BPDB REB Question Bank ( 19 Sets )

Bangladesh Pouer Dereiopmenr Board

;Sdru,lmenrt\J'nin io- tor cr.:5,;nrFngrr(earur,1 Ensinecrin! (ti$_. ^ _- _Frcrricat r'me:LJo "our5 \ta"ks:t00 t:/ Ans*er th€ lbllowingqueslionsin Engtishi

iI+f b) Fromthe_lbllowing diagranranswer!h€question 2_2 lJ measure the curRnt I^D. ii) measurcthc vollageVr,^.

l.a) Wfite down the nane and p-opulation of rhe SAARC countries 5 !..cco-r.c.ec, ,r,ero,,o$ins b Ho!. l\c lri ficjarnn' Dhal,acr.1car.b.., rs6 :'":'?:r. , , n l , lr', i " rfduJrie, ( , . r \ . i n ! i . J t , u t r .t o u A Hr r m ; " b . \4enr'orc lnouf) f ] j | .nrrde-the .pnrr .e (. ) ouriLgg(.lion oa,tsDbdnt r. .'A..and c) Writeshortnoteon (anytr,r'o) 5 \ r(s.inriet.Lo:d .eedrng. (rr
"

v

\A:,;;;,r:-.ro're,m,nsi,,\ruJ:nK\A,

tr coF Zalilv-'-o'r
j

ot prrdtl(l .Deratur, u. ql@nh!JB< tL'ir 'll{Fr {s? ,J, ! h.ll ar.. rh( corroiJron. drrnnsfomers? ro.rl,i o I fl-+t li*i: l .,.rr a) {€{fit TLli'd {) c4fisFiti ' i :)-1 singlephasetransfonnerlus 400 primaryarms and !) E.REEfiFF'li? €) tEfiaftqt{}n'tr l r o a : r ' H 7 . s . e r r d n dr t r l i p e r . . d t u e i t r u \ J c r r . i r ) rr rhe core 0 976wbrrr-anC consideringthe crosssectional a r c ao i r l ' ec o r eL o 4 i r n : , h < , i nodu L _ : h du((d, Jlrdr(i- rt e pri nJD er(. ii) Inducedvokagein thesecondary *,indings. 2+J r j c , n . o i , l ( r e n Lbee \ v . . ( n . \ . i r c li ,. o t ] l ^ r n ( a/.r,,\\hat

,t)rfB Tilin

8 rF) a-tffft{r 6s&+nE<"rcsft tr+mr 1) a fifffiiln irtc qi!, )oo fiit-r Est ,!stbq4< utc{d,rG*iq to sE{cr4 q{i a-lfrft-$ (iffi:l]n {s?

( | d) ftE< !q*Fi alrao fu A rk.tt

E1€ t7 613 r En q'
C)Rr4tqfi liTs?gil firgiift q Eeft3]Tqlr*lg <{r s I slT tsFJI
E &

2 c) l)ra\, a sch€matic diagramofa 132/3jKVdoublebus 1 F) Kifchhoffstau,Rfu Ffl!' rlrrini: t$,, in.un e<*v+m"1Tqo<&d"i . rr..tr'ton r t-g. tbLr outgoirlg 1F* tu 1j Ieeo(tanda huscoupirr. .s R{K eRlqFrf{ {+i " r

qnlA err rD

dl u]lat doyoumeanby faultMVA?

"t^

E{ {{ilrFl

;ba

'{1!:3 ) .) 14ff1i{i: cx)=c tal LDc (b)OIC (c) EC (d)BARD (lr)SAARC 1) ff{6RE crdrTcn &t< ffi fr,{rs cx!=c T) {.!v q)slq .l) sit']l'i s) lffiffi s) Trflsl 'lransiale intoEnglishr I )o il{Erlrrid €dF T{q l-rq frfi $1i1 qv)E cFr{d Et& qrt!T{iz;l?B"r{ figr 3iitR qifis.{ fiER r-qqrq fr\ qtril I {{rR ,a siqr GGI {fta dtt{ Triq I qffi toqo rirFd {r$ rsrq? fi-{t fiE q cfuT cfu i!|re I dccustomed to leading lAns:Thepeopleoibangladesh?rc sinple lite.De\'€lopment of the countlydepends on the dev.lopmeni of villages.Expansion of Electr;cityin rhe rurai area is very important.covemmenrhas laken dillercntsiepsfor ihls.Th€yhavea planto takeelectricity roallpcople ivithin2020.1 e wri ( J Dafde'rTl on 'l \e{-ren cn\i-oln.nL developnienlson law and order sitlration in rhe country" )o


'l) 3-phase4-wire qi\ 3-phase3-wire Energymercrrdqnr !]q€q E{?
q< Systen Engineering € EquiFmentEarlhing.

sz{ffirvl1+? q)Effi-n qr .€i'fi qffi ctt rfi qi".frqr{ R1{{, qsffFt$d T{fttir c 'f) ,!+G fie\ b'tc{rs tll.4kv, &-iaq 500KVA 50Hz qnFls'l'fq.s crrF 1000AMPrheephascAir Transforme( qFtFl \4lcq8 ckt Breaker i) fi1qFirtTr '$ c{ls ci!6 qi{ qEF rRre rtridd ffiq"i

1ift*r+r*

ii) LT ctF 80% (rz
8

q1aq56r7.1ftaq B'4r* c
ql] rFfirlTfi), Il{-qa af,r-T (*1616Fa"ri

€Fl-A , Il-{-tc \---l ) ff[rd c{fts it{lFlT cs 4+l{ dfq 'f a{ fft{ 1 r c [bc<:qTa'r {q] JICA: IMIr. SPARSO, WTO, FEISCA, SCADA. SWC. q) ffi s'fto sfr(r.{ c<@6 cq{fft|rl{ ilI ft? Inlemational Co-Operation Agency. [JICA=Japan i6e: crqs" q*3rfq I ' ( nnbq}Aatt,- IMF=lnternatiional Monetary Fund, SPARSO= 'r fallt
-!. : o1+wa o6F\ *qne ftto'r c
s) {('ilqlfi

Esq fig lvlq ila ft?

e .a) a4E ef5! iR S'fn aF
lbs cse-+!gMr] 8

1) F(S{ in ,e
-3{

fr?

