+cc!e.$-1/%

$ii% In #e (e+innin+ *f #e c#ar+in+cc!e.

$iii% 4#en #e e!ecr*!e !e2e! is !*.$i2% If #e are defeci2e.

/. T#e '2e p!ae in disc#ar+ed Ni:cd(aer is *f

$i% Nic5e! #dr*"ide

$ii% Nic5e! *" #dr*"ide$iii% cd:#dr*"ide$i2% cd:*"#dr*"ide

0. S*ra+e *f Ni:Cd (aer

$i% Baer f!! c#ar+ed and e!ecr*!edrained

$ii% As in 1 c!ean #e ermina!s$iii% Baer disc#ar+ed and f!! i#

e!ecr*!e$i2% Mainain c*red aer !e2e! a!s*

3. T#e aci2e maeria! *f Ni:cd (aer are

$i% Nic5e! #dr*"ide$ii% *dered cadmim and is

#dr*"ide$iii% -67 s*!i*n *f casic p*as#$i2% A!! *f #e a(*2e.$-1/%

9. Aircraf (aeries s#*!d (edisc*nneced as a precai*n a+ains re

$i% 4#en s*!derin+ is carried * adacen* irin+ !**ms *r ca(!es

$ii% 4#en e!din+ is carried * *nA?C srcre

$iii% 4#en +r*nd rn is +i2en i#

e"erna! (aer$i2% 4#en A?C is par5ed in side #e

#an+er

. Lead (aer capaci * afer iniia! c#ar+e and #ereafer a

$i% One m*n# $ii%- m*n#s$iii% 3 m*n#s $i2% E2er

ear a #e ime *f C *f A renea!

;. Acid *f !ead acid (aer nera!iedi# H:

$a% B*ric Acid $(% Bi:car(*nae *f s*da$-:-;%

$c% N*ne *f a(*2e

16. A?C (aer is H

$i% An a"i!iar s*rce *f e!ecricaener+

$ii% T#e main s*rce *f e!ecrica!ener+ in !ar+e A?C

$iii% $i% ' #e c*!*r *f p*sii2e p!ae #e !ead acid (aer is c#*c5!e (r*n $;A:-63%

$i2% $ii% ' $iii%

11. In a !ead:acid (aer #e separa*rs#a2e 2erica! ri(s *n #e side facin+ #e ' 2ep!ae. I


14/27

1). T#e maeria! & c*!*r *f p*sii2e p!ae in#e !ead:acid (aer is @

$i% (O, Gra$ii% (O, c#*c5!e (r*n$iii% (O), c#*c5!e (r*n$i2% (O, Gra

1-. A emperare c*rreci*n in sp Gra2i*f e!ecr*!e is n* necessar a #e f*!!*in+emp:

$i% 30 $ii% (eeen 96de+ree & ;6 e+ree $;A:)9)% $iii%

(eeen ;6 de+ree @ 166 de+ree $i2% A!! are c*rrec

1/. In AC (aeries are c#ar+ed ( #ef*!!*in+ me#*d:

$i% C*nsan =*!a+e me#*d $;A:-1-%$ii% C*nsan =*!a+e 2aria(!e crrenme#*d$iii% C*nsan crren me#*d $i2%

An *f #e a(*2e

10. 4#ie p*der *n a pr*per! ser2iced NiCd (aer indicaes:

$i% N*rma! *perai*n$ii% O2er c#ar+in+ $;A:-1/%

$iii% !ader c#ar+in+$i2% O2er!!ed e!ecr*!e

13. 4#a deermines #e am*n *f crren#ic# i!! K* #r*+# aBaer #i!e i is (ein+ c#ar+ed ( a

c*nsan 2*!a+e s*rce

$i% T#e *a! p!ae area *f #e(aer.

$ii% T#e sae:*f:c#ar+e *f #e(aer.

$iii% T#e ampere:#*r capaci *f #e(aer.

$i2% N*ne *f #e a(*2e.

19. T#e prp*se *f pr*2idin+ a spacendernea# #e p!aes in a !ead acid (aer


15/27

$d% n* c*rreci*n is made

)-. 4#en a ne Ni:cd (aer is insa!!ed isce!! sea! is *pened and p*r e!ecr*!e *ensre #e f!! c#ar+e (aer

$a% n* c#ar+e is re8ired$(% c#ar+e is +i2en and (**s p and $A%$(% as in $(% and sdden! insa!!ed in a?cser2ice

$d% as in $(% and afer * #*rs c#ec5 #ee!ecr*!e and insa!!ed in ser2ice

)/. 4#a pe *f (aer c#ar+er isrec*mmended f*r na! c#ar+in+ *f Ni:cd(aer

$a% c*nsan crren c#ar+er$(% c*nsan 2*!a+e c#ar+er$c% (*# a & ($d% an *ne *f #e a(*2e

