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IES: f
OI.lJ
)
211
I o(l 3
ELECTRONICS
ND
TELECOMMUNIC TION ENGINEERING
2.
3.
4.
PAPER II
If the
ma
ntissa
in
th
e noali
ng
point
represemation ofa number is
37
bils
lon
g,
lhen what
is d1e acc
uracy
of
the digital
computer?
a. 37 decimal places
h. 23 decimal places
c.
II
de
ci
mal
tilaccs
d. I0 decimal places
Which one.of the fo llow ing is correct?
The convention is that
th
e numb
er
0 has
Ute
normal fonn representation as
a.
0
b. 0
c. 0.0
u Oto
f. hllch
Lss
t I with List II and select the
correct. Answer usin the code given
below dte. lists:
Ust-1
(Pascal Operator)
A
=
B. < >
c
.=
List-If
(C Operator
I
:;
2.
- -
3.
=
C)de:
A B
c
a. 2
3
b
3
I
2
c. 2
I
3
d.
2 3
For inlerfacing of assembly language
routines
wi th some high level lang
uag
e,
one
mu
st address which of be fo llowing'/
I. How is tlte subroutine in
vo
k
ed?
2 fiow
are parameters
passed?
3. How arc.
values
returned?
4. How many parameters are passed?
Select the conecl answer using
Ut
e code
given below:
a.
I
and 3
only
5.
6.
b.
c.
d.
2 a
nd
1 oul)'
I, 2
anti
3 only
1, 2, 3 and 4
2
3
A------- c
1
Considertbe directed gra
ph
showo above:
What s its incidence matrix?
- I - I
0
a.
0
- I
I
0
I
0
- l
h. I I 0
0
- I
- 1 - l 0
c.
0 I I
0 l
0 I
d. - 1 - 1 0
0 _ ,
The parallel computers arc divided into
whi
ch of
'
following architec t
ural
con:figura
tio
n?
I . Array processors
2.
Data
processors
3.
Mu
lti processonystems
4.
Pipeline computers
Select lite correct answer usiug the code
gi
vcn
b
elow:
a. I, 2 and 3 only
b. 2 1 a
nd
4 only
c.
I 3 an
d 4
only
d. I, 2 and 4 on ly
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1.
s.
9.
10
.
I I.
Tn nrder
1n
hui
lrl
3 hi1
si
mullnneou .vn
Cl)
nvertt:r. what ;,
th
e ou
rnher Cc
.
th
dy,
thMt Wilidi 0 1\C
uf the
foliOVng COIr
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6
17
.
18.
19
.
20
.
1
Power J
)e(:trul
denSity is independent
wing
is
co
m :ct?
In a TOM syt(;m each s
ignnl
nUotted
in
l
'rom
o o Unique nd i ~ C i l
a. lreqnency slot
b. lome s lot
c.
oroplitudc
slbt
d. phoses lut
Mo
lch List
-1
with
Lill
t-ll and
s"
l
.c
t lhc
com:c1 i . l n ~ w e r using the c.odo iwn belo\V
1he lt. tsr
Lis
t-1
(Medium
Twe)
A. Ojx:n v.i
rc
B. T w i s pair
C. Coa.' iai-Able
D, Wnveguid.e
List-11
(Fmquency Tunge)
I. I00
kHz
1 f()()
kHz
3. LOO GH
>:
4. j.,() kHz
Code:
3
b.
c.
d.
A
4
2
2
*
B
:)
1
c
2
I
1
3
Motnh List-1 with Lis tll and select the
conect answer using the code given below
Ul
e
lis il :
Lisl-1
(Section)
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A.
IF
:unplilie.-
B. Mixer
C. Detector
D. Automaticga in conl
rt>l
Li.sHI
(l'unctiJcd IOUJI gain
of
he aruplilior ?