ITT{sr?st 9-6 .id {ftfo|'IR qi( F{i\3nqq
e lmfrcv wg+rwra

E1qd-ii {.R s,i&tr fi
{F"t-{,rT{-la r I F$lfi$ ((qmr eDs F) ffi{]s Ala (Differetial Relay) 1) sEl{ ailr{t ii(q (Over Clurcm Relay) .l) irtn {]ltd (Pl.inl Faotor) r) ssld.qs Fsltn :rn{ (SAG) s).r,Tfii (Corona)

lbs,t'R.sr"ilssRFrsc E{]tH"ro dF Ssn.rufi qrq]

t I F) 'l|€?ln +iir {qis ft Aih? r) ts14{qRt$E rtFl BlT{llnn .r.{Fi' stqR1{'4{qqtft i(IF.,} Tf{ Fr;r n) F]T n liri *lbllnn sIlTB+rq afu rfi ,a
!i-n $ffi. q
+iil q) ,gilB ll€nR E1{€i{1T{ft fr e1'{r4 <|{FE {{ 15R1r

fur t) rFI{b lfus{ f+?

s r Tl qlEili dlbg Tiliq cir IR{ s Ylft'{ ft ft? c) XLPE Ttlic61rmBr ft? nt{tla-r F Rq @tn

q e

c 1- 6 *r@

frFF4FlqT?

d) What $'ollld happen. if you keepopenthc secondar!oi a loaded C.T? Explarn

6.a) Stateworking Principiesof an Ahematortuentronrng its majof conponents. b) Stxlc the conditionsof synchronization.Erplain $e 01:n Allemarcr\aiththebus 8 meanlngofslnchronisiong any thrceofthc follo\\'ingr- l5 notes on 7. Write sho( (b) Svstcn (c) Di.ectional SCADA problem (a) Y2K Po$'er Relay (e) (d) ReveNc relay. ovcr'curcni

,t) $gdfiq s q{ sl6{ Ftiq rt s {fi? 4q-ii.]r{ rqle cq{'it c ft fr iifq{ q-q.iTia slr{? ql t cc'ltT iiq{K ei? a I a) c!fi ft? dtl s cqa{ a6Fls{c{r 'i q{ 4rql 4R:lJ{l{]!! Fq {) vedical c{tr{ cd{lT rl{{s' qIF? t {ar -r€t G{jre=f.|;f c.
!r Board \r Power Development Bangladesh e I 999 Engineerc-I lbr Assislant liecruiimenlExalnilration 8 | ENI J IN EERINC EI CTRiCAL .\ a 1 0 0 N I a r k \ \ - , , . / T r m el . l 0 h o u r s i, s ,n1 .i^ .t!.esinn. .n Ine'r'h rQue'ro N "'".*--.' qI u r l.a) Wriie in short, the implicationsof Bangabandhu b I aspecls economrcal

JamunaMultiPu4roscBridge over the '5 ofBangladesh. reasonsand rcmediesof Low voltage @ b) Meniion the 5 problen ln Powersecror. hasbecomcchampionin a lbolball c) ReoenllyB.rngladesh

\$

{ffZ{d cF€ili (sli {r{ ffff's {.!q4? 1ftAr 1q<{gq c<5fi6? siff{&cd qrr qgacdq{ q
qlir{ltt{ C{Fdl 50 | {'ii <1T{ CS? csl{ cF qq? ri&q +qqlF i]
liffT{. a) )b8a, s) ro +rssi q]d,))) )bb), )t) )bi)' )e) )sto 18lBr-' ffi.

.4. a) DescribeS!6 circuil breakef tdlr.q rfii\, )cl )b18. )5) fEg;- )q) iE_6iirr,Iaq< b) Draw a 2i0KV two bus lrar systen showing the )8) O )bl be{, )bl !b)e, :ol b€f{gl. t)r )o:!. }l) c6Fst .t{ci. tbllo"ingrtat FiqAt,\s) r{{.is, tB) 8)ssfr.fi t4) qmfu, re) sffir, (i) fwo generalors(l5oMw) each tl) qfi!3 ir{ct{,lt) c qcqrniall $) s.b'ftfr.eo)!b8a 15.75/230KVtmnslbnners. qrir, r6]n cTci-\l (ii) 4 clrt goinglincs (iii) t\\o 230il32KV iran\lornrers (\ (1) i) Isolalors CT S Bus PT'S liv) frsl't-1 GF{ffiq)' r1q-co 5. a) Why C.T andP.T areused? r $FiFllird rtl{fifr c{ffeq-rsel-fi'lqdl <{ cra?llq{g b) What,lo )ou meai by thehee ponrtloliageofa C TI 2 corccFtsft? qTFd t{a.qq cr !.${'ffi fi={i | ffi"r c) Draw lhe veclordiagram01a C.T - Phasedia - P T 9 c{ '{Irqs6. ,nt5/9t'o E{ {qFfrd

c{Gc ae/)) 6fft (stl-Bfi $ ccq Efi€]Trfi Sftlfr. t+t+,o+e {sr.isdadnss? fir Fffico Afirtrn4'.{tqi {n F{? Ff{rf{ li-cfi r I W{ %41fr? (t{6 ao af {€31r S-rvw s8o 6rnv, ao q6, b c,tt{ lpti'ra rATd fq Fie qm.{T baoI Es :gsi.F rqihtTn6dtrdtqpeq ci ffi $qr \+t+8 er F.TdFlf qt{ TRTbqi( ,t't .cBs$6 ,ffi
,.t

,yr"

2. (a) Discussdiferent protectionprovidedin the Againstvarjoubabnonnalconditions. generator 9 ,h, \ hariren-:rrdryano1.1(,--pprcrecrrunl l\r.) \"cl'.rf pro.ec.ron i. notg.od substiiure lof berrer n a,-,enar.c. ,5 3. (a) Wlai is scquence net$,ork?Discussalllhreelypesof sequence nets,orks? 9 (b) A threephasetransmission line operatingat l0 KV and havinga resistance of 1 ohm andreactanc€ of4 ohomsis connecled to the generating stationbus:barsthougha 5MVA step-uptranslornrer havinga reactance of5%. The bus-barsaresuppliedby a l0 MVA generalorhavingi0% rcactance. Calculatethe shot ckt KVA to symmerical . 6 laull betweenphasesin it oscurs. jl r, lf( loddcndofran.missirnline i, drr.c hrchr.kage rcrm;nrldl iherrdnsiorrrer. (a) Makea comparison 4. betwcen3-phaseinductronand v L lfi{-{ E f{F fi Q{| td.t Fsir)o : sl/nchrono!6 moters, 5 +) s'Ept{fiFFrlir rs F{ fiE\ S3{E{ {nDss ..,........I D'sc,r.s.elr (hJ slaning of I.ph$c molors 5 {) qltr-r fr-{ ft
srqli *1c{ t{nd" qr .............,.. fuc{ | lftv X) selsi€ Efefi{ c]|{ 1fr vam qlilin fu{ ..............ck r 4) q'ft {sRbG?&B c&$ic qd(E.{................. r I .lr{n iiffqdiT u .t(F4FBFi E]nsrl]r ft ft Ttiq
BangladeshPower DevelopmentBoard

vlClc

RccruitmentExominarioir lbr Assistan!Engineer-I 998

Electrioal Engineef ing S€r-A Timc:2130hours,Full Marks:100 Ans$'eranysix llucstions(Questionno.l is compulsory) l.(r) Descdbefi€ economicalandsocialaspects of Bangladesh Bridge. 5 (b) M€ntionthercasonandremediesolsysten lossin (c) In the lastworld cup Fool Ball: Who getthe goldenboot?

c) Brushless excitalions systen d) Push-pull ampliier e)D.Ctransmission 6. a)Discuss SF6circuitBreaker 8 b) Diawa 230KVtwo:busbassyslemshowing fie 0 lbllowing (l50MW)eachconnected i) Twogenerato$ ftroughone I 5.?5/230KV transfo.mer ii) 4 ourgoinglines iii) Two230./132KV transformers iv) BusP-r's

5 5

Narnethesladium where!!c llnalgamewaspla-ved? Who-rasthereferee in tlrel'inalmalcb? (d) Name the location, country and date of receni Nuclearexplosions.Mention world bodiesre-action. 5 A f < ) C i i e \ o u r a 5 \ e i . m e _ o - r h en r ' n r i T a u c r g ( , . r a l r o n p \ . c ) r o s L j r d e rr m p l e n r e n r a r i a; .- B a n p l a d e s h . 5

F{

7. a) Expiainthebasicprincipleoftapchanging oia transfonner.