)0. Ni:cad (aer is rapid! c#ar+ed i#

$a% c*nsan crren and 2aria(!e 2*!a+e$(% c*nsan 2*!a+e and 2aria(!ecrren$-:/6%$c% 2aria(!e 2*!a+e and 2aria(!e crren$d% (*# a & (

)3. *r a (aer * #a2e #i+# ampere #*rcapaci and #i+# ermina!s 2*!a+e

$a% s#*!d #a2e !* inerna! resisance

$(% s#*!d #a2e #i+# inerna! resisance$c% d*es n* depend *n inerna! resisance$d% N*ne

)9. E!ecr*!e sed in !ead acid (aer

$a% JOF $(%i!e F)SO/

$c% C*ncenraed F)SO/ $d%N*ne

);. Fdr*+en +as is emis in #e (aer

$a% drin+ a!! imes in !ead acid (aerser2icin+$(% in Ni:cd (aer a #e end *f c#ar+in+$c% #en (aer is *2erc#ar+ed$d% (*# a & c

-6. An A?C (aer fai!s * perf*rm 67 *is raed capaci #ic# *ne s#*!d (e carrie*

$i% Ce!! (a!ancin+$ii% Recc!e C#ec5$iii% =*!a+e rec*2er$i2% N*ne

-1. T* nera!ie acid dep*sis in !ead aci(aer c*mparmens and * rea acid (rnfr*m c#emica! c!eaners seH

$i% (*ric p*der$ii% mi!d s*ap s*!i*n$iii% Ba5in+ s*da $;A:-6%

Oi! s*!(!e deer+en c!eaner

-). nci*n *f anim*n in a +rid *f !eadacid (aer is

$a% * ma5e p*ssi(!e ner casin+$(% pr*2idin+ space f*r m*re aci2e

maeria!$C% #arden #e !ead and ma5e i !e

sscepi(!e * c#emica! aci*n$d% a!! #e a(*2e

--. T#e sp. Gra2i *f e!ecr*!e in a f!!!ead acid c#ar+ed (aer ms (e (eeen

$a% 1.)90 * 1.-66 a 6 de+ .$(% 1.)- * 1.)0

1.) * 1.)0$d% 1.) * 1.)90

-/. Ne+ai2e p!ae *f !ead:acid (aer ismade *f

$a% !ead $-:-0% $(%!ead *"ide !ead per*"ide $d%n*ne

-0. JOF fr*m ees is as#ed i#

$i% 4aer $ii% B*ric acid $iii%Mi!d s*ap aer

-3. 4#ere (aer *r #ere acids #a2e (espi!!ed, #e a>eced pars s#*!d #en (e(rs#ed i# a


16/27

$i% i!ed Aceic acid f*r nic5e! cd(aeries * nera!ie e!ecr*!ic

$ii% i!e s*!i*n *f s*dim(icar(*nae f*r !ead acid (aeries

$iii% i!e s*!i*n *f (*ra" and niricacid f*r (*# !ead acid and nic5e! cad.(aeries respeci2e!

$i2% $i% and $ii% are c*rrec $-:-;?/)%

-9. e * spar5in+ in c*nned p!ace in #epresence *f aer, #a is pr*dced

$i% C*rr*si*n $ii%Err*si*n$iii% Niric acid $i2%S!p#ric acid

-. T#e aci2e maeria! *f NI:cd (aer are

$i% Nic5!e #dr*"ide $ii%*dered cadmim and is #dr*"ide

$iii% -67 S*!i*n *f casic p*as#$i2% A!! *f #e a(*2e$-:/1%

-;. T#e e!ecr*!e sed in #e NI:C(aer is

$i% a -67 s*!i*n $( ei+#% *fJOF in disi!!ed aer $-:/1%

$ii% A /67 s*!i*n $( ei+# % *fJOF in disi!!ed aer

$iii% A 067 s*!i*n $( ei+#% *f 5*#in disi!!ed aer

$i2% N*ne

/6. .Baer i!! n* freee ni!e"reme! !* emperares are reac#ed(ecase

$i% T#e acid in #e p!aes, #ere(increasin+ #e specic +ra2i*f #e s*!i*n.

$ii% M*s *f #e acid is in #e s*!i*n.$iii% Increased inerna! resisance

+eneraes sQcien #ea *pre2en freein+.

$i2% ecreased inerna! resisanced*es n* +enerain+ #ea *pre2en freein+.

