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 Engineer - United Electrical Industries Ltd' And exam conducted in the year 2023. And Question paper code was '231/2023'. 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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Which of the following is not a technique for designing FIR filters?
(A) Windows method
(B) Frequency sampling method
(C) Optimal design based on Chebyshev approximation
(D) Bilinear Transformation design
A band limited message signal x(¢) is multiplied by a high frequency sinusoidal carrier c(t)
will result —————— types of modulation.
(A) Double Side Band Suppressed Carrier Modulation
(B) Standard Amplitude Modulation
(C) Single Side Band Suppressed Carrier Modulation
(1) Vestigal Side Band Modulation
An FM broadcast station uses a message signal bandwidth of 15 KHz and a frequency
deviation of 75 KHz. The transmission bandwidth as per the Carson’s rule is :
(A) 200 KHz (B) 180 KHz
(C) 220 KHz (0) 210 KHz
The minimum bandwidth needed for transmitting 4 KHz signal using PCM with 1024
quantising levels is:
(A) 8 KHz (B) 16 KHz
(© 32KHz (D) 40 KHz
An image uses 1024 x 1024 pixel elements. Each of the pixel can take any of the eight
distinguishable intensity levels. The maximum entropy of the above mentioned image
will be :
(A) 3x 2" bits (B) 3x 2” bits
) 2x 2° bits (D) 2x 2™bits
For a (7, 4) cyclic code with a generator polynomial x*+x*+1. Find the code word for the
data 1010:
(A) 1001011 (B) 0001101
(6) 1110010 (D) 1101000
231/2023 18 A