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 'JUNIOR INSTRUCTOR ELECTRONIC MECHANIC INDUSTRIAL TRAINING' And exam conducted in the year 2018. And Question paper code was '079/2018'. 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 a Class C Amplifier
(ಗ) Efficiency and distortion both are maximum.
(B) Efficiency and distortion both are minimum.
(C) Efficiency maximum but distortion minimum.
(D) Efficiency minimum but distortion maximum.
The Cut in Voltage of a Germanium junction diode is
۸ 7 (B) 03V
© 97% (೧) 1%
Which among the following does not belong to the category of LC oscillator ?
(ಗಿ) Hartley oscillator (B) Colpitt’s oscillator
(C) Wein bridge oscillator (D) Clapp oscillator
Why is the practical value of | AB | considered to be slightly greater than one in oscillators ?
(¢) To compensate for non-linearities existing in the circuit.
(B) To compensate for phase shifting of two relevant signals upto 180°.
(C) To compensate for the change in feedback voltage.
(D) To compensate for noise voltage.
The RC network of a Wien Bridge Oscillator consists of R1=R2=10 KQ and C1=C2=1000nF.
The frequency of oscillation is :
(¢) 159Hz (B) 159.12 Hz
€) 180Hz (D) 15915Hz
Which of the following oscillator will give most stable output oscillation frequency ?
(മ) Colpitts oscillator (B) Hartley oscillator
(೮) Crystal oscillator (D) RC phase shift oscillator
‘Which Number System has a base of 16 ?
(ಗಿ) Hexadecimal (B) Octal
(0 Decimal (D) Binary
Which of these sets of Logic Gates are designated as Universal Gates ?
(A) NOR,NAND, XNOR رمق NOR, NAND, AND
(C) OR,NOT, AND (D) NOR,NAND
7 079/2018
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