Jl. 33.3
b. 5
c. - 20
d. -25
Molch
List
-1
with
Lis
Hl
and select the
con C Ic.l answer
u
si
ng
tJt:; code give
n
be
O\
lhc lists:
Lisl-1
(Type ofFeedbacli)
A.
Volta
ge series
B.
Vo
ltage shun l
C.
Cu
rrent series
D. CIJITI:IIt $l&UJ t
List-11
(E IT
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33
34.
5
36
An
amplltier has gain A =100
_ rso.
upper cut
on
frequen
cy of 1
00
kHz
on
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42
.
-B.
44.
List-11
(Property of he circllitl
I. Non-liner cironit
2
Lumped. linear passive, bilateral, lin
to
circ.uit
3. Large signal
:ompliliet
4. SmaU n o l
'l'lifoeo
Code:
A u c
n.
4
2
b I
4
'
4
3
I
D
3
2
2
l 2 4 3
A di
c:ri
ult In
c
hn
ge
of
output power
b.
output
pulsowidth
-1
6.
-17.
-18.
49.
so
51.
6of 3
c. outpu t frequency
of nper.1t;oon
d. out ignnl 1 1 nois ratio
l l
1e main
pu'l>ose
of inser
tin
g a
microwJvc i5olatot
iu
a utic.rowa vt: i r ~ i l
is
for
a
._
offerlng minimum forward
imped1111ce
b. olfering max imum power out. pul from
r
e
source
c.
maint:tining lh:quency
stabilil)' of th.o
6QUI CC
d.
mint:uning amplitudc tability of
output power
Tile underlying principle of W()fktn g
of
3
cavity
w
ve meter.
u ~ e d
10 meas
ur
e
.fr{;(
t
Uen
cy of microWal'cs in a systenl.
is
a. Selectiv >b$Orptiou
of microwave
energy
in
solids
b. Selective $Cattering of microwave
e
nergy by cav
it
y
c. Rc.'-nnancc o
mi
crmvavc:s arou
nd
cavity f\ souance o a
cctvily
wi
th
n
comin.g
i c r o w
energy
A rubv maser is considered
lo
be superior
lo
n
A.
nm
onta Maser b
ec::
mse
of
''
hi
gher power output
b. I
O\
~ i g n o
noise rntio
~ g r c ~ t . : o b o n d
width
d. low amplifi.:ntion foetor ond low noise
levels
(24)8 is
e-'(jlressed in
gray code
as
wh
ic
h
one
of
the l'iltlowing
a. IIU()()
b. IOLOO
c.
11.110
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52
53.
54.
Un the 8085.
wbi
ch of
lh
e
Ji>
l
lo
w
in
g
machine
cycles are
pc)l u;;ed
in
Lh
"
CALL
ins truction'
J.
t ~
2. l 0
3.
Momo
ry Re
od
l\
le
cnory
W
ri
te
$e
leel the co
rr
ec
r
nn
swer
n>
in
g the
"'
'rle
given below
>.
2 ou
ly
b. l
nd
c.
23
ond 4
d. NOne uf lhc nbuvc
In
80H5.
i f
l1c d od
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64
Neutrn
lilJng capacttors
noiOlla
lly
used
111
a.
Audio amplifiers
b Video amplifiers
c, RF and IF amplifiers
d. Operational
am
plifiers
CIS. Silicon diodes
are
less suited for low
voltage rectifier operation becau
se
a,
il c:umot wi ll1stand
high
temperatures
b
i
s rever Sc-
sa
luratiun cu
rrent
is low
c. iIs cut-in
vo
ltage is
high
d. iiS brealt
do wt
voliage
is
high
66. C'E configura
ti
on
is Ehe moSL pre ferred
transistor configura
ti
on
when
u
sed
as
a
switch, because
a,
i requires only one
powr
supply
b.
il r
eq
uires low vohag" or t'tmenl for
operattLg Ihe switch
c
il
is
easily understood
by
v ~ y
one
d
i
Lhas s
mall
l
tl t>
67 The figure or meri l or " logic fam ily
is
,.;ven b)
a, gain bandwidth product
b (propngation
dalay Lim e)
x
(power
diss
ip
ation)
c. (fan-out) x (propagation delay time)
d (noise margin)
x
(power dl
ssi
pati
on)
68.
