I s/ty(.:/s -lt4fii

I}AI}I{IT .- Ilil,li(:'l'l{lctA N

('nIB()ltY)I;nffIlts"rnR-lv

'l'lMI,l: 3 IIrs.

Notc: Attcrnpt all qucstionsAII qucstions carly cqutl m:rrks.

MAITKS: l5t)

'l'lris pflpcr carrics negutivc marking.LS'Yv mtrlcs u,ill bc dcduct'ctl fbr each $'r()nganfilvcr.

C-hrtosc tlrc corror:t irllsrvcr':1

A

B

C

D

i

A

B

C

D

Marks :3

Which element is used as a semi conductor?

Copper

Silver

Silicon

Aluminium

Marks ;3

The number of valance electrons of the

germanium element is.....5

4

3

2

Marks:3Name the element used as impurity to

produce'N'- type semi conductor?

Gallium

Boron

Aluminium

Arsenic ' *,;* ,l

The barrier potential voltage of silicon

element is.....0.7 volt

0.6 volt

0.5 volt

0.3'volt

Marlts :3ln diode, the current, which can allow to flowthrough it without getting damaged is called4s....maximum reverse currentmaximum average forward currentrnaximum forward surge currentmaximum load current

Marks :3ln diode terminology PIV stands for,.. .,. . ..

Peak lnstantaneous VoltagePolarity ldentification Va Iue

Peak lnverse VoltagePeak lriverse Value

Fzotll.

I

t-ooF

I1l)FoNozF06IIJool.!-

@{1'a'nry

A

B

cD

4

AB

cD

5

A

B

cD

A

B

D

.-'..'-,..]1 Marks ;S

E-F +tagr 3ftr{rd t ffiq-frr srqtrr ('qi;rtlqrrr* t rq Jt dm tr

ABCD

2

dIqI.qr{rtfttuT}

Marks:3afrfr?rlT 3firqq t dzir;n+-tn (,ldg)g*-njat +.r ;iE-{ ........ t I

Marks:35{1 3mq?r 5'1 ilr#t EfrKt dr 'tt;f rsqq tJrrl-indrfi *, Batur Fg tm 3rgrar t srr #srqtrr il-f,r t I

dft{ffdtn3rc"qffifrqrT

frffifi{ 3ErqE {lI 3rdtfrfr t$TrB'r dfiffirGffiR *tfqT{rfr #o1 t ....,....,..,........-... I

0.7 ETFE

0.6 qtmc

o.s qI€o 3 ElFe ,,ruita.J-

srqts fr, 16 stc iil kdTr eTfr 5 3P-t fr$ s-dr6 +t prr lltrar t a-o

E.6665 s 1

:rfr'*ffiT H$q tTKr frq$ firc)$frfi-crff 3ilffifr 3{?renrr P#fS mislnfr+aq 3ffi lrdffi lrrr Gr{'q,Tr)rRa-.rrr FfrE sta

srq-r" ercefad?r d'fi.*G.fi qr U'#:H'*rt,.,..,.,,,,.,.-..,.,,..... I

tflw g*mt,rtffiltu qtrh'

A5B4c3D2

ABcD4

AB

G

D

t

AB

cD

B df$f{e m tEn[c $$ ffi Etdvp .llq'gq"rt qq

- Question Paper - Page 1l I

7' E*alk:3,Which tgp-e ef diede is used in Radis,

receivere? _

& $ignd;diil*r*B $witching diode$-

9, Foint contact diedesB l*ligh p,or*+sr di.ades '

': i, l.t*X; i-r ffiv,*.s, :"S:

&.mr, the PRO ELECTRQN.Iy&q eedin&,

one diede is ep:eeifie.d as'8Y127'. ln this,

B*h*t:de"es the te$er'Y' indieate?Fewer diodeFt*cttffer diodeSignaldiode*fun€**ffi die&

A.

Ea$:

{ x*'",q-.*...,

tfg.-a* f{Srw *. fu,€ s.ffirs &s*gr Afm H*Rraa erqlstr*fr"r s*e@ah#€s*ssx*,_ffi*@+

SE**IE*:3

*.tdg *r

'*:#d;r Bffi#-di*r - -ffirnter&'Byt27' & r*r * EfrftE t i g.evt

3rs{ 'Y'l ;H[ a**ar'trPry1v.ffi)*tre-+r€F lffirwraq srslsBtrd str*sd+rra EI-&

e I

*S,

€

"S,.,

&

AB

ats

$ ilhr*+ :3,

lf the input AC voltage is 3fl vqlt$, nern th*output D.e uettqge o$th* halfrsave reetifier'

witl be.