7

b D ( r f i o e l h L l o \ s c qo c c u , i n . r l r J n . l o m e f d n d \ o \

h<)

canbe mcasurcd, c) Dcrivethe felationbetlveenthe losseslbr which maximumellicicncyis obtainedby a transfbn]rer.

.4 4

BangladcshPowerDevelopmentBoard rbrAsrislan'Lnprnce-
tr#4& 'q&JY

set'B

EI-CTRICALENCINELRING

Timei 2.30hours Marks:100 Alsrver any six queslionsin EngUsh(Questionno. I is compulsory)

I.a) Describethe economicalaspectof ChitagongHili fl"ct PeaneTrealy. 5 b) Menrion the reasoN and remediesol Low voltage probleil in powerseclor. 5 .t|n-(o6. .1[?-oi./\,1, 9 rEFrr{ c€

will takepart in a World Cup compeiitionin c) Bangladcsh

\ Lq1{Y6 {{{

&'t{ r

finil {c, iEclfr{ :1|4 qR cT{ld G

,er :oEil{r cmisr{6icsc
c€ n|sF6 qTtglobu

I 3. (lr)\lhar arethe ditlerenLbetwccna curent lransfonnef 5 anda polcntialtmnsformer? (b) Drawphasof.diagram ola potentiallransfbmrerand discusslhc causesof ratioeror dndphaseangleenor. l0 .4.(a)Explainthc drincipleofoperationofa thrceph:ise l powerimnslbnncr (b) Assrmingrhattwo lfaisfoflnerhavinguneqlralratios jndicatehow ol lranslomationareconneclcdis parallel€d, 4 lhc total loaddilidcs bctween!hem. rs (c) what shouldbc the KVA ratingofeach transtbmrer a V-V bankwhenthethreephasebalanccd,loadis 40 for KVA? Ifa thi.d similartransfonncris connected whal is the ratedcapacity?\llui opcratlonin della-della, plrc€nlageincrease 8 is l?ling is effectedin this\\ayl difterentkjnd olgeneration 5. (a)Givea b efdescfiption l0 in BPDB syslem (b) What is dcnrandside ofmanagerncnt.hoi!can \\,ereduce j gen€.arionshortlallby adoptingsuchmanage enll 6. Write short nole on any lhree oflh€ fbllqwingi

8

{) fiw\'d

.qtsi'i&( .{fi €l< s,fiT iqr6

ql4iB filR i

q.||ITw{ | l.( {) ]TrElfir'rd r{+R 'i.t-cnla-srq ftqr{ cs< 4 T-1164aF qsqni';[
.-) r tlfi Et{s (m4{]Tftt4G)s

.l)tui]{ wnls 1) Sldra6i {)Frilql €) Gr{qF|.{n F) i]ffi qsln qftsqlsl p) €Fi{qh{ l slit F-Flq|d D

9:4

\e

q rT) ftGFc{FnfrF csfthFT crfrc +fit ii{

{) tfi

aF'rr{BIri qt{D'{ l...i6h

rqGiqrelFr

ffd

b

rElrf ]IE qR c{]r rli c{@ {ql

e I F) frTtr3ift*r* dfll

'c

rc 1) jtqBTi'Fi{Tqeftts{r qr as'Er ffi b"iTf},.lSliql1i$ git-{'lT 5t)fq \cffi Fhfi ,4aF {sfln EEqirlFd ffiEnq c i(rlrFl fili{ | q1( (rffir.q cfilE I sl Rr Rrr cstsl 3 | F) ftifr Rrr, {.{.q cgfi- '?Fq .'niFi1.a"'E a6 ry-El lrq fsr$rr ?Fr\rhs <'fa , q \' (Fig-l) ql\ {) fi'c{r 6-dE.9 a) A s B blffifc4d .r&'sirq {)fld

line protection 3 a) Transmission b) Reversepowerfcl3y c) SF6circuitbroaker d) GasTurbinePowcrPlarl l e) Ripplefactorrespeclo{ reclifieroutput. 7. {aiitate thebcncfilswhich arederivedftom thc applicationol shunrcapaciloron the loadcndol a aircuil supplyinga loadoflaggingFowerfecior. l (b) Dr€Na comparlson behve€nshuntcapacitorand condenser in fespec!oftheil apllicalion synchronous 6 oowersystem. Fie-2 Fig-l in 8.(a)U/ri1eshortassayolr ''pd\aie sectorpaLlicipalion a $bc{d lb? sqlqihsl '. a rF) &fr C{F'iirF 5 powcrgeneration in Bangladcsh ?i)jtff cqF6.dFilr
ffia

6oo ff{s sit, t tfure 1l )

\tgr_Y dFi-i, Tr{-tc r Llqld< !6F q$-4{Sr{n ft? &fr csfiilqirFs 'i1ln '

c 461Lfi{tdi qd*tr
.

(R ffiaq'6.fi?t9:./'!rrr'

s LF) nlF cqllrii{ Fl{@i{'Rqq{R1-"tfr 1}ftr 1) laFEnq<*
d

c+c ft? 1r a$fu .!Ht_ari n5_sl 8 , F@ fiq-r Flns E?" s_${'t a? {F sil\, "n'js 4?tr F

{hfl.t q{tr €RRsitcsR, qFF Q-iqqB-,sli,eilfffiBlr{rctdw sl" lRcl,l Tkts R{I{ | qdtrfifirfi

ldlqb$tlTrfFTq

a I F)
,rFS s{lR( slTFlFlE(Ti

132r-V {di(g i} F'Er? ilrslin.'F
+;mr.rvfi
rq{f

itr

@r.

a) 50 qR.rq ssfr qnnnBri{ cTfi ir"lt rs ltt-{, sfi i$rT 4 'l' c{+,!R so qRr4i.I
. Suggestion for trlEE

i ' t h r ri ' r l \ ' r r L!:l.i rJ-.. , fL,(do rac.n fd /' \ l)! BtrL f. ( M,'1. Dit,,L"'' , "". :' . " ' r r H r q l ,in ri-.rir- ^,: .00 ,,,

c

!.r..

