Kerala PSC Previous Years Question Paper & Answer

Question Code : A


Below are the scanned copy of Kerala Public Service Commission (KPSC) Question Paper with answer keys of Exam Name 'ELECTRICIAN KSFDC LTD' And exam conducted in the year 2015. And Question paper code was '135/2015'. 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.

page: 6 out of 12
Excerpt of Question Code: 135/2015

48. The minimum number of diodes needed for a bridge rectifier is :

(8) 0೧6
(0 four

೧) ೪೫೦
(D) eight

44. The insulating material belongs to class B insulation is :

(ക) Mica
(C) ணை
45, The unit of self induction is :

(ക) Weber
(0 സാ

46. 3 phase star connection :

(8) ILis less than IPh
(C) IL more than IPh

` 47. Hysteresis is the phenomenon of-

(4) Lagging B behind H
(©) Setting up constant flux

(8) Cotton
(D) Leatheroid paper

(B) Henry
(D) Coulomb

© IL=v3IPh
®) IL=IPh
in a magnetic circuit.

(B) Lagging H behind B
(D) None of these

48. The maximum current that can pass through a 2Q 2 watts resister will be :

0) 2Amps
D) 4 Amps

49. The insulation resistance of an electrical machine working at medium voltage should not be

(^) 1Amps

(C) 3 Amps
less than :

മ) 10000

(0) 100000 2

(B) 10000 2
(D) 1000000 ©

50. Distribution transformer ലട designed to have maximum efficiency nearly :

(5) At any desired load
(€) At 50 % of full load

51. Toa condenser AC supply is given :
(A) The current will not flow

(C) The current flows continuously

(B) At full load
(D) At noload

(B) There is no continuous flow of current

(D) None of the above

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