8/9/2019 Electrical Engineering Objective Questions Part 4
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8/9/2019 Electrical Engineering Objective Questions Part 4
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w
w . e x a m
r a c e
. c o
9
IU
.
II
13
An IC smJcture is sh
own in
lite
gi\tn
fig
tJJ\:, The d ~ ' \ 9 t c ll
tlll cmt
l1c l\:lllizcd
l > c t l l < > : t t l l l t 1 1 l i t t t
$ 1 n h d c d (t1
t1d
tJ)
is
a
a.
Resistor
b. Capal.ilor
c.
Bipolru-
u
wtsistm
d. MOS
lrill Si'ilor
The c o n i ~ J c t
bcill•'\:11
alumin
um (All
dlld
mod.:rnlul
y
dopL
ur
ampliflllf,
d1•1e
iJ
a.
~ o
pbnsc
g ~ 1>. 1\•ecn
in
pttl and
l illpUI Vll lillgC:S
b. 1go
•
phnse dumgc b e i w e ~ . ' l l
inpu1 tmd
11U
iplll
C ' U m . ~ \ I S
t . No pbast chan
ge
betwl'i n
ittpul
tl1ld
lllllp
UI
CUT and
11
0 pruse
O O l l l l £
~
lte1ween inpul
and
4l1Jit1L
1
ulloges
d,
l'fo
phnse chn
n
gc i)ctii'CCn inpot
nnd
uu
l
pu
l
u r r c n t s 1l ld
181)•
~ ~ > t ~ cha
n
ge
bd\WCO 111
pUl
and
001pu1
I
l L O ~ f
Tile lond
curren1J, fn
~
gl
1tn
drc
ult
+20V
a
Ill mA
b
411
"11
J
c )jm,\
d.
20
m.l
lkll
In
cmihcr
coupl
ed diO\,rcnliol
11111plifier
8/9/2019 Electrical Engineering Objective Questions Part 4
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m r a c e
. c o m
11. Ill
sutcl llt
COIIIIIlWIICllllOII
b
fn I V J X 1 S 4 . " l l
C r c o
n i e < ~ t f o n
c.. To combat fading fu mtcruwaw
Cl lJIUJIW Icn lJ
OU
l TD increase repentcr
SJI' Oing
in
microwav-e link
19. Smnhs chnns n
re
used
111 Qll
lllrn he:
mtpedance rclanonsalon£
a
a L o s s l c s . ~ r r n n ~ m l s s l o n l m e
for
diOerent
load i < u t ~
b LosS) l
t.m
sm1ssion l t n ~ for diOi:rcnt
loa,lcondllliub
c
Lo >y i o n
t ~ n n r n n U u
l
oa
d cqu.,l to
fine c h u r a c t ~ s
rmpcdancc
d losslcss tmnsmr.l51on
hnG
ICOllliiUicd
aL a load eq
ual
1u line cbaroclcnsnc
Impeda nce
20 A f r e q ~ n u y · m l d u l u voltage wave iS
g1ven as
V= 10
sm(:l.:n5
sm
400m)
The
Ctlrricr
froquency n
nr
l 1na.xmnull
dev 1o
1()u
o
rth
e Sii Jin l nre C . ~ I ) l i : C t i v c l v
a
IOMH7.mxl H 1 .
b.
100
MH l ~ m kHz
c
10
M t Mtl
I
ltH
d.
I00 MHz
mtd 10
kHz
11 A DSB
-
SC s1gnlll
being
Cletcc
l.:.1
n o h r Q n y
The phnm- error
in
he
locaUy geuemred canier will
n Cll ll'>C' phn.o;e deloy
b.
Ciluse
nhase distonio
nonly
c
Have
the·effed dOil'l
mi
Cl
sm.1ll
er i t . ~
A B C D
~ I d 3
b 4 I l 2
e
I 4 2 3
d 4 I 1 3
25
.26
J ol I I
for tile H
11ng
bloc)( ~ o d ~
tr
·n' b
t
01ol
ll'ord lcng
ll
t
uf
the blo
cl.
and
'II
' he
~ < : number
of m o m
b1
ts
.
Ulen
an
UJIOwablu
8/9/2019 Electrical Engineering Objective Questions Part 4
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28.
29.
30.
1
33
.
F ~ r
the p r o d u c t - o f ~
u m s
C.'
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List I
A GTO
th
yristor
B. Triuc
c
ICiB I
l
~ I I
L(SL
II
2
3
4,
i \ B
c
D
3. I 2 3 4
h I
2
·I
3
c.
2
_:1
4
d.