' "be
1
2
L (
1J1tegrated
lnjeci
Jon
Logic) bas
higher density
of
irllegra
tlon thaQ
T'I"L,
beGause
it
a. does not require transistors with high
current gain and hence th
ey lu
ve
smallergeometry
uses compac
t
bipolar transistor.;
c.
does
no1requirc
lsoletion di t'fusion
d. uses dynamic logic Instead of static
logic
59 Wbicb
Dnc
of the fo
ll
owr
ng
statements
is
correct'/
a.
PROM
contains a programmable
AND
array
au
d a f
Lx
ed
OR array
b. PLA
co
nraiu
s a fixed AND aJT'dV and a
programmable
OR
a
rray
c
PROM contains a
foxe
d
AND 8J
rsy
aud
a programmableOlt array
tl.
PTA
contains
a
prgnmunable
A}fD
array and a fixed OR array
70 How
mauy
bits
will
a 0/A coov"rter use
so that its fu11-scale output voltage is V
mid is
resolution
is
at
th
e most I0 rn
V
a.
5
13
b
7
C
9
d. I J
71. The impul
se
response of a linear time
invariant system is
giveu as
g(t)= e' ',
t
> 0.
The 111 JJSfer fuuction of UlC sr stem is
eti
UIU
it);
a 1/s
b.
1/l t l) l
c.
1/(s 1)
d,
s/(s
1)
72 ln
case
ofd.c.
servo-motor
th
e back-
emf is
equivalent
O
an 'electric ftiction" wh i
cb
ttmds to
a. improve stability of the motor
b. slowly drerease &ability
of h
e ll
tO
tor
c
very
rapidly Ue
crease stab
il
ity
of
ll
te
motor
d. have no e'fect n stability
73 A system with gain
margi
n
o s ~
to urtily
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77.
78
.
79.
so.
c.
O< K 3U
d I K
-margin
(OM)
a n ~
phase margin
PM)
of
hesystem ?
a. GM > 0 dB and
PM
> 0 degree
b GM > OdB and PMe
g
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93
.
.
97
.
98.
?
c. \ ;nrinliun
of
relf:11::five mdex
wl1h
heigbl
d. Nrme
nflhe bove
lu
u
'Ownve communication
liu.b
., what
causes int
7
A
double c.onical rellector
h. A heliel ;lnlenna
c. A pyr.mudal hvm >ntonon
tl.
A
h
og
-hom
ntenna
A
mlcrowa\'e
anl..:ltua-dtaracletislJcs a r ~
~ b - t l
ns, low
weight,
low
power
handling copacity and
191'
bond1vidd1
.
What sball U is
be?
"" Helk:rJ antclllla
.
raJ httm
ntenn>
c. Micro-sllip patch antcnuu
d. Microw:tve dipole autcllllJ
\\llust ll a wuvc..--guidc ,lcvice whi
ch
i1
designed with steps in eidter the magnetic
nr electric plone known.-'(
"- Cnceller
d. Reacunce
folio
. is u s ~ in ut.icrow:we
ntiw
orkb-1
a. P
ha
se shift
b. Resonance
c.
Polariztion
shit\
d.
Gymtion
101. rn a wvegllid" network. here is
component
wruclt
eollllisls
uf :m
p l ~ n c
Tee combined witlt
>n
H-planc
'fee.
What
is tltu; oo
mponent generlly known a7
:
, Din:cti(lnnl
f
:e
b.
Phaed
a.m y
Tee
c.
Couplet
'I
ee
d.