, o'l u

i'

. lle_J

. ?husr Idions . SmallPrmgfaphetc. l0/ 15 2 GcneralKno\rledgci Electricrly' \4iristry. CurJnl Aflairs (Gaincs,,{wa.d€d' \ovel P.i1eetc) l0/15 3. Mxlir(LikcglvlBAofDU): 50r'60 1.Dep!fimcnt: 10115 . Vdry ShorlQues!/ ivlaQ: 'li/40 ,/Ivi.1lhemaLicalr lledium Quest " Cir.uii: (lx 4) I)a cilcuil solutiolr ('fhevn L\{axrr' Powet, Super positicfi, Nodal Analvsis. Cosr!'ler circuit etc ) I'ICQ ({t&n sfu-sl]f{ ck€ ct!$ sftql .{C tir':uii: {114) V=\ Sinwl' Pol,rr rec!relaicdprcr' AC litniiamenlais\l

' I rrE.ra €t

Eqrivalentcircuil ofan Inductionffotor SliDand fclatedProblem torqre andslaflinglorqu€ Iruifload iorque,Maxirnr'rnr relatedProblem Powerslagesin an Ind olion notor andrelated

. . "

l{l/15

L Erglishr . Tfanslatrons

nnd$rth circuh.trv to solveo.iticalconllglLratron pNp) { lx 1) 5 4, 2. 3. Readsunmaryfion endofthc chapl$ Op-anp (lnverting,Non-invcdingandSu ming (l\'+) amplifier) wrth ht;gfatot. Diiferenliarorcircuit(drawo/p cutu-cs wrves) i/p sine,squarc curle) Acrn'elilier (drawcifcuit di3gfam,Response rnpLrl' dragram' Draw sinqle& thfeephasesCifcuit (lx 1) outpLrlcuwcs(Rcciificr,hveder) Digitrl Elettronics: (Lesslmpr. fbr BUET Exam) . Showthata positive-logicNOR galers fie same phvsicalgat€as a negativelogicNANDrnd vrceversa . Showthata posliile-logicAND gareis the same -Jgiri . oric u( and\ ice\
gI{F{ }1! G'ss \t-:E)

Eicctrcnics: ('lx4=16) alampeisCirclrit{Drirv iip. ,J'rfculYe)(lx a) " Clipp.r, cufvesiall corfi guraiions) . ahar,rcled:,lics bia!' Elnirlc1.siebllized . LtL bieiirg 1Fi1ed-birs. leedbick $il| \'oltagc biss Vollar,e-i:\'idcrbias.DC

. . .

Problen'l Why staficfuscin InCuctionrnoior'/ \Vbaris synchronizing? Condilionlbr synchfonizingofa singleandthrecphaseAltemaior

.

lvlolorand ComparisonbeiweenSyrrohronolts

lnd clion Motol Co!nrnunication:

. . . . . . . .

(ir"l=12) input/ouipuL (defirition' N,lodlaiion& Demodulalion \\avefonn.mod hlion irdex, equ'rtion,andprobleD' DlgitalNlodulation(inpul/outpu!wavefonn'equatron) Nyiuist SamplingTheorem 8it Error Rate(BtsR,\relaledprobLem DcfineF-rlarg.One Erlangandfeidtedp[C'hlems' OSI.efercncenodci andluncrions 50rial& Pardlleldaiahansnnssron relaled Clereral.PorvefandComniunication

(2x4=8) Powers]sten: load . Loadcrrles, Load duation crrrve/Chrcnological

E-{ CfPns

ca nIf&r6 fl?q/9bo

load,Maxrmunl Definitionandconcepton connected dcma.d,DemandI'aclor,Averageload,l.oad faclor, Dirersityfactor,PlanrcaprcityfactorandPlanluse iacloralsorelaredprcblon Whatdo tou ncan by powefsyslenl Draw a typical powersystculoneline diag|arn Poscr laclorandrclnlcdproblem $hy highvollagetransmils? FerrantiEloct Skin Flft-ect CofonaIltecl Reiaycir.uil andi1soperation Dill'ercnce belweenSwitch& CB WhataredreFaultsii a po\versystenl? line ruling Transmission Variouslypesolsub-stations, Vohagein Bangladesh andgcnerating Conccplon Crounding,LoadSheddingandl-oad Management Advantagcs of Interconneclions Conccp!or SCADA onddmw ifs.Diagfam energ), Concepton Ren€waLrle diagramancl fhc One-l;nediagram,Rcactance Diagfaln Impcdance hrporlancc01,l,ordllow s dy, fclatedproblem liom Load-ilo'r siudyi Whal iribrmaiior obLained Whalarc SeqrencelmpedrnceandSequence NetwoR? diagrrm lionr Dra\r Rca!tancernd Zero scquence one-lilrcdiagran]

o

trtF€

€{"r'fr{ "rAFt lis-licrtsst8q

';

.!' J!;-

';1;'

z,

{) frd i!.-s qrEft.t FF4ei) cc'6Efrcn Fl.r+,r<\ (1) rsi.dq v" s v^o. " t-l I -;*',.

L. .;;-

1) eFrfu ccE 8

.1 i

;:t'.*"

e | {) lGfr.s-dr.ifi{clg 1-{rr]tr?&fr cFlc}.dr qfi qel c c{cE{rFfr'$ )o r6.q +f{ 35*.r r {) &fr cqllritT{ {{frfr

qqq {) &F c$ir firs 1+dqt{? 1Gfi(!]ft{i sqir cql i{c{d C {T BlgC+rFl I

)o +r( mG nG-o +f{ ro r x) &fi crFrT4 glTR € 8 s) $cE1]rfii i(qt 1i-i| {tr]{ ft-sftTE]n{.ar rc f+th?

!o r {) &Fiqirtrii 'tJE € d{.i\G+6Tqfi q{it rF)EtnEIll-fi InF\ KVA F r'rl E{ cq? c !o {) ElqFfiri? clr6q {fis
q€ T) fuF.r{ .{Fr{{ Ifrll s qRn rT
c

q$<1,6r&*Jt'rdbfi slfilqlr eeRbtd"4{f{ | c r rfrRq ts'irt{tqtanl6&d ffiE nqqb.E{ i$I r 4<( !E]F'F) fi$ liqmS Frrrrcsi fi6n wRr, F Gr{+GF

l{hi 1l{3t'qFrtd rqftT4 t{T$FOnqert6c lI{3 e sa, .t{t$ )oo

i'ir{qs c{3 ! rF) cSFfinft€ri4(Ihevenin'sTheorern)frft1o
fr{,) 1) I'fi rGfi fasrfl (SuperPositionTchofem)fr.F Ffi ra r) fi-6a\ t ,! flR qGfi Fl.slfl
fi.{ €Frfu Tl.idi {'n fi{-{ T*i