2 I
4
3
41 t'lull r.tl oOnirnO(:U.lqil
or u
lb
)
rl>tor takes
pla,ewbcn
9.
A
ood
e L'llrre
nt
beeomes lteto
b G>JtC current bel.l
8/9/2019 Electrical Engineering Objective Questions Part 4
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. c o m
Agwc
ll
Line
'olla11e
wi
th
120" firing
b I
,llld pi\IJ)o.> vnhnl c:
1\
alh
120"
fin Ill
e l,
lne
vollltllC
wilh I
&0 lir
11
ag
d.
Load phase
v o h ; ~ g e uh
ISO" i
ring
48
. The given figure
sho s
elec
tn
c
pu l
uss
lcs•
n c h r O
n 1 1 ~
Q5 U f UIIL'tion or torque Ullj IC 11ae
lo;td
ts Ud
denl}
tncrcnsed
fonn P
11
to
1
n r u l t h
motor oscillates around
6
•
between
l ,
jpl
/) ' '
cr
0
6, d,.
d-
uw
Conside
r
lbe
lrnlowing slatements demed
rro111
l i ~ : u r e r u i n ~
t
h
b . . ' l w e ~ n the-
tuowr
5po:d
' aud tl>
s y u d · o n o ~ speed
M,
at dtffc rent
points
tn
tbe oscillating
cycle:
II
AI
j)OIOI
I .
1tJ
c
m
liiJ
AI
JlO
II
ll
1.
w
hil
e
OJICIIIn
llll
g.
f'Min
tow
nrds 3.
1'1 '- 11
Ciii)A
t
poim
L wh ile
oscillatin
g from 3
towards
I n1
•
ro
,
\\hadl of the$u \ . ' t n C t ~ ~
h i
a' Ill
h l l l l
willt
the
lane
d
Lwnped
capacitances m senes wrth the
li•w
A lnnsm•s>oon
hnc
has eq ual
voltages "'
tile
lwo 1 /ld$
,
nJtutoltlllled COilStan t It) lwn
r c ~ A tbotd o fQ\
1ded
to
maintam
nJDs
lanl
o h a ~
(equal to
tl>e
end
vo llagcs)
at either Ute
mld-poim of
tl1e
li
ne
( c n ~ c 11
or
at 75'
1
o
oflhe di
slttnce li'mn r h ~
em
l (C
use
2) 1hen the ma\Jrnuna
power-transler capabilmcs of
Lb
e hoe m
the
o n g ~ n f t l
case I :lJJd case 2
u v e l }
will be mlbc
ratio
of
I I I
ll
11 1107.5
o. I 2 1
d. l:4"16
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8/9/2019 Electrical Engineering Objective Questions Part 4
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54
ss
56
57
A s)lort length
of
cnble
is
connected
between dead-end towerand sub-stadon at
the
end
of a
trnnsmissi'on
line Which
of
the fo llowing will
decrease,
when
voltage
wave is
entering from overh
ead
line
t()
cable?
I
Velocity
of propaj ation of
voltage
w
2
Steepness of voltage wave
J . Magnitude.urvol
wgo
wave.
S e l e ~ 1 the correct
answer
using the codes
given
bel
ow
a
I
and2
b 2 nnd 3
c. andl
d.
4
2 and 3
The coro11a contn'butes a rd harmonic to
Ute chatgJng currant of the Lne.
because
it
a Occurs every half cycle of the
fundamemal frequency
b. Induces a
rd
hannonic voltage
bctwt,-en line and eatth
c Produces random
h a r m o n i c but
on ly
3rd harmonic is pas IC or Ute
Maloperation
of differential
prorection of
transfomters due to magnetizing inrush
cutrenl is prevent
8/9/2019 Electrical Engineering Objective Questions Part 4
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. c o m
3
.
64.
n ~ r c m o m o l
fuel oons 11 JU
t
MWh for 11
plum O M pf two unan lite
gi
ven by
dF, dP t •
0 A
4 0 0 and dF
1
rdP: 0411
I
320.
fha allocation
of oallls 1'
1
and
P
1
between the
l l ~ ~ I and
2. ~ p e c b v e li11
mhumum ~ ( l $ t 1>f gencrn lt
on
lbr a total
load ofllOO MW 1s
a
200 ~ 1 W
and
700 MW
h
JOOMW
nnd MOMW
c. 400 MW nnd 500 MW
d. s
oo
Mw
und
400 MW
Gwe
n (jgure
nn
elec110magn
et to
lin a
load of
W gram_
A'iSu
me mfmite
pt'nnimbih
ty for rron. 'be ampere
turn
s of
the exciting coil to m:timain an
eq
tiillbrium
nn
air-gap nf mm would
l:le
g.ven by
. ......
