-
Reactive
current through the capacitive load produces -
a)
Magnetic field
b)
Electric field
c)
Supermagnetic field
d)
None
-
One
of the following which gives piero-electric effect is -
a)
Mu metal
b)
PVDF
c)
Sapphire
d)
Ferrites
-
PZT
piezo- electric materials have -
a)
Higher curie temperature
b)
Lower curie temperature
c)
Absolute temperature
d)
None
-
The
residual resistivity of a binary alloy at OK is -
a)
The sum of the residual resistivities of the component metals
b)
The difference of the residual resistivities of the component metals.
c)
The product of the residual resistivities of the component metals
d)
Dependent on the concentration of the minor component in the alloy
-
In
active filter circuits, inductances are avoided mainly because they -
a)
Are always associated with some resistance
b)
Are bulky and unsuitable for miniaturisation
c)
Are non-linear in nature
d)
Saturate quickly
-
The
depletion layer across a p-n junction lies -
a)
mostly in the p-region
b)
mostly in the n-region
c)
equally to both p and n region
d)
entirely in the p-region
-
The
voltage induced in a loop of wire rotating in a strong and steady
magnetic field is -
a)
pulsating dc
b)
dc
c)
rectified ac
d)
ac
-
One
of the following types of capacitor which is polarized is -
a)
Electrolytic
b)
Ceramic
c)
Paper
d)
Mylar
-
Electric
shock is-
a)
Always fatal
b)
Never fatal
c)
Sometimes fatal
d)
Always disfiguring
-
A
typical value of filter capacitor for 50 Hz ripple is -
a)
16mF
b)
10F
c)
10mF
d)
None
-
A
telephone relay armature is made of material with -
a)
High electrical conductivity
b)
Low electrical conductivity
c)
Negligible conductivity
d)
None
-
Larger
the value of filter capacitor -
a)
Larger is the peak-peak value of ripple voltage
b)
Larger is the peak current in the rectifying diode
c)
Longer is the time that current pulse flows through the diode
d)
Smaller is the dc voltage across the load
-
Barrier
potential in a P-N junction is caused by -
a)
Thermally generated electrons and holes
b)
Diffusion of majority carriers across the junction
c)
Migration of minority carriers across the junction
d)
Flow of drift current
-
The
polarity of VGS for E-only MOSFET is -
a)
positive
b)
negative
c)
zero
d)
depends on P or N channel
-
The
following which will serve as a donor impurity in silicon -
a)
Boron
b)
Indium
c)
Germanium
d)
Antimony
-
When
bias applied to a vari-cap diode is increased, its capacitance -
a)
is decreased
b)
is increased
c)
remains constant
d)
first increases and then decreases.
-
In
case of a bipolar transistor a is -
a)
positive and greater than 1
b)
positive and less than 1
c)
negative and greater than 1
d)
negative and less than 1
-
A
BJT is -
a)
not very sensitive to radiations
b)
very sensitive to radiations.
c)
independent of radiations
d)
none
-
An
SCR may be considered to be -
a)
2 diodes
b)
3 diodes
c)
4 diodes
d)
5 diodes
-
For
a BJT, under the saturation condition -
a)
IC = bIB
b)
IC > bIB
c)
IC is independent of all other parameters
d)
IC < bIB
-
In
modern MOSFET’s the material used for the gate is -
a)
High purity silicon
b)
High purity silica
c)
Heavily doped polycrystalline silicon
d)
Epitaxial grown silicon
-
Find
the Norton's equivalent of the circuit given below -
-
When
the source in the circuit shown is a sinusoidal source then the input
voltage is -
a)
10V
b)
5V
c)
27V
d)
24V
-
The
time constant of the network shown in the given figure is given by -
-
The
voltage transfer ratio of two-port networks connected in cascade may be
conveniently obtained from the -
a)
product of the individual ABCD matrices of the two networks
b)
product of voltage transfer ratios of the two individual networks
c)
sum of the Z- matrices of the two networks
d)
sum of the h – matrices of the two networks
-
When
a network has response with time as shown in fig. then which one of the
following diagrams represents the location of the poles of this network
?