I 15)fiqi\-e {..efift q+Tar) .c$tFrrsq 1) er<]Rsstrn .!
'i\3qlR4R Ftffit flsr'F TqF ff nr,lT? t, I sfr Ilff1b ffiE q{{, $'.sq 6l{ ,!i:. csa i(ql.l fr@ rl$r{ 6{4 | c q< gR( c stidG fi'{{
6<16
oF,t'E , ${3 10

) LFsrlit{s- F) rs'lBi"r4{]tfi 1)ci,t str{ s.q (q{frF {) qfifsltr{ \) nRrftr{ ftq s)El4frfri

i I IC i-? ta' rl-16 s@ i.fu Ffi P-N Ellfi n q{,ifr{R )+8+d curle3i]!l]lqfi €t-qr.s s< charscteristic .l) 1i 3sig {) e I r) tBRrrb t-'lsRl|c t-Trld SiF? s) TfuEt] fi q4.{&. Fl1dI <"r.sli {.4q I cxq=)o s) Ftrsfr c"lll
r{ rr{i,rlq

(€ 'fftr({r6.n€slubs

l, El( rror,icF'n'\.ionnftc. rds$1r: g5 +o rro
fiisl

Elti rjrRlTi -ftBft?fi

ft-qr< *rq
c

e In&€tq F"{{so) fiFFf
{) lG{.rs 4:tlt.s ffi .q.ilw cFq'll{Tt +s?lBqs )lo"l ,r) R,l-q61aEh&.{+i,irrt I, .43cMfrt{ |

F) Inpedencc s< qqT € qf{ R? s) J-E41Si T{Fl} Sll{? q1L1'& 9e

a+8=t TtHsc-q-q{ lqFF h 6 .s3ftF rqF {dls? {) {nffiFs $q t+C=q a I F) q{:lfr-{Q 31 fifi{.€lir Fl!:F li4? Efi{
tt qq*fuwq r q<( {t6t qalis @lraq 't) P.r- q{lfi fi Fonvdrd Reverse Vl Chafecierislics{t{]l Ffi | s i {) fitri €lFtT{ *ave guides '4R b{fi<

) rT)x{ilnfrlre

I,l]C, oIC, EC, BARD. SAARC. (lonference. , Olc=Organisationol lslamic tLDC: Academy Banglldesh LC.,EleclionCommission,B,'\RD= -Asian SouLh RC= SA lbr Rural Developmeni, Regional Cooperaiion.l f or Associalion r) FFfiRE c1l{r€ EF rFl F{.{,3i) T116 ii) iFFi iii) ql,fFl iv) flERfu v) Ttffi |

iii) t.:Ir iv)ft'S v) I6€nsil icqfr ftlr{ ii) €{|ft elr-e,E&
{) rD, rx4 c]\ rEl\4nodesr-t{<{d.ffr

c

rrTdi

r


qrr-s $ q61, +-r*. Zdirqal"o aFl16'.11$tc c F{ie.sid|{ 4ft'tf{r 5 !filanrl*sll{€Ai ESCAP' i\,{EM& SAARC,ICDDRB' SOFA,ECNEC' \5 t r1.lio. t l rq c+Faa
sq]il l "t{1&.1I|{ l0 t rTransilleinto English:qqs qiqr{ i-cl; ctit-F I ti
>Lfi-cr*crlb€4rtfri cs.fnafrr 14fl fr-*i3

t

IICA. IiT,IF,SPr\RSO,\I*'IO IEISCA' SCAD'\';S}VC r I FFftFs cF'f6F-{$s{A-i {! ft{c I qlqRsrls, qeitr{i, Trilsr, B-s{ c+lfrqi€{ffi$ 'n{€li?e qlr.v B High Commision:r e Amhassador a 1) \\ftite House.qRcratisPassportr€? c 8 rl({qleq{i16Tfle q{ F3 sL€ Rrql'fl elcfri fr
"fad

-?fl4dr

@6!

f6!

€,
Elr3, EE!$ (ir 64F.cE q.rrFqcqfufttd3

MOSFE], SCR.-Filter Ci.cuit, Tinre Dclay Rr'lay Scnri Conduclot.

.'F r, tE c4Lcael{lE qlEEs{ fu) 'ecRaor !o ) 4=!c F {is >

'

qrf{rlE cl*l<, PCM. {t{ER € qffi:Fler{, {n'{]e Gl € qfrr4l.Tll. T{ W( aflFl${ ciinfr-€ FFqirti :r{' F trF €& NoR cR NAND FRi, $1't {FF Ftc c6ifiS' bE{ lvrE liirlr frir-F fd-{ .rdFET{r.. !FG4-{ !.c )o=)c r ' f$ffio r€]{ < f,ra?'t6 6]' olFd €+a: glrfig. 'aND ccd,TnlEc-di Fl-Ei.{* 4iBfit ai!l{. &dR

cEn.iilE r{ fitu r|{ tr'F NOR('Ri. ,fiFls4Etnffid, €..{snffi,Irdffib qfiFFr r

e I F)SFiEtil{ ft? t{R lldl displactment lbrce (13'l {{)' 51"1 t r D', rJr. ) EllEro, i..ft c&-crr 'fts d'4i ?"?

-'*'"u *a" a$furi a6f{6-ra rprcr r Frsr fur b{ q "t 1i9.r{{lq+.ifu {{+fufi-i I

E{ qi{rd

c€ ,fiirc$6 .n5gi/\r b !

8 rT) (bFffiGrrsr6 ft T{ts qr( f$d rlq ft? ,{TfrdffffFrR( \ctq.qr. &r,ril1n,qli G*q, qfri. (T'r ({ft.r sF), .trfi( Fildc{{T{snldF qtslFfi v T]l,llFtrqi\ffiEffi1 fF 'r' . {'ns co {) !fiFfir ft? {frFfuTd fi'(a] cgtis cnffiq q qn'{A{k TI{Tffi+fuTFT 1 ) | t{.6d rq-6c t 1.rmr eafr faBiFsFl \'lF 6ti E-€tF aI ii&]Efir ftfu{ ftr bclR$fq frr ,q'rlGr'R.qt E a-€rTdqfqt{ cEfi r 8 ") {5rqil!ff b6"{{{ W{d{S.rTafrd1ffi +ffitEfi t. \ | sf{str frEr{ Txrls {cG lEa|dr ff$i.l c\&{ ric btn.tq{ g.4?$r{sffi{ qfts fi-{iq ft ler{fte *Es ft qil sx{$c 1)frili T9 affir € ft ft? qfr{ frbl&nFl{q.ltftifii €r r e ."Fr(PAL),crsrr (SECAM.s{.fr.qrfi (NTSC)4r SE.1E-qtfrst { frrfi Et {.{rE sl 6@dcRftlr wffl ir]l}T 9ETITET qEEfl5;nTf{

I

.