A, &S'S'uelt,

E 2?:B'uett

e' fi-.S vott

B 1Q.8 volt

ts Harks :3tf:thcreeieter,ef.t0,ehm ls eonnffitsd as toadresistor (Rj in tt€ full wave rectifier at the.

*t*tFt*j &.C uolhg+ e#,?,1l8 ue*, fxrd ti-|e tedcurrent (lo"l ?

A lon * 21.6 a6pB las = 10,8 am&,

C lae * 2.16 anTp

B le= 1.08 amp

i{. ' - l*arks:3

if,tlte input Ae frequeney is 50 l-,lz then tfre

output ripple frequency of the bridge rectifier

is..,......A 50He

E 100 Hz

e 1s0 !-rz

D 200 Hz

t$arlts :3Which type of filter can be used together with

a fullwarre rectifier only?

Series tnductor fitter

Pi fitter (r)RC filter

Choke input l-C filter

12

A

B

L,

D

*B

c_s,.

@

&*tq,a:3q& Bffi's a;$t *."irdr (s;qe r$T{r ffi,*}30 d?s t, ;ir int e['rT qffqNr4r Gl-r fqM,q{q$ #f ffifr #.*fr ahmr,...:,......,....$-s l

S0.o dct27.6 $ea13.5 *c?10,eittffi

rs66 ro # *r ffit*m.*H" t'

sffi,-+er€ F*, t sr{ * 21,^6 dF? e fr-driT

dffi 6l"dry-sr qf, ErE. X{r rsrxr e&-rftrlEn t$-sAs t---+eTrh--'Lrq'$ dt Etsr srflr t, d FiTE sf"(tan) ffi'Erf G{rNItI

l,u = 2'l,S (rqTTS

lo, = 10.S (nQqtff

lu"* 2.tS e'Eurff

Marts :SqH frRE (r.S 3ilqfr Gfi'"Erc r,.* ffi,*l50 Hz F d Es i+*rrrqr 6r ffia iffislffi (3{rrcgr ftq-r ffi;HI50 Hz

10O Hz

150 Ha

200 Hz

12. fi*arfrs :$fhH qE;rr e ,fhF*r^ _sr $qtar a$Ea yI1Utar hercn{f trf.,r ;}*r ttrdlq;rvq *; }rvf&qr ;rr sqai tt

A $r{16 $B-*;dt furc<E qrr{ l-ftffiil (n}

c a{ff.{rft fkmD qtq'.tmtr* qH.I{t fu?qr

A

B

14

D

tl

AB

o

- Question Faper - Fage tl S

1i

I 5,illl{','li -'{r4is:

What is the fotward voltage drcp of single

green colour LED is.

1.8 volt2.0 volt

2.2 vo{t

?.1 Y?ll- -"*nni*ri ;e

'dt'hictr one is the application of high po\^rer

transistor?tuli+rephcne

Loud speaker

Tape remrderTransducers

A. transistor is designated

V1/trat does 2N' indicate?

lndicates as Ciocie

E*sr[<s :3

as'2N 3055'.

.lndicates the number of terminals

lndicates the field efiect transistor

I nd ieates the"two iunction cjevice {transistor)

ln comrnon emitter amplifier the output

c,haracteristic curve can be obtained by

!6 oc the 'Y' axiu Vs Vc.s on the 'X' axis

!s orr $tre 'Y' axis-Vs Vss on the 'K axis

Vsr 0n the Y'axis Vs 16 on the 'Y' axis

Vg6 ofi the'Y' axie Vs lq on the 'Y' axis

ll*Iarks :3

14

ABcD

ABf.

01S

ABC

Dt6

ABCnTJ

17

AB

tr

D

TB

Which typ'* of transistor biaslng in comrnonly

used in cligital circuits?

$elf bias

Base bias

Voltage divider bies

Emitter bias

i o'*i .:!.:-1

r3qffi * rrT St q'm"*.* 6r

$q tl1.8 d-cE2.c *€a2.2 *d.e2 1 AfsE

'Bilarks :3q#ry* ai-drfrr

AE

C

D

14

A&\J

p

ftFiT * S"ata wr(q sqq?*?T B?

