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 'Workshop Instructor/ Demonstrator/ Instructor Grade II in Electronics and Communication' And exam conducted in the year 2023. And Question paper code was '058/2023'. 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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For good differentiator
A) The time constant RC of the circuit should be much smaller than the time
period of the input wave
B) The value of X, should be 10 or more times larger than R at the operating
frequency
C) Both A) and B)
D) None of these
If a signal passes through an integrator, the amplitude of noise signal
A) Enhanced B) Stabilized
C) Reduced D) None of these
A Hartley oscillator is commonly used in
A) Radio receivers B) Radio transmitters
C) TV receivers D) None of the above
Which of the following is a condition for oscillation ?
A) A phase shift around the feedback loop of 180 degree
B) A gain around the feedback loop of one-third
C) A phase shift around the feedback loop of zero degree
D) A gain around the feedback loop of less than 1
is a square wave generator.
A) Monostable multivibrator B) Astable multivibrator
C) Bistable multivibrator D) None of the above
Most suitable circuit to generate 1 KHz signal is
A) Hartley Oscillator B) Colpitts Oscillator
C) RC Phase Shift Oscillator D) Wien Bridge Oscillator
Indicate the false statement. Modulation is used to
A) reduce the bandwidth used
B) separate differing transmissions
C) ensure that intelligence may be transmitted over long distance
D) allow the use of practical antennas
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