Se LY- shen converiney, 7008 NA to microampar
@ 0-00F mA Qu Pets sthe yesult is
4 OA Die
122-The ued aay \ghio occ ae 2 Aalalenels Bess
eg O©33w/ ©33,000 0033
Fooo xe
Nee
thumed for reasutine\
194-An chmmder io an in
resistence” Quwatlreg
@ covert Dvehoy
124 An open civeut is one thet has a complele a pa -
@ Tue © false
125-An elechic healer chews 35A froma Oy sence The yesiwfance =
the heating elewen! is ogpecimtlely
@ 3356S. © 38-62 ©3212
are. eKits pPosins, the.
Oaieoue
tlt a DI ane « 6v batho dela) vont
—@® 30v @ av ©18v ~ ® ov
124- Novtons quiver ciycuit ) Som opencivcutt current behwen two
poinks ine cvcuit 2
@ Twe @ felsew
123- the ajc pesitien et « phaser vepieserils the ews ot the
sive wave with respect 4 vefevenice-
Diu Ofse
129- A ovo mf copacier exjals hrewd new
@i0opp @tooo Pf ©10,000 pf’ 400,099 Pf
picofertael 2 S30 Ingluctaace is the property a cn incluctoy thal piocluces N
an” opposition te any change in cane -
@ wer Ose
131-An Ac. cncuit consists of @ vesistor anol capacitor. To incase
‘The phase ane above 45", the followin, conelifion must exist =x
@R=%o DR SRK @R=S%Ke
132- An imerginas wunber is one that exists enh in dhe incl of the
nethemedfician
@ We ® fse
133-In a certain seties ysonatt circu, Ve-L25v \=125v Vas 4ov
the value of the Source Velhaye is
® 125v Owv C290v Odor
131- the Cherac teristics Ef = nen-lineny Yesistance 1s icky’ Hi
becomes foo times, VY becomes
Q@abad Loo times @abeut lo times
© abet 3 times/ QD abort fuice
she.) Joba, . :
135-The ellypamic feeclisingy ccuit consigh of « series Combinetion f
Capactley C cel yesistey Re xC¥oss exch thyristor this yesistence Re
(cleng with paralle] comecteal lock )
@ ety cheveyiney eat ie Glinas ohschesgine cunvedl
@QDiimids bath charging canol ®) hone of the above,
_ Sscherging content:
13-6 for « BYT a= 0:98 then B= ;
Poot @-s ©49 O19 Ov C1zsov WD yor
E The chetwctevistics Sheree ine Yesistmce is tek". If i
becomes tog times , V becomes,
| @-~bet 100 times Babeut 19 times
@ abut 3 times / D abot duice
en) Joba, z
235-4he olynamic feqaatisirey crew} consis} ef « Sefies Combinetion ee
Copacitey C omel vesistey Re sC¥oss each Ahgsistor Nhs yesisence Re
Cabay with pase] connectesf ohocle ) —
@ limits” chareina, curved? — © limits ohscheigiie curve)
@Diimis path chasing ato @) Hone ot the ove.
clischending Cunterst
136 fos « BYV a-298 then B=
@oog Bes 649 o 49
ae se nt?
pe A
rs expe .eties COU RE AE ES ase a1 ral ahic\ ce
7 ee Releling, curse
@ toa Gi Glu Gite
BOK Ne heloking cwrert is much less then 1% of vee! curroit
133-A Single phise semicenverter is fecchney shefly inductive loud- the circuit
has a ras oliacde actoss fhe Jone! «nel Fives) swe 1S. Duerinay
Seems) eats ny fe
SE Tope tyes the HE acon colton $ fed
Ma @2a @ya Oem
Oe Frecstheeinay check eagged Conckicts fe of in och helf cyek
a A one pase hall uve convertor is USeoM te Change abelery 4 Bov:
the Aioby is continuously 4 ir Pe
4 ved by of sianal- input VoHtaje ig VEVw Si
the Fyrstor will comet S J P x
@ fem o to 120° @® when v>50V~
© from ote 90 @ when V <50¥
ce dhyrstor con conclict only when it is fom
whet V>5ov
140- An scR has ee ee cene aye
duration” of about
@Lys @xs~ Cus Mss
e0d2y Dutton of fle pulse shoulel be shgilly woe then tun time of sch
J4{— Assertion A)g ulnen aan SCR is conducting » the Velbag clrop =ceSS
A a
is about Jy.