. \:ii::a:{:

ffiIrstq'fr.*Tfr

ttlark-s ;3

mE .fi-fi gffisrq er

fl"W{rfi-{* ..,:: -lr-.-...

rs IHarks :3

{r*- aiffi*ry{ '2N 3055' * * * mTffiT{ H I

'2i'l' EEtr qqffisrds dt atfi-*r FA

BC

D

?ffi*YTiw1 stffiffiS€'-"8 $h+" Eiffi€T dr qqfr-er B

dt :d?rft'?iT qif q?fl-f,r tl$arke :$

q.ffi'€r$r qffi?-t tr*'qnrim *' :mryc*heftffim q'dr ....r.,.,...!d...e *"liEffi *frr,$ srfi sr ur TIffe 6 I

'X' 3r&T tr{ Vce e qaen S'Y' 3Tffi tl'{ lc'X' 3{Er W VaE Sf ga-cr * 'Y' :{Qi" 8't la

{6

AsC

D

'Y' 3Tm tr{ le ffi E€Ftl S 'Y' 3T&T q'q Y**

Y' 3r"&1"fi lc ffi HW-$*Y'sr_TJ*:17 Marks ;3

ABCD

iifr-q'qftqq GB'ffi TrBe) fr artffiqn:ffi e?FE * EiBt{T ar$fur Hr rqtc'ffiqr Hrf,I E?ffi-3{fiHffi3{Trrr{'3{ffiaftq'tdear ft'I{rdltrI *tffistr*n&{ffi

x(Jd&

IhL.o,q,

'CF-IIrn

FIs0zl-6tiJo6F*@ffi'-p

AEcD

Marks :3The po"rer gain {Ap) of arnplifier is oftenexprcosed in ... ... ... .

milliwatts

wattsdrcibelpercentage

Marks :3

The emitter follower configuration_ isfrequently used as.".an amplifier circuitsswitching circuitsnegativb feed back circuit

an impedance matching circuit

19

ABf.,

B

,lt

18 ttJlatts :3t-"Fq-&sr'q{ ar fraqil rr$a um:.".....'...........-........ fr Ealfrr Hrf,r tffi'drrarg*mrdfrEfrrr;rar

llfiarkc ;3

:rcilEtq, SlE.rrrSI fuqlTs (tTfi{ffi $fdarsibsrqhfdl ...,....... & d'{ qq qTi{Ksr -irnr rrh t'fifu{R'qftrrwtiffitutsTrcfi"ffi Srg-d.q, qfrEti"uffiqrtlr SffiI qf,{ffir

*- d&tio-n Pa-.* - ---Page il s

ABcD1g

srftLI

Cfi

I Sllt/{:i$ ,lljlll,: *\l:r i\l

20 Marks :3One of the application of class - A amplifierts

AB

C

D

audio power amplifier circuitmicro phone

tape recorder

radio receiver

A

B

cD

Marks:3.&oft-a trq-&qrsn"t

3rgsmrfS*rrdrtJiYBd qfrfi twaftwrq{ qftqer

nrffi s1a

tq ftBid{tB?il ffifrdr

21 Marks :3

AB

cD

One of the disadvantages of the class - B

the single ended input and outputthe positive half cycte only get amplifiedhaving a cross - over distortionhaving centre tapped drive transformer

ffi-sfir 66{1 fr it (rfi t

Marks:3ger 5f, t'#qfirnrir{

BcD

ftfrrs q?i ffia G,"rge $k ar:qp 6r (rfi-

fr R{T Ef-drftT6T triTr.Trfi' srrf-rrm'qffi* dlnr H(rn firg_3frfl ffi ilfr tt-e-{ trr FrF ETi.qi}i{ Etar t

AB

cD

Marks :3lf the output of the oscillator is non-sinusoidalwave form then, the type of oscillator isknown as....

relaxation osci llators

harmonic oscillators

colpitt's oscillators

hartley oscillator

Marks :3Wrich type of oscillator is used in broad casttransmitters?