V

{) qbr. ?ird.{gfsa. qs,€ {gqa3?b56n-l.6+a{ fu r q


s8t, rF"t?,qi:\c

{$+a :oo

TiF{ r v e crb€ {f{r {E \Fa?FT' qr slq ft? qsG c{.qr. 6G€ q]{{ qqs {.qd .* sTntdFEKr{ *< sFRdr.qr itcr.v f$-ffi rqq rft-Griqrnfrd T|qftslE'g{fiq | !o sqTftqRi 8 | T'ftqlqrTfi 1??{Ftwlrdiqfi d{ qftri q(r.q i.f{ {tri I qltcalE(q'fii]Tq6qneFtTdfi-srrr{ftfi{{ s qaq '1tstrli stql EE'{ F ftElr< {ls a| l6fii ffi$r qR-Ftdq "RbFrT.lT iraFa4sfa.fiEiT €i {ttri q'Rl €cs a{t-iglr+s rfis+ifr{r{d,ifr v fr€tarrFl'lttrstf+ffia<

i

F) )coo CI'li s{b

a rc{ cq]n{bfr r-lr6frit Ft{- TFsr,ftrsc, Qfr,{cfi,$.i ,t) $oo arln erlb.J !) c e LGlfil-li" ql q€lri G c 'l Ect {ec eER,sfrct-*]Trn(F,tsqEfr, tEfua En31. {i' tc ) FnFfiE beo&-dcrhF rEr il Fqnqd ft'{{ )xc=c ii ftT{6i"tq 1fr{fu r$ fi{t €Rlfu {{ | i) {R@lF1i fi fi.I-alslTt{wfr-$ fi']lt n e'llERq ei I ,t) i{ (irF fr{ft-ir{ c'Rr q{i$rs ftfrf"- el{mEt qq I {) vrlffi fr6{ T ftqG$n c!ffE cr c{|{ 16I{.6Tn i5ffr6 ,t.fi,isgdmE cfc,lqdE{ I qi4$l Tc I sq6rtn.LTd s) ql9 dft-dn nr ffi ffii qfr$ qst q(n rrql l{cq {fA ird ff'{s a rI ll-drfifio .s@ T) ihr 4EK|R\c.r.$cc'E{ffi{ ffir F-{q 6BE r {) ffE\ qir{i rfu Tfur$i.ltuIiifi -I*V.6F L 't) q{({{ i1{'fiF1j'tq lrilrd s{ E{ 4 4@lgjEarq '116 qRreq/ lo FEar rofuqi {tr{q {6r eoft.ql {triq I !) c{Ti 4ft-
E{1dI

s) anfdt'F c-r6" aiqn E{Irr "baor Qe sfu rr+rr ooo eoooff{qfiAr I ffiB? e rffifisrqtr:tdfi-d q1€+&{&qwq wr." )xc=c 4Rn iFE( sTBr, en({+fir sr.rfs, {flrq d-jdr'R Tr&f4 c&$?, rng.lFlFEln qlFshl? | 8 t q-{Eftqd cs@FFfrfiv csftd 'tqefr di ft {{tT? 8 MTU.TRF.SCADA.VDU, a Ei'l fr'$ (ff CTFefr)r txe=\e

-90

iaoo cTn sflt

ir) itqsfd ({) {g (D iEtBsh/ (!) dtd{ffqRis q I 8 Sl 'lirs qli rR{ct niTlq-

+yvmfr*r! (1)qrfr'{ ('i)Gbltu& (!) csq*fi |

a fisEtr $d $E 6lrri w {€qT ,4aqi{ ql4 ql cr]R clc6i(i') )bsb ({) !br\e ('l) )b1c (s) )bt) rtr

v fto< c+nFffi'fil{G) lqRR a9t ({) ft!*]ITd av1 ('l) \irs (s) fflhs rn r | ) ,iiEs ,fiFdcj{ a it{t E6{) cTGffir c]T+q? ih) )o ffi (c) )) t|{i{ (4) )\n|sl G) !r.ao b|{l r I {!!l|tEelTT$ff qCqC{hBrrfTil {{(q) 6@q! (4)rrrM (s) slq I (r) lFil{Ei l
(q) i|lc'{i r{{nl ({) fi*.rE e.t I

({) €ks"l ({) {ttuti (,1)ft{$i (s) $qt r I )\ slrrfln.TtTm..l-dils{ft(F) dfifl (q) 4t(sft{N (n)iRsR (s) slR"t I .)e I q.{riFlTR qrfr{ Gqr i(q|r?lFl ft_ c{) F, q,qE (*) l$, qq,q{ ('l) .iiFiN (9 r{Pil L

rc rqnrr

c€ nErdr6 fl€-s./9b9

!8 I 'Sr Gtftlis--4flcfr{ rRdT{ cfrfi-

(T)EtFRlrrrfr (1)sq"*{fi {

({) wGs cqff{ (r) rs,GsdB

)a I qsEi?Rqil I]R qs-qsffi crF cqifi lFifi-f? (F) *qri'iilv ({) FBe-{rs{ (.1)l('!ts (!) rilTtr4tlsr )s I a frFw{ {41TTq? (T) aoqF ({)ac{tB ('i) ao 6dG ({)cooffir! lq .ci t{di fqrnrDftfw ron {F E\r frsr (e) \8Vqi ({) {se/i ({) r8r'& (q).s]r6c6.{ir I )r | )bbt qLqr Rt{l{ frRrLt Trhq{ fi fiRq cr {{? (?) ffifi / (q) Ecr|{ ${ (4) !ir{ wlfr{l (\) @ff!.I "qt qca ft{ cs]lFr >r rfu cfb cq'rq'ciFldor-,!tr (r) tufii ({) qiTdlr'{ ('l) }Rn cflritun F) Tir+{ r 1o Lwt&r{6 o]Ire qtG c+r (a) qfi13r6sF 1r1orr9
(a) Copper (b) Siliconi (c) Neon (d) Lithum 7. Wlich is fie highcsrsystemvoltge'inBangladcsh?

(a) 33KVACr (c)230KVAC{

(b)ll2KV AC (d) 23oKVHV DC lilk.

8. For an R-L load (a) Activepolveris greaierthanapparcntpower. (b) Reactivepoweris greatefthanapparenlpo$er. (c) Appar€nrpoweris grcalerthanbothacliveandreaclive

(d) All the equal. a. OneHrf5r po$e-; equdlLu(b) 55.00Fooipound/Second (a) 5.50Foolpound./Second (c) 550Foorpound/Second\i(d)5500Footpoundisecond. 10. The radng of a iuse wire is always exprcssedin(a)Anperes{ (b) Amperc'lolls(c) Krvh (d) Ampere-hours. li, whioh ol the lollowing is linear and bilateral - 'J' l-an5i.o_ /b) Resi\ror pJrarrelef (d) Semiconduclor diodas { (c) Elecrrontubes 12.Cellsareconnccledin parallel (a) To increase the inlcmalresrstance (b) To increase the vollageoutpui (c) To inc.easethe efiiciency lh<(une- capa(itr \ rdr To.ncrease is providedthroughll. Satellitepowerrequirement (a) Lead-acidbatteries (b) Dry cell (d) Nickel CadmiumCells. (c) SolarCells{ in 14.Theenergyis slored a ieadacidbatteryin ihe tbrm1]1ra I ii6d crF fi1fr nfut qtcfr{t {{|.qr'i]IqE6? Energy (a) Electromagnetic Energy (b) Elecrostatic ($){Iqfr (c)rr€IT (4)r'ie/ (r) nlF (d) Ene[gv \r Chemical (b) Chareedions ffqr cs]Iffitq c{ff rh t{r r1!{crBl q{-. 15. A radio slation broadcastsat 30n wave lenglh The tg Ldi ffi (1) v'ifrs 5t c'llT e) snsT'FF iiequencyofbroadcastwill be('r)ffilacr F) cdroc$'{r? ri ( a rJ 0 H / \ o l j 0 " H / , J 0 \ 4 H l \ r d ' 0 K H . , c{h cEr.F il r tr
(a)230v!

