ashu Paper 2

7/27/2019 ashu Paper 2

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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


12/13

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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

Documents

ashu Paper 2