UGC Electronic Questions Answers Practice Test

UGC NET Electronic Science MCQ Questions Answers for competitive exams: This mock test having 25 question each, with four choices. On each click on answers system will tell you where the answers is correct or incorrect. You can view this UGC NET Electronic Science test question details at the end of the quiz.

This National Eligibility Test (NET) Electronic Science questions answers are applicable for any kind of entrance exam or job related exam especially for Lecturer and PHD examination. You can practice as much as you can to gather knowledge of how to answers UGC NET Electronic critical type papers in short time and this can be a big factor for cracking PHD level exam.

UGC Electronic Science

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Question 1
If differential amplifier has a differential gain of 20,000. CMRR = 80 dB, then common mode gain is
A
2
B
1
C
1/2
D
0
Question 2
For proper operation of integrators, its RC time constant and period T of the wave should be such that
A
T >> RC
B
T << RC
C
T = RC
D
T = 2 ln RC
Question 3
The phase shift introduced by feed network or amplifier in Wein bridge oscillator is
A
B
90°
C
180°
D
270°
Question 4
The tie-set schedule gives relation between
A
branch currents and link currents
B
branch voltages and link currents
C
branch currents and link voltages
D
branch voltages and link voltages
Question 5
Number of flip-flops needed to construct a shift register capable of storing decimal numbers upto 32 are
A
6
B
4
C
5
D
2
Question 6
The control word of ‘0B5H’ of 8253 indicates that the following counter is selected
A
Counter 0
B
Counter 1
C
Counter 2
D
Counter 3
Question 7
In 8051, Pin 30 (ALE /PROG), if this bit is set as logic zero (‘0’), it signifies
A
Address is latched
B
For enabling internal ROM of programming
C
For disabling internal ROM programming
D
Both (A) and (C)
Question 8
The depth of penetration of a wave in a lossy dielectric increases with increasing
A
Conductivity
B
Permeability
C
Wavelength
D
Permittivity
Question 9
The expression a = 7/22 * (3.14 + 2) * 3/5 evaluates to
A
8.28
B
6.28
C
3.14
D
0
Question 10
Which escape sequence takes the cursor to the beginning of the current line ?
A
\n
B
\r
C
\a
D
\t
Question 11
In the spectrum of frequency modulated wave
A
The carrier frequency disappears when the modulation index is large.
B
The amplitude of any side band depends on the modulation index.
C
The total number of side bands depends on the modulation index.
D
The carrier frequency cannot disappear.
Question 12
Dispersion shifted wavelength in optical fiber is
A
800 nm
B
1300 nm
C
1550 nm
D
400 nm
Question 13
The problem, with PI controller is its response to transients, is
A
very fast
B
having a dead zone
C
non-linear
D
sluggish
Question 14
Indicate which one of the following is not an advantage of FM over AM :
A
Better noise immunity is provided
B
Lower bandwidth is required
C
The transmitted power is more useful
D
Less modulating power is required
Question 15
Which is the most linear temperature transducer ?
A
Thermocouple
B
RTD
C
IC-sensor
D
Thermistor
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There are 15 questions to complete.



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