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 'JUNIOR INSTRUCTOR MECHANICAL CONSUMER ELECTRONICS INDUSTRIAL TRAINING DEPARTMENT' And exam conducted in the year 2014. And Question paper code was '088/2014'. 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.
68.
69.
70,
71
72.
73.
74.
75.
76.
UJT relaxation oscillator circuit produces a saw tooth wave form :
(4) At Bl terminal (B) At B2 terminal
(0) Across the capacitor (D) None of these
Voltage regulation of commereial power supplies have :
Ay 2% 18 10%
(೮) 15% (1) Within 1%
TRIAC is :
(ಯ A four terminal device (B) Like a bidirectional SCR.
(C) Have 3 layers (1)) Have 2 junctions
Multivibrator having one quasi-stable state :
(A) Astable Multivibrator © Schmitt trigger =
(C) Monostable multivibrator (10) Bistable multivibrator
The relation between frequency of an AC signal (f) and Time period (T) is :
1 01
@A 15 2 17 B /- T
o =7 o f=2r
Function of NOT gate :
{A) Universal gate (B) Invert input signal
(C) Block a signal (D) None of the above
The value of degenerative feedback fraction is always :
(A) Lessthan1 (B) Equaltol
(C) More than 1 (D) None of the above
For a transistor amplifier, when we give 10 V as input voltage, it draws 2 mA current. What
is its input impedance?
(५) 5 1 | (2) 20 kQ
ര 0) യു 108೧
Intrinsic stand off ratio (5 ) of a UJT :
@ उस ര ത്മ,
RB,
മ RB, + RB,
رق هق م க்க
५ ऋ; ற وا
11 88/2014
[P.T.O.]