"-
o_g74
ll
·x
[I
b 0
282
IP.r
r
c
s74 IJx
.JA
d.
2
tlliV.t
. I
'
(1te
. > e f i c ~
11
1nding or a cunaulativdy
C u m p o , t
J e ~
de
tnotor
1S
shu"
-clrcllilo.l
wbtlo dnvmg a. load at
rated
lof
II£
shown 111
the
, l i V ~ I l
llgun:,
Mixhlne.A Mao5J
h\ c and V" is less than V
u
b Positiw nnd VA is thnn v
c.
NCW Vc nnd V,, l. ss Vn
d Negative
and
V"
tS gJ
8/9/2019 Electrical Engineering Objective Questions Part 4
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w . e x a
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. c o m
9
711
71
ll Bo th
IW und
C\\ ore
~ O U I I O : C
hi
< e r l ~ s
with I ie
uon01rc
"uldfn):;.
b Both
I
W
nu
d C\V
01
connected In
purullcl wilh
the
nnnniUre \\11111111 ,
c:.
IW
tS
cuun
ecwd
c5t'I'IO:S hul CW 1s
111 pwa llel
with
the arnJJ\lUre
win
din
g
d.
1W
Is
COIUle(:led
in
parallel
blll
C
\\
is
connected in senes wnb the
annnlure
winding
A
J-phasc 20-polc, synchtOltOCr plm.SI.l
1s
neares1to
lL
500
v
b.
1
000
v
c.
15 v
d.
2000
v
11te Z.ert> Powl:r Fuclor
Char:lc1etl$
1e
I ZPFC), niOilj; willl
the
Open
-
Citcuh
Chantctoris lic (OC\1
:U
oho-.n
in
the
v e n
l i ~ ; u e
urc u
se
d
ttl determine the L e u k u ~ e
RcadDIICO
DrOl ~ nt he nut:d cum:m 1,
fro1111
he"Po
1l
cr
r i n n ~ l e '
AI3C
' '' ' 'glc,
c n:pt'CS>;I'"'
1.,.
I- V, )
dr(lp,
~ C I I U
o e· r·
r , _ ,
u. V ts mduccd.by tltc mmf All
b v, IS induced
by
l.he mmrBD
t: 1/
( Is induced b}' the nunfOF
d.
V
l:
and
the air-
gn
p
volmge
Er
are
180
•
out
of phase
at
zero p,(
load
To calcu late
t
he full
- food vohage
regulation of • synchronous ~ : e n e r a t o r al
omy < N e T
fi
tclot u.-lng mtnr melhod, [I tl
require
d to
ha
ve
11 Opcn-cll\•ull n11d shon - m ~ 1 1 1 1
m c l c
I Q S
b 0 1x:
t1
- oh'Cull
mtd
z ~ r o p m ~ er
fuQICJr
chaructt1ist
lcs
. , , , 1 ~
c
Oj)( ll
- ctrcull
b n r n n ~ u c ; s
lidd
c u m . ~ u
111
rutcd swl'l· ofrcuu ctll'lt111
and lmlln lltr
r c ~ i ~
d SIIQfl CirCilll Cl\llfiiCtt:nJiiC$, r< fO
flOWer fnctor Cl i111tC1enpeed rermlins rh osumo
71\
( < I I I S i d < ~ the
olf ()WIIIl i l l l l ~
A octhng lilt1
l
uls 111 l)ecm.se
I 1\fQm wmillllg
1 .
ClfCII-C II
'C\1
11
«1
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8/9/2019 Electrical Engineering Objective Questions Part 4
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. c o m
2 Awohruy < V m d l n ~ is open-meuned
J Cap:u:iw
r is s
llon-circult..:C
d A is f.9lse but R is true
80
A.o;sertiun lA): Ir he Vllltugl'S ocros:. R. L
and C'
dements
comti.'Gt
cd
m s.m.:s In an
uc C1rcwt a r ~ 300 V. LOO V
and
500 V
r.:specnvcly , then the
to
tal
voltage
applied
lle500 V
Reason (It ): 11lo oJlllhc'tl • u l t u g ~ m LCR
sencs c 1 r c ~ h
1s equal to
the
mux
tmum
Joofl.t
voltage exrstmg a c r o s ~
Wl)
of these
el
ements
.
a Botb A nod R
are
true and R Is 1 1 1 ~
correct explanauon ofA
h Bllth A and R are lrue but R is NO I
Lh
e correct e"Jllannl l
on of
\
C A IS
tn1e but
R IS
d. A
IS
false
but
R
IS
true
81 A s . ~ e r t i o ( i\ ): l lnrdwute stack regi$1en;
speed
up the qpcmti(ln
qf
com]ltll
er
,
Rl llson (1{):
llnrdwllte sracl ' ~ t s
r ~ d u e t : the number
or
memo ) rererem:es
rcqu1red
11. fl1fl
:m
atmn or
A
\ i>
true
bUt R JS
faT<
d A is false but R
fs
l ue-
ln.