6) 440V

fa)row!

(b)3ow

(c)2s0v

(d)380v

ol creeptngoccurs1n24. The phenomena (b) Voltmeter (d) Watthour meters! i r )'so l r < . i . r i ' L n . r 2< lre (a) Ohms (b) Ohmrn! (c) ohm/sqm (d) None 26. Threeequalresislorsol 100c) is connect€din series acrossa sourceof E.nr'f 30V. \\ha! would be the power r,nsur
(c)9ow

(d)6ow

il. wnat ir lhe conditonlof maximunefficjencyof a (a) \\&enX-formerrunswithunitypowerfactor' currenlcullentloss (b) Ullencopperloss=eddy (c) Whencopperloss-hysle sysloss (d) \\&en copperloss=honlossll 28.Thecopperloss of a transfonnerat full load is 40W.

Whatwouldbeal halfload" (c) 40W (d)160w. (b) 10wI (a)20w with ol a PF whenconnect€d obarge be would 29. What 20V supply? (d) 30FC (a) 200btc 0) 200i1C{ (c) 300!C iors equal water 30. Onc cubic (b) 628Pound\r'ater (a) 74.6U.S.Gallon ; (d) 28 3 Cubicneter' { (c) 2S.375line conditlonIt. ln a resonance

(a)x,.=xctr(b)z=x,. (c)z=xc

id) Z=R2.

41. Does the transformerdra* an) curcnt \ahen its is open? secondary (a) No (b)Yes{ (c) Take rated cunent (d) None condenseroneis the synchronous 42.\)!4lich ( apacirol Elecrrol)ric far (b) A capacilorbank (c) The combjnationofinductor& capacitor (d) An excjtedsynchronous motor' 'v 4j. tl'hich pheno-"ua i" fenanti efTect? (a) Wben receiving end voltageisgreaterthan sendjng endvoltage l (b) The variationof frequency (c) When sendingend voltageis equalto recervlngeno vollage. (d) Noneofthe above line 44. The sagproducedin conductorof a transmission ondepenos (a) Weightofthe conductorper uml voltage fb) Tensionin the conductor 'f," *"a*ror ,., i""*f, 1dr All ofrheabore / "f capaLit)ol Baigladeshs generaLion 45 lot:l power

t'lw(a)ztoouw! ln',*lt*rt ,0,,,oootw (")aooo possible the greatest +i. e SOn, iltemator lYill run at

lor th€ !i. wr,iil pi,'*. factof is more economical

speedll it is woundfor(a) 8 Pole (b) 6 Pole (c) 4 Pole. (d) 2 Pole.v 47. When speedof an Altemalor rs changedftom 3600 Rpm to 1800 RPm, the generutedenf per phasewill

(a) Onehalf (b) Twice{ (c) 4 times(d) Onefourth +d. rh" ."ge", (mega ohmeter)is exclusivelydesigred (d) 0.85Leadrng. for m€asuring_ : j. rrrhe.Jxi*"m uulueofa cunentofa circuitis I amp (a) very highresistancetr(b) Very low resrstance (sinusoidal nave),wlratisiheR M.Svalue? (c) Groundfault in PouerIines (c) 0 637Amp(d) I 5Amp (a) lAmp (b)0.70?Amp'/ (d) Overloadoir D.C motor. 14.KVA is equal!o49. The faclorofan R_Ccircuitis_ (b) KVAR/Sin, (a) KVAR cosd (b) BetweenZero and L{ (a) Zero ! (d)Noneofthe abovel (d) Beiweenzeroand(-) Lo (c) KVAR iand i"i I-^ powd ls equalloAC circuiti\ givenb)power Aclive facrorofan 35. 50.The (b) VI Sine l c ' F Z r d lt X V l s i n , (a) FZ L a t; l c o . d v r b l above. (d) ofthe , Nore {c) vl CosO! it. The phaseangleofa seriesR_L-Ccircuit is leadingi1improvementpo$er faclor for 16 Which is theused rrrXL-0 \brR-0 ttrX>X i rdrX \ motor (b) Commutalot (b) Springmolor ii. :r *r" po*.. factor of a cifcuit is unity' its reaciive J ,.,Sun.rlono.,t.o,or ld,squrrel'asernoror. (b) Equalto FR J7 i a po. I pha.e ;nd,cl,onrrotor operae' fiom a ia) A maximunr (d) A neganv€quantrtY' supplywhosefrequencyis 50 Llz wllal is the synchronous (c) Zero{ of 3-O load is "abc" the phase sequence po"lllu" ij. ti b) 200r'rp''cr 2500rpnd) l500rDm'/ .; ;;"-p'" issequence nesative ,peedof " i-rdtllrionn'oloris 1500 rai oac rbt ctrr {fl acb rdr \ll oflhe dl-o\e! J8. lhe 5]nchronoL' RPM andslip is 0.04 Whatis rotof speed? !+. rr," po,"". laken bv a 3-O load is given bv the i240RPM d) c) l4',l0RPM{ 1800RPM b) a)l500RPM expression:li what $ill be ouiput cunent of a 100:5 cuffent (a) 3VLlrcoso &) !3vrlcosu l line current? amp in 50 used when iransformer (dl!3\'ilLsino ( c )S V r l ' s r n o ^ r - r . : . 5 \ n p t b )5 A n ' p r c ' 1 o A m o { d \ 2 0 A m p oi inducee m crn be foundb)55 I hedrreclion 40. l-lo$ canedd) r:urrentlossbe minimizedl (b) Fleming'sRighthandrule (a) Lenz'slani corc lb) B) usingsolrdco-e (at B) Jringcopper (d) Ohm's law (b) Kirchoffslaw \one ofrbo\e \c) B\ l.m rarin!'lr
(a) 0.85kgging (c) 0.95Lagging

O) 0.95Lagsrns''r

6{CEifd

c€ nr{6$6 fltg/v

b@

56. When a 400 Hz trunsformefis opetaledat 50tlz its KVA ratingis(a) Reducedto.onelength (b) increased by 8 times (c) Unaffecled! (d) Increased by 64 times. 57. Wbichresistorwill.bephysicallylafgerin srze-

(a)l0o,i0W1

(b)t00o,t0w

(c) lKO, lW

(d) lMo,lw.