/1. T* nera!ie #e srface *f Ni:cad(aer c*mparmen

$a% (*ric acidc#ec5 $(% aer $c%(a5in+ s*da $d% a!!

/). Ce!!*p#ane is sed * pr*ec #e Ni:Cad (aer fr*m

a% S#*rin+ (eeen p!aes (% T#erma! rnaac% A2*id !ea5a+e *f e!ecr*!e d% A!

#ese

/-. =ici*s cc!e is c*nneced *$a% Nic5e! cadmim (aer

$(% S!p#ric acid (aer$c% r ce!!

$d% N*ne *f #e a(*2e

//. .hen applying gen left hand r"leyo"r inde nger points in the directionthe lines of magnetic 1" travel/ yo"rth"mb indicates the cond"ctors directio

of movement/ and yo"r second ng"reindicates the direcion of ind"ced 24!

/0. .hen "sing the motor right handr"le/ yo"r right inde nger indicates tdirection the magnectic 1" 1o's/ 'hilyo"r second ng"re indicates thedirection of c"rrent 1o' and yo"r th"mthe direction the coil rotates!

/3. eries 'o"nd C +enera*r #a2e p*

2*! re+!ai*n capa(i!iies and are #eref*ren* sia(!e f*r ac. F*e2er #e are sia(f*r siai*ns #ere a c*ns RM and c*ns!*ad are app!ied * #e +en.

/9. T#e *p and 2*! re+!ai*n capa(i!*f sh"nt type C +enera*r ma5e #emsia(!e f*r !i+# * medim d se *n ac.F*e2er, m*s *f #ese nis #a2e +enera!!(een rep!aced ( C a!erna*rs.

/. T#e am*n *f 2*! pr*dced ( a

compo"nd 'o"nd C +enera*r depends *#e de+ree *f c*mp*ndin+. T#e 1at-compo"nd +enera*r is *ne in #ic# #e n*!*ad and f!! !*ad 2*! #a2e #e same 2a!e.he "nder compo"d +en #as f!! !*ad 2*! !ess #an #e n* !*ad 2*! and an overcompo"nd +en #as a f!! !*ad 2*! #a is#i+#er #an #e n* !*ad 2*!.


17/27

228II9(:&)

1. T#e am*n *f e!ecrici a capaci*rcan s*re is direc! pr*p*ri*na! *a% isance (eeen #e p!ae and in2erse!pr*p*ri*na! * #ep!ae area

(% !ae area and is n* a>eced ( #edisance (eeen #ep!ae.c% !ae area and in2erse! pr*p*ri*na! *#e disance (eeen#e p!aed% N*ne *f #ese

). T#e c*rrec a * c*nnec a es 2*!meer in a circi is

a. In series i# a ni(. Beeen #e s*rce 2*!a+e and #e !*ad

c. In para!!e! i# nid. B*# $a% and $c% are c*rrec

-. Tpica! app!icai*n *f Zener di*de is asa. !! a2e reciers (. Fa!f

a2e recierc. =*!a+e re+!a*r d.

Amp!ier

/. T#e me#*d sed * rapid! c#ar+e aNic5e! Cadmim (aer i!ies

a. C*nsan crren and c*nsan

2*!a+e(. c*nsan crren and 2arin+ 2*!a+e

c. C*nsan 2*!a+e and 2arin+ crrend. =arin+ 2*!a+e and 2arin+ crren

0. *enia! di>erence (eeen *c*ndc*rs ins!aed fr*m eac# *#er ismeasred ina% Ampere (% C*!*m( c% O#m

d% =*!

9. 4#ic# erm means .661 amperea% Micr* ampere (% Mi!!iamperec% Ji!* ampere d% Nan*ampere

. Dni sed * e"press e!ecrica! p*er is

a% Ampere (% =*! c% 4ad% C*!*m(

;. Transfer *f e!ecrica! ener+ fr*m *nec*ndc*r * an*#er i#* #e aid *fe!ecrica! c*nneci*n isa% Indci*n(% Air +ap ransferc% N* p*ssi(!e

d% *ssi(!e ( i!! case e"cessi2e arcin+#s n* pracica!

16. Ma+neic !ines *f f*rce pass m*sreadi! #r*+#a% A!minim (% C*pper

c% Ir*nd% Tianim

11. In a srai+# c*ndc*r, #e resisancen* a>eced (a% Len+# (%

Temperare

c% S#ape *f cr*ss seci*n d% Maeria!