-
For
the network shown in the given fig. the ratio
is -
-
An
attenuator drops a 10V signal to 50mv in an experiment. The loss in
decibels is -
a)
–40dB
b)
–6dB
c)
–55dB
d)
–60dB
-
When
the network has 10 nodes and 17 branches then the number of different
node pair voltages would be -
a)
7
b)
9
c)
10
d)
45
-
The
circuit shown in the following fig. will act as an ideal current source
with respect to terminals A and B when frequency is -
a)
zero
b)
1rad/s
c)
4rad/s
d)
16rad/s
-
When a short vertical grounded
antenna is required to radiate at 1MHz and the effective height of the
antenna is 30 m then the calculated value of the radiation resistance is
-
a)
1.58 W
b)
158 W
c)
15.8 W
d)
None of these
-
Shannon’s
law relates -
a)
antenna
gain to bandwidth
b)
frequency to antenna gain
c)
antenna
gain to transmission losses
d)
information carrying capacity to S/N ratio
-
One of the following
modes which has the characteristic of attenceation becoming less as the
frequency is increased and is attractive at
microwave frequencies of circular cylindrical wave guides is -
a)
TE1
mode
b)
TM01 mode
c)
TE01 mode
d)
Higher order mode
-
For
a transmission line, the propogation constant, for a TEM wave travelling
in it is given by (Where the symbols have the usual meanings ) -
a)
[ (R+jwL)
(G+jwc)]
b)
[ R+jwL)
(G+jwc)]
½
c)
[ (R-jwL)
(G + jwc)
] ½
d)
[(R-jwL)
( G+jw2c)]1/3
-
The
advantages of wave guides over co-axial lines would include which of the
following features-
1.
Easier to use 2.
lower power losses
3.
Higher operating frequencies possible
a)
1 and 2
b)
1 and 3
c)
2 and 3
d)
1,2 and 3
-
When a 75 ohm transmission line
is to be terminated in two resistive loads R1 and R2 such that the
standing pattern in the two cases have the same SWR , then the values of
R1 and R2 (in ohms) should
be -
a)
250 and
200 respectively
b)
225 and 25 respectively
c)
100 and 150 respectively
d)
50 and
125 respectively
-
The
degenerate modes in a wave guide are characterized by -
a)
Same
cut off frequencies but different field distribution
b)
Same cut off frequencies and same field distributions
c)
Different cut off frequencies but same field distributions
d)
Different cut off frequencies and different field distributions
-
A
TEM wave impinges obliquely on a dielectric-dielectric boundary with Er1=2
and Er2=1, the angle of incidence for total reflection is -
a)
30 0
b)
60 0
c)
45 0
d)
90 0
-
The
radiation pattern
of Hertzian dipole in the plane perpendicular to the dipole is a
-
a)
Null
b)
Circle
c)
Figure
of eight
d)
None of the above
-
40.
Permeance is the -
a)
square of reluctance
b)
reluctance
c)
reciprocal of the reluctance
d)
cube of the reluctance.
-
One
of the following which is an active transducer is -
a)
Photoelectric
b)
Photovoltaic
c)
Photo-conductive
d)
Photo emission
-
The
wein bridge uses only -
a)
Inductors
b)
Capacitors
c)
Resistors
d)
Capacitors and Resistors.
-
The
greater the value of Q -
a)
higher will be the bandwidth of the resonant circuit.
b)
smaller will be the bandwidth of the resonant circuit.
c)
nothing can be said)
d)
none.
-
The
most serious source of error in a) c) bridge measurement is -
a)
eddy currents
b)
leakage currents
c)
residual imperfectness
d)
stray fields.
-
Moving
iron instruments -
a)
have a linear scale
b)
do not have a linear scale
c)
both a and b)
d)
none.
-
If
accuracy is the main consideration, which one of the following
voltmeters should one select -
a)
100 v ; 2 mA
b)
100 v ; 100 ohm/volt
c)
100 v ; 1mA
d)
10,000 v ; 10 mA
-
In
dc tacho generators used for measurement of speed of a shaft, frequent
calibration has to be done because -
a)
the contacts wear off
b)
the strength of permanent magnet decreases with age
c)
the armature current produces heating effect
d)
there is back emf.
-
Ideal
transformer cannot be described by -
a)
h parameters
b)
ABCD parameters
c)
G parameters
d)
parameters
-
Consider
the following statements -
A3-
phase balanced supply system is connected to a 3 phase unbalanced load)
Power supplied to this load can be measured using
1.
Two wattmeters
2.
One wattmeter
3.