Recon (Ai gither en Sch i concoct ire,» Ihe oto ea “i
Qooe feck is ni
QUA A aectR we cect nl 8 @ ee
is coweet exphanettion of
O©A Is conyect but Rew is wre OA is wrens at R is covert
ol binsecl This occurs only
pulse Shoulel have & ‘hy is confinucus}y diye by of signee inpat Ve Hee a Veviasinett
fox vill conchued
ato {30° @ when v>50V-~
2 fem ote 90 @ uber VC 504
cam Ahgrstor con conclict only when it
when V>5ov
14o- An scR has aut on 1ime of 4S te oye pulse shoulel have
Aegthar dé cheat
O45 @ys~ Oss Oss
casixy Duiotion of ale pube shoulel be shehtly woe. then dutn time
e clyop xCXeSS
is forwerrol biasecl this occurs only
fsck
JL- Assertion(A)s when an oC is coneluctines the Vol!
is abut Ly.
4 is eNerjuve 1S cel
Reasen (RY gwhen an ScR 1S conoluctivey >the jynction emp sock ; : :
oF 4 eancl A @ Beth A awl R coved bul R is w
Gah A ancl R ane covert Beth f ae a
is cowect explinettion ofA
ee oe
25 & Swection texperetine is abit 120°e Hence Ris Wrensh | 142- A Chopper connst be line Commutacteol N
@ Tue ® false
NB-Tf 4 fuachemt opevetion is Yee(uives! we vieeef
Belial comerter,7 © Full converter
@ sen converter @ rene tthe sbve
1Y3- Lh crpatallel invey}er
each thivistey is, duvneol on” ®eadh dhyvishe is duiheof on once
dwice olvtina, ecech cycle luring, each cycle
© exch Agristey is duvnest on Oeach dhyistor trea} he fitnest on uf
ele once of dwice in exch w times ty each boca f
Joce Cycle a) i
144- Ty ther | chws |
eect ON g tose lurve. om Oe on ie oi
e Vamol I vespect ivel ie 7 a :
is ‘Y ch ols @ | anes Vv vespedtively of he’s laws y
OR mel respect of dhs lay @)L snel R respectively of is loos
195 the asf fancy of» cyplocrvedoy om be chant by chug
he Firing anale
@® Tue @fdlsem
146- the obffevence lehieen vesonant conmitaion ated sell ommdeti
beth these metheck one haseol/ G)in reson) comndlehion » he sé
ommutet merls cart} Lowel cussertt
ox eiely ifaw? privcipes — xtndatis chats od sons the
commer tina lene are one eure lou
ounce
ny
© resonant commutation
are eae Bice
uses Land — () none at dhe above
pies Fier aaa eases meneame
each Ais Mens he fatnecl on up
T dimes th exch |
exch thyrstoy is dunes! on
ether once of fwice in each
leael cucle
141- Tn Heine ches
@ Vanok T resp
©
once cycle
- tempered mel Power loss ee Ses to
: a Ht olmis ®1 wet y vespectively =f aWw’s laws
QR any vespectivdly At dns la OL omel R respectively of chw’s eer
145 -the ofp equency f a cycloconvertey con be chem al by Cheging
Phe fiving —aneile
@ We a @ false
146- the obfference behieen vesenent conmiechion axel self commun
is i
beth dhese meTheck one baseol/ Gin ee au ee
ommuteting elemels cv%4 Lowel cur
on entirely oltforent principles en a ae lemesl me) cet
committing, elemetts ale nal coy Yous
curyent
© tesonaiif ommndetieneUses: eee) ae dh ho
e C but sel? commutation uses a Drone $f dhe above
Capacit ov 19F—AssevtionCA)z A full centyollect bridge converte’ can operate
wt fivst ancl dourdln ris
Reason (R)sA semi convertey is cheapey He Beall nee
Bath Acmod R ove covveat @ Beth A anol R covet but RY
amol is wrvect erplansfion is not correct explandion of A
ae ee
@Ais covecl bit RK is were @A is souierg bat Ris cor
143-the oulpu wave of at cyclo converter Consict of anunbey of
(etd wi
Styreats levee fiom dhe inp weve.