1). *er and *r5 are measred ina% 4a and f*rce (% 4a and

*!ec% Ampere #*r and *!e d% arad and *!e

1/. T#e c#an+e in resisance depends pa% Temperare (% Maeria!and !en+#c% Cr*ss seci*na! area d% B*# (%and c% are c*rrec

10. M*s e"ensi2e! sed maeria! inaircraf e!ecrica! ca(!es isa% R((er and si!5 (% N!*n and c**c% TeK*n d% B*# (% & c% arec*rrec

13. In a para!!e! circia% T*a! resisance is !ess #an sma!!esresis*r(% T*a! resisance decreases #en *ne *f #resisance is rem*2ed

c% T*a! 2*!a+e dr*p is same as *a!resisanced% A!! are c*rrec

19. If #ere are n< nm(ers *f ce!!s, eac##a2in+ a 2*!a+e *f E< and resisance R


18/27

a% nE (% $n:1%E c% n$n : X%E d%N*ne *f #ese

1. A 1)= (!( is c*nneced in series anddras - amperes crren fr*m a 1)= (aer.Is resisance and p*er i!! (ea% -3 *#ms, / 4 (% / *#ms, -34c% 1 *#m, 1) 4 d% N*ne *f

#ese

1;. i% AC crren passin+ #r*+# ac*ndc*r creaes emf ar*nd #e c*ndc*rii% re8enc *f radi* a2e radiaed e8a!s#e fre8enc *f #e app!ied crrena% On! i% is c*rrec (% On! ii% isc*rrecc% B*# i% and ii% are c*rrec d%Nei#er i% n*r ii% is c*rrec

)6. !" sed f*r c*mma*r ires ande!ecrica! c*nneci*ns

a% Zinc c#!*ride(% Zinc c#!*ride ( di!in+ i# 067 a!c*#*!c% A!c*#*!ic s*!i*n *f r*sind% R*sin

)1. 4#i!e insa!!in+ (aer $Ni:Cad% *n a?c* ms inspeca% =eni!ai*n ssem *f a?c

(% Ca(!e f*r c#aQn+c% Uic5 disc*nneci*n mec#anism

d% A!! *f #ese

)). 4#a i!! (e 2a!e *f resisance *fe!!*, red, *ran+e and +*!da% /)666Ω ± 167 (% /)666Ω ± 07c% 1)666Ω ± 07 d% ))666Ω ± 167

)-. One *f #e e>ec *f ne+ai2e feed (ac5in amp!iers is *a% Increase #e n*ise(% Increase #e #arm*nic dis*ri*nc% ecrease #e (andid#d% ecrease #e #arm*nic dis*ri*n

)0. T#e de2ice sed * measre 2er #i+#ins!ai*n resisance *f e!ecric ca(!e isa% Fi+# resisance 2*!meer(% Me++er ? Ins!ai*n resisance eserc% Ir*n 2ane meerd% Ammeer *f #i+# ran+e

)3. If si" ce!!s are c*nneced in series *feac# E 2*!s, #e *a! 2*!a+e *f #e (aeri!! (ea% 3E (% -E c% /E

d% 1)E

)9. Specia! es e8ipmen c*mprisin+ ameer and * ca(!es eac# *f specic !en+#

is re8ired f*r c#ec5in+ #e resisance *f(*ndin+. A meer ide! sed , c*nsiss *f a*#m:meer *perain+ *na% rincip!e *f crren rai* (%rincip!e *f 2*!a+e rai*

c% N*ne *f #ese

). Ce!!p#ane is sed * pr*ec #e Ni:Ca(aer fr*ma% S#*rin+ (eeen p!aes (%

T#erma! rnaac% A2*id !ea5a+e *f e!ecr*!e d% A!

#ese

);. T* 8aniies are said * (e in p#asei# eac# *#er #ena% T#e p#ase di>erence (eeen *8aniies is er* de+rees(% Eac# *f #em pass #r*+# er* 2a!es a#e same ime and rise in #e same direci*nc% B*# a% & (%d% N*ne *f #ese

-6. 4#en ca!c!ain+ p*er in a reaci2e

indci2e ac circi, #e re p*er isa% M*re #an #e apparen p*er

(% Less #an #e apparen p*erc% As in (% in reaci2e circi and as in a% inindci2e circid% N*ne *f #ese

-1. i*des are sed in e!ecrica! p*ercirci primari! asa% Sic#es (% Reciersc% Re!as d% C*nac*

-). If #ree resis*rs *f -, 0 and )) *#msare c*nneced in series in a )= circi, #*mc# crren i!! K* #r*+# #e - *#msresis*ra% ;.- amps (% 1.60 ampsc% 6.;- amps d% 16.60 amps


19/27

--. 4#a is #e 2a!e *f a resisance if+i2en c*!*r c*des as (r*n, (!ac5, (r*n,(!ac5 and (r*n.a% 1616 *#ms (% 1666 *#msc% 161 *#ms d% 16.1 J *#ms