Three wattmeters
Which
of these statements is/are correct?
a)
1 and 2
b)
1 and 3
c)
2 and 3
d)
3 alone
-
The
function of the reference electrode in a pH meter is to -
a)
Produce a constant voltage
b)
Provide temperature compensation
c)
Provide a constant current
d)
Measure average pH value
-
Match
the column A (Devices) with column B (Characteristics) and select the
correct answer by using the codes given below the column -
Column
A
Column B
A)
BJT
1. Voltage controlled negative resistance
B)
MOSFET
2. High current gain
C)
Tunnel diode
3. Voltage regulation
D)
Zener diode
4. High input impedance
Codes
:
A
B
C
D
a)
1
4
2
3
b)
2
4
1
3
c)
2
3
1
4
d)
1
3
2
4
-
A
thyristor during forward blocking state is associated with.-
a)
large current , low voltage.
b)
low current , large voltage.
c)
medium current , large voltage
d)
low current, medium voltage.
-
In
controlled rectifiers, the nature of load current i.e. whether load
current is continuous or discontinuous -
a)
does not depend on type of load
and firing angle delay
b)
depends both on the type of load
and firing angle delay
c)
depends only on the type of load)
d)
depends only on the firing angle delay.
-
A single phase voltage
controller feeds power to a resistance of 10 W .
The source voltage is 200 V rms. For a firing angle of 900
, the rms value of thyristor current in amperes is -
a)
20
b)
15
c)
10
d)
5
-
In the performance of
single phase and three phase full converters the effect of source
inductance is to
a)
reduce the ripples in the load current -
b)
make discontinuous current as continuous
c)
reduce the output voltage
d)
increase the load voltage.
-
The cycloconverters (CCs)
require natural or forced commutation as under -
a)
natural commutation in both step up and step down CCs
b)
forced commutation in both step up and step down CCs
c)
forced commutation in step up CCs
d)
forced commutation in step down CCs
-
Power transistors are
more commonly of -
a)
silicon npn type.
b)
silicon pnp type.
c)
silicon nnp type.
d)
silicon npp type.
-
C
is a -
a)
Middle level language
b)
High level language
c)
Low level language
d)
None of above
-
What
will be output of program
main
( )
{
int i ;
print
f ("Enter value of i");
scant
("%d", & i);
if
( i = 5 )
print
f ("you entered 5");
else
print
f ("you entered %d", i ); }
if
user entered 100 then
a)
5
b)
100
c)
1005
d)
None
-
(7F)16
+ (BA)16 = (?)16-
a)
481
b)
139
c)–481
d)
–139
-
Two’s
complement of 3 bit nonzero linory number is some or original number is
all bits accepts-
a)
MSB are zeros
b)
LSB are zeros
c)
MSB are ones
d)
LSB are ones.
-
The
schematic circuits of RTL NOR gate is-
-
Transistors
with high frequency have -
a)
Thick
base
b)
Thin
base
c)
Some
other feature
d)
None of
the above
-
Telephone
traffic is specified in terms of -
a)
Average
waiting time
b)
Grade
of service
c)
Peak
waiting time
d)
Erlangs
-
In
a Hartley oscillator -
a)
Necessary phase relation is obtained by connecting grid and plate
electrodes to the opposite ends of the tuned circuit.
b)
The mutual inductance must have the appropriate polarity.
c)
Both grid circuit and plate tuned circuit offer inductive
reactance
d)
None of the above
-
The
condenser C is charged in a bootstrap sweep generator -
a)
Linearly
but the discharge is non linear
b)
Non
linearly but the discharge is linear
c)
Linearly
and the discharge is linear
d)
Non
linearly and the discharge is non linear
-
In
an audio amplifier audio signals become garbled and hence difficult to
understand when an ac input current is large enough to drive the output
to -
a)
saturation
only
b)
Cut off
only
c)
Either
saturation or cut off
d)
A value
off the load line
-
Five
1 bit registers are referred as -
a)
Flags
b)
Slags
c)
Tags
d)
None of the above
-
Next
binary number after 0,1, 10, 11 is -
a)
12
b)
101
c)
100
d)
110
-
Identify
coincidence logic circuit in the following –
a)
b)
c)
d)
-
The
output analog voltage Vo is given by -
-
If
an inverter is placed at the input to an SR flip flop, the result is -
a)
T flip flop
b)
D flip flop
c)
JK flip flop
d)
BCD decade counter
-
See
the Root locus diagram of a system and the following statements :-
1.