Magic Tee
l02. Phase f o < : u s i n j ~ . wluclt l e n d tu hun.,hio,g
of
clc..:trott'
t.Jw.,
pluoc
iu
wlticlt une
of
the
follow
in
g?
a, Double reson31ttr Klylmn
b. Rene., Klystron
c.
T\V'I
d. Mngoctmn
l03.
In
n mugnctti)O
Qscilla
tot.
lloc
.
lrnprowmCnt
of Kl:lbj]ity nnd
efficienCy l
ll
:1chjevod hy
which
h n i c
a. Strapping
b. ( 'ross coup ling
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107
Se
lect the correct answet usmg the c(l(]c
1pvcn below
a I and 3
b
landJ
c_
l and2
u.
J Otl
l)'
C o r t ~ i d e
lhe root loco plots
jw
II
\
H
---&
t
corrt. et
?
a
A
b. B
c c
ct D
;..
a
I )S Which one
nf
fo llowtng
sln
u.ment>
correct fir
mol
Ioci 'l
a. The
root
loc t urc a>')'rntnclllcal wllh
respect
to
the real
ax tS.
I>
The
roo
t
loc1
are
sy
mmetri tl
woth
respect
lo the
real
axts
109.
110
l l
12 or IJ
c
TI1e
roqt o u 1ies in u St: ttiOI1
oftllC real axo to the l
eO
ofwlueh an
odd number
of
poll'S
and zeros
of
open
loop sy:;rem
1lfols or
the
chaructel l
stoc equation traced ou1n1the
s-planc
a as the
input of
he system
IS chat>ged
b.
as
the output of tilt' syswm is changed
c..
as a t ~ m pammeter is changed
d the sensotovuy is changed
A
me
mory 'ystem of
size
32 kbytes 1s
required to
be
des1gncd
LtS
tng memory
cbjps wtuch bave
11
address lines and
4
data
lmes eadL What 15 the number
of
such chips
r ~ q u i r c d to
design t11c memory
>)'S tem?
a.
b 8
c 16
d. 32
fllol
Ult;
1 r
,--,
l"" l ';----
C"\l
r
C
LIr
c
uit
iiiU
;t
rmes a I)'Ptcal
apphcanon of
the JK fltp-flcyps
.
Wbm
does
lhts represent"
a.
i
shirt rogtsror
b A dutu
~ t o r a g
dcv1ce
c 1\ f r q u ~ t dtvider circ
ln
l
d A decoder corcuil
A digotal mulllplcxer can lJ< usctl tor
which of the tolluwing?
I Pamllelto serial co
nversion
l M a n y ~ > - o n e
swtlcll
3. To JCocratc rncmory chtp select
: . for code conversion
Select
th
e correct answe r
usong
the cod
"lect
correc
t tm>ller u;i
ng
the
cod( gil
tn
btl
tm
th list:
Lis
t I
A. I
mmedia
te acJdn:5
:,iog
B.
l
m
plii.-d ~ ' < \
t .
t ~ r
a c l ~
< l n ~
D. Din'l:t
acldn:s>ing
I
i>t II
I. LDAJOII
2. MO
V i\,ll
J .
LXIIU
050
RRC
Co
de:
II.
I
b.
c.
A
J
2
J
l
H
4
(
2
3
3
I>
I
4
117
.
118.
119.
I_; f l3
C
v
fhc
tbfi
Shold1
o
ltajle
fo
r
o r ~ c h transi,tor
in
the ligun:
SOO\\ n abo1
c
is 20 V
. Wh:ll are
thc
,3J
ucs of V
fl)rthis circuit
to
or
k :JS
an in1
ener1
n. -5V
and O
V
b. -5V and 5V
c:..
UVand5V
d. -JVand
3V
c
~ : : : : : . . . . - - 1
t Oft
X
for the lo
g
ic
circuit
:.holm in the
ttbo>l)
figu n:.
whut
i>
the NQUir
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