-/. 4#a is #e 2a!e *f a capaci*r if +i2enc*!*r c*des are *ran+e, *ran+e, (!e and#ie.

a% --n (% -- c% --pd% --66

-0. T#e *p *f a asa(!e m!i:2i(ra*r isa% Trian+!ar a2e (% Sa **# a2ec% Sins*ida! a2e d% S8are a2e

-3. In an *sci!!*sc*pe ( 2arin+ inensic*nr*!, #a aca!! 2aried inerna!!a% Ca#*de 2*!a+e (% An*de 2*!a+ec% Grid 2*!a+e d% Ca#*de crren

-9. T#e p#ase di>erence (eeen 2*!a+eand crren in a pre!resisi2e circi is +i2en ($A% 66

$B% ;66

$C% /06

$% 1-06

-. One micr* farad is e8a! *a% 6.661 mi!!i farad (% 166mi!!i faradc% 1666 mi!!i farad d% 16 mi!!i

farad

-;. T* sm**#en #e C in recier, eemp!*a% L (. F c% B

d% N*ne

/6. T#e =*!a+e ? Crren acr*ss #e s#*rcircia% = ma" I 6(% = 6 I ma"c% = 6 I 6

d% = ma" I ma"

/1. T* resisances *f 10, 1) *#ms eac#are c*nneced in para!!e!acr*ss a spp!, +i2in+ )9 ampere, #encrren #r*+# 10 *#m i!!(ea% )9 amp

(% 1) ampc% 10 ampd% 1 amp

/). 4#ic# p!ain+ pr*cess pr*2idee"ce!!en (ase f*r pain

a% Cd @ !ain+ (% Zn @!ain+

c% Gran*diin+ d% A!! *f #

a(*2e

/-. 4#ic# reamen +i2e e"ce!!en(ase f*r paina% CR @ !ain+(% ar5eriin+c% Mea! sprain+d% Zn @ p!ain+

//. T#e pr*cess se inc as amedim f*r p!ain+a% ar5eriin+

(% S#eradiin+c% Ga!2*niin+d% B*# (% and c%

/0. T#e erm 16:0 farads meana. 1 mi!i:farad (. 16 micr*

faradc. 16 nan*:farad d. N*ne

/3. A capaci*r c*nsiss *f *a% c*ndc*rs separaed ( an ins!a*r ca!!#e di:e!ecric.

(% ins!a*rs separaed ( a c*ndc*r.c% ins!a*rs separaed ( air medim.d% c*ndc*rs separaed ( air medim.

/9. In a capaci*r e!ecric c#ar+e is s*redin

$a% mea! p!aes $(% di:e!ecr

$c% (*# $a% & $(% $d% n*ne *f #ese

/. Dni *f m.m.f. is$a% e(er $(% +i!(er

$c% ma"e!! $d% #enr

/;. V*!e?c*!*m( is #e ni *f $a% e!ecric e!d p*enia! $(%

p*enia!$c% c#ar+e $d% n*ne *f#ese


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06. In a !ead:acid (aer, e"cessi2ef*rmai*n *f !ead s!p#ae *ccrs de *

$a% id!eness *f (aer f*r a !*n+ ime$(% !* !e2e! *f e!ecr*!e

$c% persisen nder c#ar+in+$d% a!! *f #em

01. C*mm*n impri in a (aere!ecr*!e is

$a% ds paric!e $(% ir*n$c% !ead crsa!s $d% s*dimc#!*ride

0). O2erc#ar+in+ *f !ead:acid (aer i!!case

$a% e"cessi2e +assin+$(% !*ss *f aci2e maeria!

$c% increase in emperare res!in+ in(c5!in+$d% a!! *f #em

0-. T#e ener+ *f a capaci*r #a2in+capaciance C< and 2*!a+e =<is +i2en ( $a% 6.0 C=) $(% C=

$c% C)= $d% 6.0 C)=

0/. One ni *f ma+neic K" is +i2en ( $a% 4e(er $(%4e(er per meer s8are $c% S8are r** *f 4e(er $d% Fener

00. Genera*rs *r5s *n #e princip!e *f $a% arada


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91. Fi+# disc#ar+e eser is sed * c#ec5#ea% 2*!a+e *f (aer in n*rma! *perain+c*ndii*n.(% eQcienc *f c*ndenser.c% +enera*r *p.d% 2*!a+e *f (aer * nd is c#ar+ec*ndii*n and #e#errec#ar+in+ is re8ired.