Hartley oscillatorCrystal oscillatorR-C phase shift osciilatorColpiffs oscillator

23

Ats

C

D

22 Marks :3qE ('s drfrT (3fifrfrE0 +.r ful-a:kwr+#rq (drd urr+erffi) at?I fi.or f t* g1r gl?rm * dft-{ dI .................,.r...r.. sq fr,Enrn drf,r t I

frffiirrifikdrt6rriff#F 3#ft-frc{sTdfrE 3fifrtrr6r{* 3fiffifrn

ABcD

AB

G

D

Marks :3r€Rur ffifrft$q?Fr{+,3fiRftr6r ndsr frdr B?

6re* #fes{f#ffi 3ffrda{Jrr-fi ta erqr Jilfrde{6fnfu 3fifrtrr

AB

cD

Marks :3The.free running multi - vibrator is alsoknown as...

bistable mulU vibratormono - stable rnulti vibratorastable multi-vibratorrnono -shot

24 Illlad<s :3o"cir16*T##mm,A Bftr*,(arrr5L+6165-eiftaB smfrrfr-c. (qlat-T&A q-({ifiTs Fdqft'fr (s{rt{-d{) Eg-dft={D rTI* effir

AB

L,

Marks :3The noise in operational amplifiers can bereduced by....applying dual DC power supplyapplying single D.C power supplyincreasing the value of input resistor to largevalues

shortening the interconnecting wire lengths

25 Marks :3*tB.qrrrfi Tmtla' llfttlrra trrArmqfl*' rafr Hfir 6-$r *r qr qq-e t IA ffiffiBTd rrr1ffiaTrIffirt*-anr

B wtr trS Bga *1ffi st;FI m,ri t.nuc frf{s smftr*. ({a:F tFrE{) ;nr }ffir

ffir rrrdt il6'16r& *.arnD 3irrfiTfif rn$ frr ffi qt qErn.{

- Question Paper - Page 4/ 8

AB

C

D

I5i II/(:/!i - 4!4!lo"

Marks :3The gain of an op - amp. is specified at

different frequencies is termed as....frequency gaingain - band width - product

band width gain

op - arnp. Voltage gain

Marks :3

The application of UJT is

filter circuits

power amplifler

relaxation oscillator

sinusoidal oscillator

The hrateriat is used in solar.-,t ,ffii,rloutput terminal is... .

nickel plated ring

chromium plated ring

silver coated ring

zinc plated ring

Marks :3What are the terminal markings in TRIAC?

Source (S), Gate (G), Drain (D)

Main terminal - 1 (MTl), Main terminal - 2(MTz) Gate (G)

Base (B), Collector (C), Emitter (E)

Anode (1), Anode (2)

Marks :3FET (Field Etrect Translstor) is also knonrn

4s...

bLpolar transistor

unipolar transistor

current controlled devicepower controlled device

Marks :3GTO stands for...Gated Tuned - otf ThyristorGate Turn - off ThyristorGain Triggered - off transistorGate Triggering - off Thyristor

32 Marks :3One of the application of GTO ishigh power amplifiersignal diodesinduction heatingaseillators

AB

C

D

28

AB

cD

29

AB

cD

30

AB

cD

3l

AB

cD

AB

C

D

i' "rs .}

26

frR[--.r 3Tqfrr* q"{'frfrfrs ('fr#r Efr' st ........... t cq dtl}IT1fr EEfrdT-dsf{sq-qt"E€d's frEQT t'la

3tus-W.4q*rER"-

q.*.* a.r (rfi rys"fFrfrp-rr sftffiqt?rr fuqesrq{?rffiq'r 3#*-*-c{sr{I;rsTrsa 3{rfrilf,{

Marks :3

..... t I

Marks :3

Tilifi *fr d', tl"rrilrfi ffi ?ffi{-dr t r11q

frtr{ -&fu ftrrstfrqq t;&frB ft?rqifi t fr1frg it?r

Bn 'efe ?r'rr

Marks :3trrrtrrffi * Effia-dr rTrffiTr Hr puIS 1s1, ,ta (c), 3a (D)

trdr EffErf, -1 (MTr), da ?ffTfr - 2(MTd, Eld (G)

c ilr (B), 6fre{'(C}, (rffifi (E)

D Hfs (1), tdls (2)

