NESCOM Test AM Electronics

Following are some MCQs from the test of Assistant Manager AM Electronics test that is held on 14 May, 2019 by NESCOM. You can practice and learn most important MCQs for electrical tests preparation from Here. Download link of the pdf file is at the end of this post.

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NESCOM Test AM Electronics MCQs

1) Which level of system implementation includes the specific function oriented registers, counters & multiplexers?

(A) Module level (B) Logical level (C )Physical level (d) All of the above

Ans: A

2) In digital ICs, Schottky transistors are preferred over normal transistors because of their (A) Lower Propagation delay.

(B) Higher Propagation delay. (C) Lower Power dissipation. (D) Higher Power dissipation

Ans: A

3) The UJT may be used as ………………

(A) An amplifier (B) A Sawtooth generator (C) A rectifier (D) None of the above
Ans: B

4) Often a common-collector will be the last stage before the load; the main function(s) of this stage is to……..
(A) provide voltage gain
(B) provide phase inversion
(C) provide a high-frequency path to improve the frequency response
(D) buffer the voltage amplifiers from the low-resistance load and provide impedance matching for maximum power transfer
Ans: D

5) Which one is true
(A) Series resonant circuit has high impedance
(B) Parallel resonant circuit has low impedance
(C) At frequency greater than resonance frequency, circuit behaves like inductive circuit
(D) Frequency at which XL=XC
Ans: C

6) JFET is ;
(A) voltage controlled current source
(B) voltage controlled voltage source
(C) current controlled current source
(D) current controlled voltage source
Ans: A

7) If gain is +6db and input power is 1mW for an amplifier; what is output power
(A) 1 mW
(B) 0 mW
(C) 4 mW
(D) None of these
Ans: C
Explanation: Gain in dB=10 log(Po/Pi)
So, 6=10 log(Po/1mW)
Po= 3.9mW or 4mW approx.

8) Which motor is used in vacuum cleaner
(A) Series
(B) Shunt
(C) Cumulative Compound
(D) Differential Compound
Ans: A (Universal/ DC Series Motor is used)

NESCOM Test AM Electronics

NESCOM Test AM Electronics MCQs

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