9). E!ecrica! p*er and ener+ ise"pressed in erms *f $a% Ji!* 4a and Ji!* 4a F*r respeci2e!$(% 4a and V*!e respeci2e!$c% 4a and 4a er F*r respeci2e!

$d% 4a and Ne*n

9-. T#ree p#ase indin+ r*ae i# 166rpm in ma+neic e!d #a2in+ p*!es, isfre8enc i!! (e

$a% 1)6 Cc!e?Sec $(% 66 Cc!es? Sec$c% 1)66 Cc!es? Sec $d% 166Cc!es? Sec

9/. Jirc#*>ec ransis*r%respeci2e!$d% n*ne *f #e a(*2e

99. In #ic# c*ndii*n #e (rid+e is said (e (a!ance$a% R1 is increased, R) is decreased$(% R- is increased, R/ is decreased$c% R) is increased, R- is decreased$d% #en G is c*nsan

9. In case *f (aer #ic# *f #e f*!!*i8ani can (e s*red

$a% ener+ $(% c#ar+e$c% crren $d% n*ne *f#e a(*2e

9;. In a dr ce!! (aer$a% car(*n e!ecr*de is p!aced

cenra!! srr*nded (a!minim c#!*ride e!ecr*!e.

$(% inc c#!*ride is p!aced cenra!!srr*nded ( a!minimc#!*ride e!ecr*!e.

$c% car(*n e!ecr*de is p!aced

cenra!! srr*nded ( incc#!*ride e!ecr*!e.

$d% (*# $a% and $c% are c*rrec.

6. T#e idenica! ins!aed ire c*i!s are#n+ fr*m air s* #a #e are facin+ eac#*#er and spp!ied i# same direci*n a.c.$a% (*# are araced * eac# *#er$(% (*# are repe!!ed$c% c!*c5ise r*ai*n$d% anic!*c5ise r*ai*n

1. R#e*sa 2aries$a% am*n *f crren

$(% am*n *f 2*!a+e$c% (*# $a% & $(%

$d% n*ne

). *eni*meer 2aries$a% am*n *f crren

$(% am*n *f 2*!a+e$c% (*# $a% & $(%

$d% n*ne

-. A #e cener *f a c*i!, am*n *f K"c*ncenraed ma"imm a$a% sarin+ *f a c*i! $(% e*f a c*i!$c% cener *f a c*i! $d% remaine8a! a a!! p!aces


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/. Ne+ai2e p!ae *f !ead acid (aer is$a% !ead $(% !eadper*"ide$c% !ead s!p#ide $d%sp*n+ !ead

0. !aes *f !ead acid (aer is made *f $a%!ead ' anim*n *n #ic# aci2e maeria! is

aac#ed.$(%!ead ' ir*n *n #ic# aci2e maeria! isaac#ed.$c%anim*n ' ir*n *n #ic# aci2e maeria! isaac#ed.$d% n*ne

3. MM. is measred in Gi!(er andsm(*!ied ( #e capia! !eer.$a% G $(% $c% M

$d% 4

9. S*!en*id re!a is *peraed *n$a% #i+# crren $(% !* crren$c% #i+# 2*!a+e $d% !* 2*!a+e

. C*nsrci*n *f separa*r *f a !ead acid(aer is made in sc# a a #a icirc!aes #e e!ecr*!e free! ar*nd #ep!aes in addii*n i a!s* pr*2ides a pa# f*rsedimens * se!e.$a% a #e side *f ce!!

$(% a #e *p *f ce!!$c% a #e (**m *f ce!! $d%

n*ne

;. T#erma! pr*ec*r is sed *$a% pr*ec a m**r$(% * *pen #e circi a*maica!!$c% i *peraes #en emperare is 2er #i+#$d% a!! *f #e a(*2e

;6. S?4 desi+ned f*r m*menari!*perai*n$a% micr* s? $(% ps# (*n s?$c% *++!e s? $d% n*ne

;1. R*ar S?4 are sed in$a% 2*!meer se!ec*r s? $(% i+nii*ns?$c% (*# $a% & $(% $d% n*ne

;). Sarer re!a s? is made * *perae

$a% inermien$(% c*nin*s!$c% c*!d case *2er #eain+ if *peraedc*nin*s!$d% (*# $a% and $c%

;-. Oi! capaci*rs +enera!! resriced * sed in$a% radi* ransmiin+ e8ipmen $(%

radar ransmiin+ e8ipmen$c% (*# $d%n*ne

;/. In "ed mica capaci*r #e die!ecric made *f$a% mea! p!ae $(% mica$c% (*# $a% & $(% $d% n*ne

;0. Mica pre2ens as a die!ecric$a% arc#in+ (eeen #e p!aes$(% can i#sand #i+#er 2*!a+e

