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 'Lineman-PWD (Electrical Wing) ' And exam conducted in the year 2021. And Question paper code was '131/2021'. 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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Speed of a DC motor
(A) Directly proportional to flux
(B) Directly proportional of back emf
(C) Inversely proportional to supply voltage
(D) Can't change by increasing supply voltage
Shaft torque in DC motor is
(A) less than armature torque
(B) greater than armature torque
(C) equal to armature torque
(D) square of armature torque
A DC shunt motor is connected with 200V DC supply. It takes a line current of 18A.
What will be the Armature current if shunt field resistance is 100 7
(A) 36% (8) 2A
(൭ 204. (0) 16%
The motor used in mixer grinder
(A) Stepper motor (B) Universal motor
(C) Capacitor start motor (D) Compound motor
An Induction motor with 6 poles rotating at a speed of 950 rpm using 50 Hz supply.
The percentage of slip is
(A) 5% (B) 3%
(C) 15% (D) 0.5%
D.O.L. starter is used to start the motor up to
(A) 25 HP (B) 5 HP
(C) 7.5 HP (D) 100 HP
In slip ring induction motor starter 3 external variable resistances are
(A) Connected in Series with stator circuit
(B) Connected in Parallel with stator circuit
(C) Connected in Star with rotor circuit
(D) Connected in Delta with rotor circuit
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