Kerala PSC Previous Years Question Paper & Answer
Page:9
Below are the scanned copy of Kerala Public Service Commission (KPSC) Question Paper with answer keys of Exam Name 'LABORATORY TECHNICAL ASSISTANT MRRTV VHSE' And exam conducted in the year 2014. And Question paper code was '218/2014'. 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.
56.
57.
61.
BF245B has a maximum drain source voltage أن
(ക) 18% (8) 34%
(0) 30% (D) 36V
The unit decibel is used to measure
(A) power (8) விடும்
(C) power level (0) ۵۷ء
With feedback. the closed loop gain of an amplifier signifies
(வ) the gain when its output terminals are closed
(8) the gain when no feedback is applied
)© when the feedback factor exceeds unity
(D) the gain when the feedback is applicd
The gain bandwidth product of an amplifier is 4 MHz. lts closed loop gain is 40. The new
Bandwidth is
(A) 160 MHz (B) 100 KHz
ര 10MHz (D) 20KHz
To produce sustained oscillations by an clectronic oscillator
(ക) feedback factor should be unity
(8) feedback should be negative
(C) phase shift should be 0°
(D) णा (A) and (C)
The purpose of using de-emphasis circuit in FM receiver is
(A) making demodulation easy
(B) reducing high frequency noise
(C) increasing the amplitude of higher modulating frequencies
(D) reducing the amplitude of high frequencies in the audio signal
9 218/2014