$c% (*# $a% & $(%$d% n*ne *f #ese

;3. T#e capaci*r #ic# pr*2ides !ar+ecapaciance in sma!! p#sica! sie is$a% *i! capaci*r $(% micacapaci*r$c% e!ecr*!ic capaci*r $d% papercapaci*r

;9. 4e:e!ecr*!ic capaci*rs ms (em*ned *n

$a% #*ri*na!! $(% 2erica!!$c% an p*sii*n $d% n*ne

;. T#e *r5in+ 2*!a+e *f a capaci*rdepends *n $a% pe *f maeria! sed as a di:e!ecric$(% #ic5ness *f di:e!ecric$c% fre8enc$d% a!! *f #e a(*2e

166. *er fac*r is #e rai* *f a% Tre p*er ? apparen p*er

(% Apparen p*er ? re p*erc% Zer* p*er ? re p*erd% N*ne *f #e a(*2e

161. Transf*rmer *r5s *n #e princip!e *f a% Se!f indci*n(% Ma! indci*nc% E!ecr*ma+neic indci*n


23/27

d% Ma+neic indci*n

16). T#e fac*r, #ic# deermines #e#era +i2en ransf*rmer is sepped p *r seepedd*n, is +i2en (a% Crren rai*(% =*!a+e rai*c% *er rai*d% Trns rai*

16-. T#e prp*se *f ir*n c*re in ransf*rmerisa% Gi2en e!ecrica! ener+ fr*m #e s*rce(% Is*!aes primar i# sec*ndarc% V*in primar i# sec*ndard% r*2ides !* re!cance f*r ma+neic !ines*f f*rce

16/. If #e rai* *f #e ransf*rmer inp2*!a+e * #e *p 2*!a+e is same as #ern rai* #en, ransf*rmer is said * (e

a% 067 eQcien (% 1167 eQcienc% 1667 eQcien d% )07 eQcien

160. 4#ic# *f #e f*!!*in+ ransf*rmer canappr*ac# 1667 eQciena% Ir*n c*re ransf*rmer(% errie c*re ransf*rmerc% C*pper c*re ransf*rmerd% N*ne *f #ese

163. T#e ran+e *f fre8enc in #e case *fadi* ransf*rmer is

a% /6 * )6666 c.p.s(% )6 * )6666 c.p.s $-36%c% 166 * 16666 c.p.sd% 16 * 16666 c.p.s

169. R ransf*rmer i!iesIr*n c*reC*pper c*reMa+neic c*reAir c*re $-36%

16. T#e sm(*! *f a*ransf*rmer sed f*r

c*mmnicai*n *r na2i+ai*n circi is$#ere is n* sm(*! f*r ir*n c*re%

16;. C*pper !*ss in a ransf*rmer is cased(

e * ir*n c*re

T#e resisance *f #e c*ndc*r c*mprisin+ #e rns *f #ec*i!e * n*. *f rnsN*ne *f #e a(*2e

116. T#e ran+e *f paper capaci*r is +i2en a% )66 micr* micr* farads * se2era! micfarads

(% /66 micr* farads * )6 micr* faradsc% 1 micr* farad * 1666 micr* faradsd% )66 micr* farads * /66 micr* farads

111. In radi* and radar ransmiers e+enera!! prefer * se$a% Oi! capaci*r$(%aper capaci*r$c%Mica capaci*r$d%E!ecr*!e capaci*r

11). T#e ran+e *f mica capaci*r is

$a%06 micr* micr* farads * 6.6) micr* farad$(%16 micr* farad * /6 micr* farads$c%Greaer #an /6 micr* farads$d%N*ne *f #ese

11/. C!amper is sed *a% C an p*ri*n *f AC cc!e(% S#if is C !e2e!c% C#an+e #e fre8encd% Ads #e AC !e2e!

110. In c*ndc*r

a% =a!ence (and is emp *n!(% C*ndci*n (and is f!! *n!c% B*# are *2er!appedd% =B, CB ne2er c*m(ined

113. T* resis*rs $R1, R)% *f -6 and )6*#ms respeci2e!, are c*nneced in para!!eacr*ss a )6= s*rce. T#e crren #r*+# R(ranc# *!d (e

a% 1)A $(% 16A

119. 4#ic# !eer s#* as pr*cess c*de f*

ac#r*maisea% A (% B c% C

d%

11. Sm(*! indicaea% E!ecrica! s?(% C#emica! s?c% E!ecr*!ic s?


24/27

d% E!ecr*:#erma! s?

