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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In fast fading
(A) Coherence time is greater than symbol period
(B) Coherence time is lesser than symbol period
(C) Coherence time is equal to symbol period
(D) Coherence time is independent of symbol period
In FDM, frequency band overlapping is avoided using
(A) Guard band
(B) Framing band
(C) Synchronizing pulses
(D) None of the above
In a cell, which is the radio channel used for transmission of call setup, call request
and call initiation _ 7
(A) Forward channel
(B) Control channel
(C) Uplink channel
(D) Reverse channel
The handoff operation involves
(A) Identifying the MSC and the call will be connected to the MSC
(B) Identifies the voice channel to instruct the mobile telephone to ring
(C) Identifying a new base station and reallocating the channels with the new base
station.
(D) Instructs the base station to move the call to an unused voice channel within the
cell
Code Division multiple access scheme is based on
(A) QPSK (B) BPSK
(C) Spread spectrum technology (D) BFSK
Delay spread is due to
(A) Multipath reflection (B) Frequency dispersion
(C) Fresnel zone (D) Doppler effect
Which of the following is true ina DECT system?
(A) The range is limited to about 300m from base station
(B) Can handle handover, but it is not designed to work at high speed
(C) Works at a frequency range of 1880-1990 MHz
(D) All of the above
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