30 Madc:3q$f& $rdg $ts€ ffi -.,x...x.8,,x..,r..-.

fi dtT q{ sff Enfrr qrdr H I

A ffirr-dtrt gitrtq.{B qrq-dff{ EBsrc 6te fr{fia srerp_ ftq'd tuif{il-.qFd _** -. *3,1 fotarks :3

ffi.*.sfr a,r Bmrr tA t'tftH ryr-B{is'eTlqkrdrB fu r*-i#E qrqftw*C #a'f**,*sf.n de5g.{

Marks :33**-&..fr.

arff ilrdr

AB

C

D

27

AB

cD

ABcD

AB

D nT flfrif{rr-3$qr {ffia-sqae $Sark* ;S

krrtlET *;.q?*wteq

;fi*;* sr Ts$ 3{affir;*xr'

A srmr we{ qri-}qr ?6rtffi Y-rtrffi HIq)-E

* Ss{rn${"&frrrm *)$iir t*{-Yq{ffier}

' - Que*tion Pcper - Page S/ S

33

IGST stancis for'...

lntegrated Gate Bipolar J'ransistsr,

lntrinsic Gallium Bipolar Thyr"istor

I nsulated Gate Bipoiar Trarrsistor

lntegratecl Gain Bipolar T'hyristor

34 Marke :3

One of the application of IGBT is. . ,.

A inverters

B rnuitivibrato'm

C a*tplifiers

tr loud speaker

Marks :3

AE

C

il

," r'r \\ .)$ !

A

B

C

D

I+

33

itT*.:Sffie ar,r ftwr* t

sr. rt--S-#-e 6r s6' ryrifrrrA VrqSqB eq- {S5s fiFfr Er6ffi)e qa*6 ttpwfiqrtm;D HB3 +q"{r{

y&"a)-fts :ts ffi,q-*at' Eff}e{rS&ft6 *frzrdr Errt-q}dr errqft€c.{

$13fts elE Erry-qlm F .ftt?.{

$e"eltts ala Em-*-m qrqfrrtr$flarks ,Ft

tt

35 .; ffiarks :3The current through the ioaC in $$R, wnich

is below the critieai vaiile is calieei &$ ," . .. . .."

gate current

foru+arded current

hotding currcnt

load crurrent

ABC

D

35 fffarks ;3

Htffiwtrrt H I

A'8

r.,

D

q-{r.S.slr S'6fs *' ffi{T qiqr,

qTa * *t H a6 "-....

crE strq#tqtrs ffit-iafftdai 6taEIE stE

36 Marks :3

AB

L,

m

The rnain *pplicafiun of SCR is

the speed eorrtroi of motors

the vultage amplifrer circuits

the filter circults

the osoill*ior eircuitsGqo,

In I.-'!OSFET, the insulating

made of... ..

galiium rjioxide

silicun dioxide

germanium plate

biemutE: plate

Marks :5layer is generally

AB

s3S Marks :3

$eR stands for

A Semi Conduetor Rectifier

B Speed Contrclied Rectifier

G Special eonduetcr Reetifier

il Siliesn Controlled Rectifier

36

A qtdqt 6r rrffi B{jqorB qlrear Erar*ry €e?c &=dffi TrftsD dff*.g t:ii$r&'rr1 er&z37

Mar{<s :3

tt(r{r.sJ{K sr T@l,' }ry*r

[Blarlqs :3q]ilfi$H!"q** *, ttft vl?T (ftSfrn ffi$rsrrdrf,-: ............"".- Sf q#ff $ffi ts t

A Afrqffi sr{rififfirfsB RftE;* ffiffifrffil-$sc ;r#ftqa ffiD apqgq cff5

(rfr-SlTlT df Ure* M q{'TSr...........!........... Haqrfir t I

*Tft ?i, rdr ffirrxr{aFs 4ffsg t**Tnrq'{+$qrfr *sqt'{ ffiqTq'{ffiftqry d'ftr t4frqil{rr

38

ABi,

D

Marks :3

3g Marks :3The speed of the A.C motors using SCR can

be controlled by varying

the hoiding current of SCR

the firing angle of the SCR

the load current

the gate current

"&

B

G

E

3g Marks :3vqrcfnrru sr ffiil mrfr $(r efrr rf6$ Sr?ift, qM ... 6I{T ftifdd #r arS#EBI(ry.ffiJ{K ffir frffi-rr ffteqq.$r.nn sl s.l-qf{rr qtur

frt-s 6-.is

Ae q,f,E

AB

trn

- Quesilon Paper - Page 61 8

4S sdrt; '3tn tC type, voltage regulator, it is designated

as'7805'.What does ttle numbrv'78' indieate?

