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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051/23
In a DSSS communication system, the processing gain in dB for the given
(SNR)p = 20 and PI/PS = 100 is
A) 20dB B) 10dB C) 30dB D) 1000dB
The differential entropy of a random variable X when uniformly distributed in
(0, a] is
A) 1 B) Log O
C) Loga D) None of the above
The difference between the true value and the measured value of the quantity
A) Static error B) Static value
C) Static correction D) None of the above
A Wheatstone bridge is constructed with two strain gauge and two resistors. One
strain gauge is active and other one is dummy. These two are in the opposite arms
of a Wheatstone bridge. The other two arms are formed with resistors of equal
resistance of 120 ohms each at 300 K. The frequency bandwidth is 100,000 Hz.
When a pressure of 7000 kN/m? is applied, and the output voltage is 0.12 mV. Find
signal to noise ratio generated by the resistors.
A) 269 B) 296 0) 259 D) 256
Two resistors R, = 29.5 ohms and R, = 69 ohms are connected in series. Then the
total resistance is
A) 39.5 B) 2035.5 C) 2.338 D) 98.5
In Photoconductive transducer
A) Change in conductivity appears as change in resistance
B) Change in conductivity appears as change in inductance
D
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C) Change in conductivity appears as change in impedance
) None of the above
Time required by a measurement system to begin to respond to a change in the
measurand is
A) Dwell time B) Holding time
C) Serving time D) Dead time