8/9/2019 Electrical Engineering Objective Questions Part 4
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. c o m
85
86
87
ss
c,
A is tTUe bu
t
R s false
d 1\ is
i i l i ~
but
Ris
true
Assertion (A): Square
law
detectors.
t Jough simple, are not s ~ t i s f a c O lor Ote
~ t i o n of amplitude modulated sig11als
Ren s
on
(R):
Square
Ia\\
detection leads to
l ~ t t s ~
second
bam10nie
f
A
b. Doth A 'lind R are 111.1e but R is NOT
correct ex planation of A
c.
A
is true b·ut R
is
fa lse
d A
is
false
but
R
1s
true
For ~ o t w o r k
sbown in
the
given fi ,'Urc. the
CUITent in the
20
resis1or wou
ld
be
;t.
. 5 A
b 20A
c, 251\
d. 30A
In
the _given
elrcuit.
initially
relnxed,.
tben
circuit will be
R
11 . .Zero
b
/ / 11.0{1
t
/II
c
-
f
-
I.
tl
.. ..(1 t
I /,
tf
the
inductQr is
the current
i ll
tlte
lu a two-po11 network, tlt
e output short
c::illlU1t
currellt
was
measured
while
the
W t rce vo
ltage
at th
e i
nput
was I V, the
value of i l ~
ou
tput currc,tt
would
pro,iM
the
parameter
a B
b
y l
89
90
"ll
I I o I I
c. y ~ l
d.
Ao
RC drlvins point impedBJlce
function
has
.
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. c o m
9d
.
?5
11, 10
.15
b. II 2
c. 8.7
d 4
. j
The 1oltagc
v,
, for lhc
circw
l shm•n m the
IV
Cn
llgurc Wi
ll he
a.
b
v.
(1- ~
c
·t
::-·
)
d ~
Tho
de
compon
8/9/2019 Electrical Engineering Objective Questions Part 4
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. c o m
d
_,
103 A
systc : - : f ~ : - C( s)
G
1
(•l ~ ( J l I
- H e}
a
Gl (
..
)G
, (·
)
II
()
(s t I)( 1 3)(s
4)
Two branches (loci) of the
pint
drrected
along asymptotesarecentered at
a po1N
a.
3
b 4
c 2
tl - 1
T
he
number of roots
1n
the lefT-Iialf of s·
pl
ane forthe
equat ion s
3
-
4i+
s+
6 = 0,
would be
a.
b 2
c.
3
d 4
Consider the toll owmg features;
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8/9/2019 Electrical Engineering Objective Questions Part 4
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1.
S q u i m : l ~ g e or r a ~ · u p
type rotor
.
2, N c : ~ lutenr
chnr. cte.istic.s.
3.
H1gb
X ' R rotio.
\Vhkh
of
thcs.: f ~ t o n . s ure I
IOSSossed
by •
two.,hase oc secvomototl
a
I
_,Z
and 3
h I and 2
c. 2 ond 3
d. 1
ft
nd
:l
·ntc c-urrent T fluwiog Uuuugh 11
tcsistonuc ur v• luc l000 l. 0.
2••
4Aj; o.s•.,
The
un
eed a iuty
lu
m e . u ~ u r c t u e n l of power
i,;
:
1600
\V c .
O,Ol
0
o
b.
1000
w
. .
0 2 ~ .
c. 1600 \V : O.OS
1
' o
tl
11\()0 \\ 1,2•n
114
.
T h ~
m p c < l ofn hnsio t bridgd ntm
l
an:
~ = 2 5 0 Q
rl.., = 0 0 ~ ~ ~
4 0 0 0 . .
Z. , - Unktto
wn
l
li l
'
lOOt)
rndiani>
, comp
on
of
t h ~
unknown
: arm
h:
the.:
resistance:
soo./iO n
n.
Series wiUt a e
apoc.itoJ
' o.f
2. u F
b. PMallel with n cn pac
uurof
2 11F
c. Series
whlt
an inductm of 2 tt
cl P:trallel with nn l n d u e ~ o r o f 2 I H
US . In n low power-J\Ic.tor waumelcr.
t•m
c
Which one of the followina : a u s ~ Ute dis
o
[n au indUCtion type of .notm nl