| @D Teer © False
449- A TRIAC cm be furnce! on ae
‘ expplying “nestle.
the wr ie thyoser
NYE) Ss
@ equcdl fo pew value of fone! Curved
Qe! do pak Value of capacitor cuvent
Olea) eke it ere ane cxpaciter cuter
@ none cb the xbove
154 - which chopper Crau't epaates in aucwclraits { comet are
@Da ® ea ©ov @E 152- A sina)
ngfe plese cloconverter with BAe
input trans dormer a | co N
@2 thyristors @y4 dhyyisters / © Edhyristors
@Mewther 2 ov y Shyvistors
163-1 applying, the superposition Hester
VA the sances ere consiclered one a atime wilh all othevs ~replacedh
& vv) ay they qnbernee| impealonce
@aN sH@ sores ove Cons veleveod inslepencerly
© alt sammtes awe consictercok simultaneous)
DO the Sources ave consicleres! one ed time. with
i) Fheiv iaternedl yesistence
all ethers veplaceck
Fine! Zh for the
“a
{53- Referring to the ajven civeu'ty pat the civcuit
thet is exten to Ri- a
@ 129/212 ote
© 13-42 ome =
De ln oveler 4 at Mengimurn power Aronsheor 4 yom @ cap active Soule 5
Ahe \eact must :
Dhave « capacitive wee howe oo ee haf 1S the Comper
equal de civcuit Yesistemee Conjuade o Hhe ewrce impeclance
©be as copacitive as his @ vere 4 dhe ove
( iveluctive
Kf fo « oven
155-1n om electric cavcult , the yeection a nee
pulse inp is Known «S$ the pulse yesponse
hue false p6-A tree - ph se A-comecteo! j
2 ena cenerecfor is olviviney « balan
Jeact such thal eth phase curvest is 12A in masini : :
0.712 130 A, whett awe th pe ee
curvent 2 ; axe the pel expressions 4 {he they phase
Blatt A 5 Iyer B80 A
QD Igy W21 A » ge -12 130. A
© w2l3l A > Tqe 21D [0 A
@ lo l2L00 A > Voce 1D 190A
{57-ln A- connecleal aenerstter » all a the phase Volts Ne
@ we Beyual in weenie
© one Ahivel fetal one-sixth fete
[5 g—Delernininey Ya to high olestce of accuracy a
Curve 1s very axccurede
@DWue @& false ~
153-AG) ts the. simplest ell semicneluctoy olevices -
@Debete A — Otrensiste Soperitioned -mplier @sck
wa characdeni Ate
4b0- Exch obiode im = center teppeel Fellwave. Peat
piaseol omed corolect’s bey. of the input cycle:
@ formed + 30 ® everse 180
@© word > 130% © wes? 350
fe of a Zener Bee ent eats er ae ca
el~ for the volte
dhe cltede Sell Tee
® gyectev then Vz. fag
Be i i ee Dey iw webu
@ene ceicth tel
© ome Ahivel etal
J5B-Delernininey YU to high olestce of accuracy trom acheracdevishe
Curve is very accuvede
Owe & false ~
159-hoy is the simplest of senioocluclor ohvices -
@eleck ® tronistor S©eperettionel amplifier @sck
4o-Eoch olicce im center. teppee! Fill saleoce. we
piaseot ome conobicts tex fh the imput cycle:
QD Jornal» 90. @® wverse 180"
@ bend » 190% ©& Wess 0)
pei ee vallge “0°
he cltocde souk! be
@ gyacter then Vz ae
| Oless then Ve bat oyveater @ Mone of the xbove
| than Zero ao velues lngh Dwone of the stove
eobisg\ ye See
140-An input signal is resold fay an oscillotey te tw
(Augie (eee
1#1-In in Imp¥oVeal shunt veruletor, ulich of he following, ae
see the Yeference Vo Vee
— @D transistor Qt @® Zener oliecde ee
© Frensister Qo @Rs
fee the Hey oer Fhricrh silicon cliock increases 5 the
Voltae acYoss the cltook
@ increases doa ody @clecreases
Maroivnum
@is relatively constant Delecreases and then increases
eae
i whet occurs when a ceneluction—lranol electyon loses energy cunol
nll back inte = hole th the vale bonsl