11;. T#e 2acm (e #asa% irec! #eaed an*de (%

Indirec! #eaed ca#*dec% irec! #eaed ca#*de d%

Indirec! #eaed an*de

1)6. *r aircraf +enerai*n p!an indc*r is1F. T#e 2a!e *f

capaci*r s#*!d (ea% 1 ? $66 [%) farad (% $66 [%faradsc% $/66 [% farads d%

\66 [ farads

1)1. In *ne ime c*nsan, #e capaci*rc#ar+es *a% -3.7 *f is ma"imm 2a!e(% 3-.)7 *f is ma"imm 2a!e

c% ;7 *f is ma"imm 2a!ed% N*ne

#- 63!+ %+- ,6!5%

3- ;5%eced area f*!!*ed ( #e aer rinse

$(% Rinse #e a>eced area #*r*+#!i# #e c!ean aer.$c% App! s*dim:(i:car(*nae s*!i*n * #a>eced area f*!!*ed ( #e aer rinse$d% A!! *f #e a(*2e

228I= >2N28=$8 =N? $$8

>2N28=$8

1. Genera*rs *r5s *n #eprincip!e *fa% arada


25/27

/. In a - p#ase ssem, #e p#ase indin+is spaced smmerica!! s* #a #e 2*!a+eindced is

a% ;6* apar (% 1)6* apar$/:)1%

c% 36* apar d% 16* apar

0. T* a2*id armare reaci*n *f sma!! C+enera*r $1666 a *r !ess% pe. T#e

me#*d sed isa% Inerp*!e Me#*d (%

Brs# sein+ me#*dc% (*# $a% & $(%$/:11% d%

N*ne *f #ese

3. C*mpensain+ indin+ is sed in seriesi# inerp*!e indin+ *

a% Increase #e !ife *f (rs#es(% is*ri*n *f e!dc% Redces radi* inerferenced% A!! #e a(*2e

9. Sa++erin+ s!*s are sed in armare *f a C +enera*r *

a% Minimise ripp!e 2*!a+e(% Mainain c*nsan *p

c% Minimise edd Crren !*ssd% N*ne *f #ese a(*2e

. A -ϕ f*r p*!e a!erna*r, rnnin+ a3666 rpm i!! #a2e fre8enc *fa% 166 c?s (% )66 c?s c% -66c?s d% /66 c?s

;. AC +enera*r *r5s *n #e princip!e *f

a% arada


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a% ie!d c*i! (. Y*5e c.Armare $/:3% d. N*ne *f #ese

1. =ariai*ns *f .C. 2*!a+e +eneraed (.C. +enera*r is ca!!eda% Ripp!e$/:/% (. R.M.S. c.A2era+e d. Cres

1;. T#e (rs#es in +enera*r are +enera!!

made p *f a% Fi+# +rade car(*n$/:/%(% Fi+# +rade si!ic*nc% Fi+# +rade se!enimd% Fi+# +rade inc

)). T#e e.m.f +eneraed in armare


27/27

-. i>erenia! +enera*rs area% C*nsan crren +enera*r$/:16%(% C*nsan 2*!a+e +enera*rc% C*nsan p*er +enera*rd% N*ne *f #ese

-;. T#e main app!icai*n *f di>erenia!+enera*r isa% E!ecric arc e!din+$/:16%

(% ansc% Tr(inesd% A!! *f #ese

/6. If #e s#n e!d *f a c*mp*nd+enera*r is c*nneced acr*ss (*# #earmare and series e!d, #en #e c*nneci*nis said * (ea% L*n+ s#n c*nneci*n$/:16%(% S#*r s#n c*nneci*nc% ara!!e! c*nneci*nd% B*# a and (

/1. T#ree ire +enera*rs are desi+ned *de!i2er)/6 *r 1)6 2*!s fr*m ei#er side *f #enera! ire1)6 2*!s *r -36 2*!s))6 = *r //6 =B*# a and c

/). T#e dis*ri*n *f #e ma+neic e!d isca!!eda% Armare reaci*n$/:16%(% ie!d reaci*nc% B*# a and (d% N*ne *f #ese

/-. *r para!!e! *perai*n, #e +enera*rsn*rma!! preferred are

a% S#n +enera*rs(% Series +enera*rsc% B*# a and (d% C*mp*nd +enera*r

//. In .C +enera*rs, a iner p*!e e!d c*are c*nnecedIn series i# armare indin+In para!!e! i# armare indin+In series i# !*ad$/:1)%In para!!e! i# !*ad

/0. In .C +enera*rs #e (rs#es area!as p!aced a!*n+a% Ma+neic nera! a"is(% Ge*merica! nera! a"isc% Bisec*r *f GNA and MNAd% T#ere is n* #ard and fas r!e f*r #is

Basic Electricity(Panda Sir)

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