(T) ooiq3

a r.eiTl({rld iqoIr

".r
r({d rs $r-qq+lftq(fr.ft &-4i'GTrf{)'

'lwr: ,/

!oo,

! {E {qJF atFT )co.! | :R!lT EFr q,il r b\b{ri ,t.ir,o ire? (c) t8 ('r)e\ ({) )\ | r"F)rs{ rffi€fn(trfiTs? -rt, J), !r, I tb. Ca (q) lor ('t)1a (!) cb 1+)>o:l

o r ,4iF lFF qrEil"I' 1i'6r€6 ra%.ft q{ | Affir q{TIr qs? ({) ro?firt ({) i{atrTi (rt) \eo h (s) rso blTh/ 8 | da TIlb qi A.r ara{e <6dd i9 qR vrRfrn Tfi stms a{trri
(s) orr€ |

.4lFF?

=

{ll€Fl y qn {F isqt y z .34 (F) r0! (q): (4) (!) t(l 1J 9|

)-t

1= 3 aor -r. a] =q"7 x r' (a) 7 (1) 9 (.r) I l! (s) 13 6-1t

b r''ae$ERrw qfri 'tRrl.tq fffi< e Eootv fiie ffqqFd .llnF

TFE.?

(T) bi'ffiFR (q) )r ?ffifii (.r) )rififi< F) e ifihri ,o1 ZAa ZB *:"R 'F,Fr 6+ft| 4= 5 GA {.6r

z8 =T6? ({) sc"! (q) ec' ({) ra' $) bo" )r crriTlFrrE:r{€{ ,ltarnR.E61t!6? ' (F) )bta

(l) )bb/v

('t) )btr

(r) >bbol

!r '$fi-iERt({4T{TffCfitFGitacn Rqftrfr? (T)$i (3.)src ("r)edfffi F) fft8ais,i te LRrtnS{ccR'!tcF{n:{ff.ri frcf{? ({) ftff{ qFi"{fift, Ens (q)SFtrcrfia{r{lT, $s\Tti (0.rlsrF{t{, t{iR'r (s)$!ffi qiDk,An{ )8 I ,4Tw]1qft&liqfu rtRr6lcilGq{nsh ctT(e{- .{? (?)ftfrqii (1)ri'Fr ('t)5t6{ (r) Fsrebi )c | 1ff'{lqm- ftc (T ,lRfu? (F)efr ,ndl ({) rE]qlraN ('l) {rqEq 4rTflr $r (!) 116-{fiff r ).! I ftqiv {qzr@"tstrliF{"c{lT&r.tqqftsr (s) 'ltrEr (rr)riFturia.l (il) \sqis F) ifiA r

!1t )b5b qd{ a{lT filifiaT !r{q€aTq{ cq.l5}Ilrfr{ iftrF i'fi {g?

(T)d$fibfrff

(q)4lt@Anl(.r)&r\i

:r r €1qFq6 ,9$I1q\{{F{ ,cFt{ cEl cfiFt

(s) ffim

(s)rritel L

(.{){q.{fi{hr ("r)@(R)ftffi{l

rb I G'6'6-dffEb cqcsq\' qtrElFlqFtd .{*tsT qrs a.d?- ({) )b.ra (q) sbc! (rt) rbcc (s) )bcr l ro cEolfr+erF* EttrrfiT6 Il a cFA6 E{f (g )btb

cITe ! qd'i, sR3t8-o{-toorR( r{1q3{m${-\o.s ct$r.l fr{{-qo

(,i) oa
( 6 ) ) r r r i , ) o r ( 1 ) ) r v \ E )) s o . vta:b=4t7q?i(b:c-i:6{tr{ aib:c=sv? (F)4:7:6({) 20:35:24 (4)20r35:42i(9 24:35:30 3 4 -

5 \ . f h e p f l m a r yp a n \ o l . 1 - 0I n d L , c l : olrT o r o fa r e -

(a) ltotor & stator{ (b) Stator& field ab) Slipringandbrushes (d) RotorandAmaturc. 59. The frequencyof voltagegenemtedby ab Aitemalof having4-poleandrotarjngar 1800Rprnis(a) 60 Hz\r (b) 7200H2 (c) t20Hz (d) 450H2. 60 Thestartingwindingof 1-dmororis placedh the(a) Roror (b) Stalor (c) Armature! (d) Field. 6l. Onelr'atthouris equaltoa) 360Joule b) 3000Joulcc) 300Joule d) 3600Joule.! 62. Ihe main purposeofperforming open circLrjttest in a rrnsforme. is t o measuree its(a) CopperIoss (b) Coreloss{ (c) Total Loss (d) Insulationresistance. 63. A hnsformer hasnegativevolragercgulaiionwhenits loadporverfactoris, . , , / e r o { b )U n r n r.)leaoing. ,J}LaEging. 6,l.Thecapacitance ofa capaciioris't influenteoDy, (a) PlateThiclness (b) PIatearea (c) Platesepararion (d) Natureof thedeclaration 65. Unit ofnagnetic flux is(a) Anpere-lum (b) Waber (c) Couklmb (d) Farad. 66. Pcmanentmagnetis rnormallymrde oll(a) Aluminiu'n (b) WroughtIron (c) CastIron (d) Alnico alloys. 67.Which of the follolring materials has a negarive remparature co-elfieientof rcsistance, (lr)Ampercirour (b) Coulomb (c)JoLrle (d) Newton. 69.lia 220Vhcatefis userolr I l0V supplywha youldbe the heatp.oduced(a) Onehalf (b) Twice (c) One,fourrh (d) Fourtines. 70. Whichoneis usedlbr constartstreelIighrload(a) (lLrrren! x-t-ormer (b) Potenlialtransforner (r) Powerx-fonner (d) Conslanrcurrefi x-tbrrner.!'

(t) \a 3R

({) lbbo

(.1) )bb!!

F) )bbt I

{) | 1&{.q Qi qq{" ciqrqto d? t&?i1ql 6s? (ir) ri!fi nftfi stlisr (3) rcltfi G'hl ('l)rcts]4qlil (E)sriFElffiar tt | 4s11i&{R elit'ft(F) rR.It qilisft ($) qPffi{ .nFatBql dsqiiFr! (,t)rlTt RlFqnfl (r) tEffel€fr (fi.{ffft.is I r9 l-{(q[6ifii

(sq c!i${F1tF{ {T-

(9 tsr{Rqi:dnn ('t)i<{q fi+"Frtft

(q) III:t fi€ri{?

(F)'Ettuh€rr

t8 rilrEnorct eFlT+3lq'El (F) cf$t (q) {fi{E (,t) Iclrfr ta | 3\qlilzl 6{Fl(qfFdw'n, -Gt?

F{n{nlir

(r) Ilfi ollsni c€ .{|d(q6 qrts/u5o

.