The open loop system is a second order system.
2.
The system is over damped for
3.
The system is absolutely stable for all value of R.
Which
of these statements are correct?
a)
1, 2, & 3
b)
1 and 3
c)
2 and 3
d)
1 and 2
-
For
the transfer function G(S)H(S) =
the
phase cross over frequency is -
a)
0.5 rad/sec
b)
0.707 rad/sec
c)
1.732 rad/sec
d)
2 rad/sec
-
If
the open loop transfer function of the system is
G(S) H(S) =
then
a closed loop pole will be located at S = -12 wher the value of K is -
a)
4355
b)
5760
c)
9600
d)
9862
-
Considering
the following open loop transfer function -
The correct sequence of these
systems in increasing order of the time taken for the unit step response
to settle is –
a)
1, 2, 3
b)
3, 1, 2
c)
2, 3, 1
d)
3, 2, 1.
-
Considering
unit feed back control system in the given figure, the ratio of time
constant of closed loop response to open loop response will be -
a)
1: 1
b)
2 :1
c)
3 : 2
d)
2 : 3
-
Angle
subtended by earth at geostationary communication satellite is -
a)
17.340
b)
51.40
c)
1200
d)
600
-
For
data transmission phase modulation is commonly used because -
a)
Phase can be varied from +1800 to -1800
b)
It is resistant to the effects of noise.
c)
Demodulation is very easy
d)
It gives highest data rates that can be transmitted over a given
channel.
-
Several
channels are interleaved and then transmitted together is known as –
a)Frequency division multiplex
b)
Time division multiplex
c)
A group
d)
A super group
-
Identify
the wrong statement-
The
radar cross section of a
target -
a)
Depends on the frequency used
b)
May be reduced by special coating of the target
c)
Depends on the aspect of a target, if this is non spherical
d)
Is equal to the actual cross-sectional area for small targets.
-
Considering
following parameters -
1.
Loss in the media) 2. Permeability of the media) 3. Frequency of the
wave 4. Velocity of the wave. Which of these parameters are responsible
for the change of phase of a propagating electromagnetic wave?
a)
1, 2, and 3
b)
2, 3 and 4
c)
1, 3 and 4
d)
1 and 4
-
In
super heterodyne receivers double spotting is caused by -
a)
poor front-end rejection
b)
misalignment of receiver
c)
detuning of one or more IF stages.
d)
non functioning of AGC
-
The
number of lines per field in the United States TV system is -
a)
262 1/2
b)
525
c)
30
d)
60
-
In
a TV receiver the color killer -
a)
cuts off the chroma stages
during monochrome receivers.
b)
ensures that no color is transmitted to monochrome receivers
c)
prevents color overloading
d)
makes sure that the color burst is not mistaken for sync pulses, by
cutting off reception during the back porch.
-
The
nominal capacitance of a coaxial RF cable is of 40 pF/m and the
characteristic impedance of 50W.
The inductance of the cable is-
a)
1mH/m
b)
10 mH/m
c)
0.1 mH/m
d)
0.01 mH/m
-
Transmission
of wave through Dominant mode is -
a)
distortion less transmission
b)
generates undesirable harmonic distortion
c)
having loss of power
d)
None of above.
-
Lower
the standing wave ratio (SWR) -
a)
Greater mismatch error
b)
Lower mismatch error
c)
No effect on matching
d)
Moderate mismatch error
-
In
klyrtron oscillator for getting wide range of oscillations resonators
should be -
a)
Critically coupled
b)
Under coupled
c)
Over coupled
d)
No coupling required
-
The
critical frequency is always -
a)
Lower than maximum usable frequency
b)
Equal to maximum usable frequency
c)
Higher than maximum usable frequency
d)
None of above
The
PIN diode based on -
a)
Nonlinear resistance
b)
Nonlinear reactance
c)
Negative resistance
d)
Controllable impedence
-
Which
antenna having circular polarization -
a)
Horn antenna
b)
Lens antenna
c)
Helical antenna
d)
Discone antenna
-
The
i/p S/N ratio of system is 50 and the o/p S/N ratio is 5 the noise
figure is -
a)
250
b)
55
c)
10
d)
45
-
In
the 8085 mP,
the RST 6 instruction transfers the program execution to the following
location -
a)
30 H
b)
24 H
c)
48 H
d)
60 H
-
In
instruction cycle first
operation is -
a)
Memory read
b)
Address read
c)
Opcode fetch
d)
Data
read
-
CMP
instruction comes under group -
a)
Data transfer
b)
Branching
operations
c)
Machine
control operation
d)
Logical
operations.