ve peel geass i
@ epinar, @) ve combinedion/~ ©@ spneredion
172-‘The silicon maferial useel in sewiconolucors i¢ extremely pure with @® feabse Pe
i ; onen\s
{In con improveal shunt veauleor, ukeh ef fhe followin, Cor
sede the veforence Vo age
@ transistor Qt @®zeney ohocle “
© Frnsistor Qe @R:
ea Sate ee tine oA thew ~silicon olrock increases 5 the
Noltase acvoss the clrocle
@ increases doa edy @ clecreages
Macimum
ex xelatvely eae Doekcresses and then increases
ew
dha- lest eccurs: ohente: conoluction-benol eledtyen loses ener omol
Pal eee Ver hin tes mt ble i Heese oan ee
cf) 356
DHelop ina), ® SaCenn ne eta Lo) apneration
143- ‘he silicon material useel in sewiconoluctors 1s extremely pate with
hho odlitives oe INT ONS) ee leleaeare\ wale) lan ore Uae SoS
of frouble , if omy » a trom These voltage measurements ts N
tev
®e is oper
©a short from callector fo emitter
@ i) problems. eee
JF5-A spec! op-amp has low volte : ee
ow Voltane acins low oufpil impeclonce , «
hig ip mpratence - — i.
@® Wee ® false ~
146 frequency moclelation is. achieves by veraying the reg snc
) Felse
{f4- at ne lel Me magnetic cheracferistic
yelation between fielel curvert nel ems
@ Tuer @) False
18-3n characteviske of simplex 4 Lp winaliny the Beck pitch
en front pitch CYp) neserly equd +o pole pitch
Aree ® false
17.9-In Charactenstic of simpler lap inne the b«ck pitch are
Fvent pitch Ene elation by(2)-
¢ @D We @® false
( $39- Tn Chavacleristic f simpler Lap vineling dhe commutator pitch
Va equal $4
(iter GO) ee
Apc she aprevctov 5
ct coastact specel L81-In chemeleristic of simpler lap winsina dhe Resubtnt
pitch is even
@ We ® False
192-In chemelerist< of simpler Lap siveliey nos of sets # a
toe of Commutave owe eejuel fo ne & csile-
@P Tue @ fase
183 —uhich of the Pallowtnn mater is useel where hi ofeertinsy tore:
ancl viele specof Yansie ceil is yequiveel ?
Dall weters ®lrketion wder
© oc wotor ~~
@ syrorrones motor
1py- the avmafare Velbuae contr of DC wile will provie —
DBD constant power olive
S| Consteutt curved chive
eck ond al the meen ot starting «Ne
exmefture cure’ from flown
® constanl velbeae olvive
@Deonshent torque olive ~~
185-As dhere is wo
motel, in ctelev to prevent a yaaa
thyous\h the exmature cwcuit
@ sevies resistence is connectea! with cxmedure . a
® pallet yesiztence is connectcol with ecrmottuve -
© armdlure St bemporenily open ervCutteo!
®D = high value vesistor is comectec! across dhe fielsl winelne
1B6-what will happen cdo tourque if bacty emf omol speces of th
Dic motoy is cloublecd ?
@ Remain uachangeel ® Realuce to ome-fowrdh velue
@ Be chublesl
O©lmcrese four Folals ae! —S.:,C -
134- the ovmellure Velhute
D constant power oltve @oen
© consteatt curved olive @corsteutt
ree ot Oc mewaley won floviote —
stent Veltese elvive
es 208 olive ~
ait the ees sterling = De
exmeilure curren Shee Howry
135-As qhere ts wo back emt
moter, in avler te prevent oa Dea
Ahvoussh the oxvmedure circuit — zs
@ series Yesistemce is connecteal iesentacc ee
® p-rellel wesistance iS connecteel with encmrerture. -
© armedlre is bemaporenily open civcuites/
®D & high value vesistor is comectee! acters the fell wireline
| {ge-what UL heppen co temque back amd ened sprees of A
Dic motor is cloublecd ?
