Kerala PSC Previous Years Question Paper & Answer
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Below are the scanned copy of Kerala Public Service Commission (KPSC) Question Paper with answer keys of Exam Name 'Engineering Assistant ( Electronics)/Overseer Gr-I (Electronics) - PWD (Electronics Wing) ' And exam conducted in the year 2021. And Question paper code was '137/2021'. Medium of question paper was in Malayalam or English . Booklet Alphacode was 'A'. Answer keys are given at the bottom, but we suggest you to try answering the questions yourself and compare the key along wih to check your performance. Because we would like you to do and practice by yourself.
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The common-mode voltage gain of an Op-amp is പ
(A) equal to differential voltage gain
(B) smaller than differential voltage gain
(C) greater than differential voltage gain
(D) none of the above
What is the feedback factor of voltage follower circuit?
(A) zero (B) unity
(C) between zero and one (D) infinity
The internal circuitry of the 555 timer consists of
switch, an output buffer amplifier, and a voltage divider.
, an R-S flip-flop, a transistor
(A) a peak detector (B) a comparator
(C) a voltage amplifier (D) two comparators
The 7912 regulator IC provides
(A) 5v (B) -5v
(C) 12% (0) -12v
The fastest A/D converter is __ ADC
(A) single slope ramp comparator (B) dual slope integrator
(C) successive approximation (D) counter type
What is the disadvantage of binary weighted type DAC?
(A) slow switching (B) requires wide range of resistors
(C) high operationg frequency (D) high power consumption
The phase velocity of a waveguide at cutoff frequency is
(A) Zero (B) Finite
(C) Infinite (D) One
For a short circuited loss-less line having length less than a quarter wavelength will
have input impedance
(A) Purely Inductive (B) Purely resistive
(C) Resonative (D) Purely capacitive
The main reason for occurring of standing waves is due to
(A) Dispersion (8) Impedance mismatch
(C) Reflection (D) Transmission mode
ಸ ളള ति