-
In
which logic operation does not effect any flags -
a)
ANA B
b)
ORA B
c)
XRI A2H
d)
CMA
-
What
happen when CALL instruction executed -
a)
Data retrieved from stock to register
b)
Data from register saved on the stock.
c) 16
bit address of instruction saved on stock
d)
16 bit address from stock retrieved)
-
The
mark status of mark able interrupts is defined according to content of -
a)
stack pointer.
b)
HL register .
c)
Program counter
d)
Accumulator
-
The
decoder is a logic ckt that
-
a)
Amplifies the current or power at i/p.
b)
Identifies each combination of the signals present at i/p
c)
Provides appropriate code as o/p for each i/p signal
d)
Both b & c)
-
The
young man was quickly promoted when his employers how --------------- he
was -
a)
indigent
b)
indifferent
c)
assiduous
d)
cursory.
-
As
letter is alphabet so zodiac is -
a)
almanac
b)
beacon
c)
sign
d)
signal.
-
What
is the correct meaning of prudish.?
a)
careful
b)
fast
c)
God
d)
brave
-
Pick
out the odd matching with reference to number -
a)
woman – women.
b)
hair –
hairs
c)
child –
children.
d)
foot –
feet.
-
Choose
the phrase that is most nearly similiar in meaning to the word given
below-
Abut
is
a)
Stimulate
b)
Grasp
c)
Oppose
d)
Adjoin
-
The
highest mountain peak in Indian Territory is -
a)
Mount Everest
b)
Kanchenjunga
c)
Nanda Devi
d)
Mount Kailash
-
German
silver is an alloy comprising -
a)
Copper, Nickel and Zinc
b)
Silver, copper and Zinc
c)
Silver Nickel and Zinc
d)
Nickel, Zinc and Lead
-
Mughal
Emperor Bahadur Shah Zafar’s mausoleum
is in -
a)
Delhi
b)
Lahore
c)
Yangon
d)
Agra
-
On
which date the World Trade Centre in New York and Pentagon in Washington
d)C was attacked by terrorist -
a)
12 September 2001
b)
11 September 2001
c)
11 July 2001
d)
20 December 2001
-
India
defeats South Africa in the finals of the inaugural champions challenge
Hockey Tournament in Kualalumpur by -
a)
4-2
b)
2-0
c)
3-2
d)
2-1
-
Which
planets in the solar system are known as ‘Inferior Planets’ -
a)
Earth and Mars
b)
Earth and Mercury
c)
Mars and Mercury
d)
Mercury and Venus.
-
The
largest Stupa in Southern India is at -
a)
Nellore
b)
Amravati
c)
Tanjore
d)
Kozhikode
-
The
new chairman and Managing Director of Industrial Finance Corporaton of
India (IFCI) is -
a)
Mr. Vishwanath Prasad Singh
b)
Mr. Jitendra Patil
c)
Mr. Ragh
d)
Mr. Shubhash chand Jain
-
Which
one is the latest among rock-cut temples?
a)
Ajanta
b)
Ellora
c)
Elephanta
d)
All originated in the same period)
-
Number
of organisations government ban in
Jammu and Kashmir and the North East under the new ordinance
‘POTO’ is -
a)
20
b)
21
c)
22
d)
23
-
In
bed of which river does Badrinath shrine stand?
a)
Ganga
b)
Mandakini
c)
Alakananda
d)
Bhagirathi
-
The
nerve endings for the sense of sight are located in the part of the eye
called the -
a)
Cornea
b)
Sclera
c)
Iris
d)
Retina
-
Fundamental
duties were introduced in the constitution by the -
a)
40th Amendment
b)
42nd Amendment
c)
43rd Amendment
d)
44th Amendment
-
The
Khalsa Panth was founded by -
a)
Guru Hargovind
b)
Guru Nanak Dev
c)
Guru Tegh Bahadur
d)
Guru Govind singh
-
Number
of countries involved in international fleet review hosted by India is -
a)
27
b)
28
c)
29
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