@ Remein uachengeel ® Reoluce +o one-fourth velee
@ Be chubleal
©wcrewse Four Polels oo
atmeture curvert —rburque Si. oe Oe A eee eee
on expply > ik will \edrave Ke
@ Wighly yesistive civeud ® low wsistmce ctveurt
© capacitive cnc @inchetive cxvent}
493- Al alhers a wolvankaaes ef De mdey aver AC moto¥
except ——
@ie cost vie eptecl vane
Sarabiiey Owe stadia, toque
ce nee
fat oo designee fey 45 C wheat tennperctives
ey to ee ee eonbient temperedure 5 Rhen the. woba_—
@aoh [ower UP shold be selects!
o- Vasher We hell be 28h
Oc be sel fev GO C cambiedt Jemporchore ells
@Is to be cle-verte! by + Pactor vecowwnenalea by wonufecharey end
select dhe newt higher Wsp- odes
ae develope! by a DC meter olepenels upen ———
@® magrelic Felel
®eactive lengfh -f the Corchicrtor
© covert flee {rough ane concluctoys
© coven 5 active length > No: of Ree magnetic; felel ae
{U-& very sensitive a viele spexal central 5 which eee
Jallowins, methel is pichevveel ?
@ Mimedure conte! ®erel- Leonerel contvel a
volase cette’ @ Fidel control
© multiple
ethecl is useal §or the speeol —
[i2- relol Weakenina, Contycl yt
a ) Nove reiteck speek @ Below yetleol specol
© can be vstel cmywhere Wut fell filet werkenney ——? above
contrat reethect Yateot =f colectest
bie temporclure alse
Yecommencleol by wranifeecturey conch
Fis. we aol be
can be useel fer SOC o™
Is te be cle-vertel by * Pactor
select the next higher Wep- aie
ie cleyelopeo! by a DC meter
@ waynetic Pelel
®active len th ef the corchicrtov
© corvert fide Pragh the coneluctors
© corer 5 active lengths Mer of conchichovs 5 magnetic felel all J
colepencls upon ——
111 -f« very sensitive nel wile spesal control 5 which of the
Jollowina, methel is Dich veal?
@ Nmaluve conte! ®wel-
— ©multiple voltage cothi\ Dried evel
[i2- Frelol Weakeninay Control wel heacl is useal Sor the spel —
@ Aoove Yetteal spool” @WBelu Yatleol specol
© can be use emyshere @ cuit fell filet verkeniny —— above
Conbrel reed hoot Yateok spe
adatune vesistan: .
ene ea Pe of
Leonel conlvo\ y 193- Mvmneduve Yesistance cenfyel mchool is use dor the
; Sprecl
DAoove Yeteat speeal @Pelow yateo/ speea| ~~
© can be usec saw Oreatt tell
4 " . a
ae oe function is pel by courter emt of a QC restr?
@ Excesat Supply voltae ®Aicls Ve
20d - By which of he Fellerinas os beeen eye ts yedecl 2 S
@D cumenit on) @ current ane! volbage
© curyent anel Velhase ® wre s voltage , frequency enol shot
cme Frequency Fime cuwertt
210- which of (he followina, equipmest, Ny regulating fhe
Voltage voc in olistyibufion feelers will be mest economical '
@ stedlic conclensev ®D syrdnonous conclenser”
© lap chaning, Trensfriner ® Booster tranchevntey
le he Freier of velhase gproeeol in Case. of Spretters
can be incresiseel by
Busia Yecteys @dincvessins The occa!
©Aoljusting he syeinor/ © Rechrcing eee Vol tage
212- In Aluminium coneluctors , steel cove is peviehal te
Qreempensede for skin effect
DNeutialice proximity effect
© Reckce line inolucdance
Olncwase (fhe Tensile strength