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 'Assistant Professor Electronics and Communication Engineering' And exam conducted in the year 2023. And Question paper code was '051/2023'. 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 fundamental period of the given sinusoidal signal x[n] = 10 cos (=) (3) is
A) 5 samples B) 30 samples C) 10 samples D) 31 samples
The Fourier representation of x(t) = et cos (2zt) u (t)
A) DTFS B) DTFT C) FS D) FT
The impulse response of a LTI system is h(n) = (1/2)"u[n]. The output of this system
is when the input given is x[n] = 2(-1/2)"u[n].
A) yn] = (1/2)"u[n] + (-1/2)"u[n] B) y[n] = (-1/2)"u[n] + (—1/2)"u[n]
C) y(n] = 2(1/2)"u[n] + (—1/2)"u[n] D) y[n] = (1/2)"u[n] + 2(-1/2)"u[n]
The forced response of the given system described by y[n] + 3y[n - 1] = x[n] + x[n — 1] is
A) -6(-3)"u[n] B) -3(-6)"u[n]
C) 4/7(-3)"u[n] D) 4/7(-3)"u[n] + 3/7(1/2)"u[n]
pulse plays a key role in digital communication.
A) Saw tooth B) Triangle
C) Rectangle D) Square
The approach used in the design of analog and digital filters
A) Direct digital B) Analog
C) Analog to digital D) All the above
For the given transfer function of band pass filter 0.1s/(s? + 0.1s + 1), the mid-band
frequency and bandwidth are
A) 1&1 8) 0.1& 1 ©) 1& 0.1 0) 0.1 & 0.1
1. Unfiltered speech signal is harsh.
2. Filtered speech signal is soft.
A) 2 is contrast to 1 B) 2 is correlation with 1
C) 2is same as 1 D) None of the above
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