The positlve output re'iulatorThe n*gative output regulator

The input po*itive voltage

The output negative voltage

lltlarks :3

ln a on - [Ere UFS systern, The switch olrer

tirne from rnalns to battery is....t0 mifti secI miilisecI milli seczero

[ll*r*s :3ln Binary nurnber,'0'l'0S' is equal to thecieclmal number is.. . ..

1

22

4

Mar"ks :3The decinral numbernSr is equal to the hinarynumber is. .. ...

1 000

1 001

0111

01 10

# Marks:3ln i{exadecirrai nurnber system the basenumber is..,......

,A6812c16D 18

Marks :3ln Hexadeeimal number system the letter'D'indi+ates the Ceeimal number is... . ". .. .

D=14

D=l3D=l 2D=l 1

ABct)41

ABCD

ABCD

ABC

D

ABG

D

{,xx i

40. *J[*r"ks :3

3rr*.* fr€rT fr, ffi qtf,{, 3*'?&05'&'w+ fr'. Hffitr f6-qr rr+rr t l +i.@r '7rE

+e"r atfs.E?A gIFI[rffiF.fr*,E ffiiT6B ffiITanffiffi-dfuiffis ffits'E ffinFr{ffi dlpa#rS ffida Eu{rirqffi E}6.'ea7

4t [Cfarlts:3qs'*#-a-errg* q$rs sslrdr *; *t * tESaE ffir 3i"dffi" TFIIr B ****-,*.p,f.N..!+, t

A 1oB#'*,ft=B efrS *Ffrgc s Bfr *fihsD $fit

Ergtr$ +!wr '0100"

dimrt.u.rrafil1

2

3

4

&,r&c:3.....r...q.,,.!.. -. aqffiIffitr

EelErrfrr Tiwl g"*um-aft1r000,l001

0i 11

01 10

S,l[*ds:t.......,r.,.,.r,!.. ffi$Tfr *€qr

tqrrB$q?{ :dwr fr6

t4

18

't8

$ilarks:3

3rtfi"{ eimr t.*.....*.."..

ftlarke:3ffi=*,ts-* qi-gqr rs, "& * STqf{

,D,

..,.,.r..i!.....3........" z?ffrff:i[ li€{r ffi qEffiTr tD=14D=1 3D=1 2D=j 1

ABctr4t

ABLt

D

M

AB

sB

45

ABcs

46 Marke :3The pre-dominant binary coded decimalcode is .,..12482481

42ffi8421

ABcD

iltarke :3

stGE (rrsrilir ats H"..

AB

cn

sw ErFfrtt

1248

2481

4286

8421

- Question Paper - Page 7/ B

r 5l$/( Y$ * 414ll;,

47

AB

cD

Marks :3':j

lf the inputs of the 'OR' gate are 'A&B', then

the output (y)=.

Y=A.BY=A.BY=A+B

Y= AB

Marks :3

lf the inputs of the 'NAND' gate are 'A&B',

then the outPut (Y)=.

Y=AB

Y= AB

Y=A+By= ]ffi

A

B

cD

47 Marks :3

fr-c t frBs 'A e?f B' H at frr"rdqfr'oR'(y) =

AB

cD

Y = A.B

Y=A-BY=A+B

Y= AH

Marks :3

ffi 'NRND' te *'frf{s 'A $d' B' t dfrrtf, (y) =.

Y=ABy=ffiy=fi+By- A+B

48t

ABcD

AE

G

D

Marks :3

ln J&K ftip-flops the 16th clock putse {ivesLl-...

1111

0000

1001

1010

ABcD

Marks :3

J&K Errq-qffi'fr' tedt E#+^ trfrI q{Tl-fr

to=.1111

0000

1001

1010

AB

cD

Marks :3

What are the two inputs (A&B) of the'NOR'gate, if fie Output (y)=1?

A=0; B=0

A=0; B=1

A=1; B=0

A=1; B=1

S0 lrrllarks:3

'NOR' ifc +'A ABs (A (,ri B) Hr S,

qfi ffi44 (y) = ttA=0; B=0

A=0; B=1

A=1; B=0

A=1; B=1

ABcD

- Question Paper - Page 8/ I