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 'Draftsman Grade II (Electrical), Skilled Assistant Grade II, Electrician, Lineman in Kerala State Housing Board, PWD (Electrical Wing) etc' And exam conducted in the year 2023. And Question paper code was '113/2023'. 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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113/23
What is the purpose of series resistor connected with holding coil in a D.C. four point
starter ?
A) Limit the current in holding coil
B) Increase the current in holding coil
C) Increase the voltage in holding coil
D) Decrease the voltage in holding coil
Why the direction of rotation is changed only by changing the armature current
direction in a D.C. compound motor ?
A) Maintain rated speed B) Maintain motor characteristics
C) Avoid armature reaction effect D) Prevent motor from over loading
Which speed control methods offers below normal speed in DC shunt motor ?
A) Field control method B) Voltage control method
C) Armature control method D) Ward Leonard system of speed control
Why the D.C. series motor field winding is wound with thick wire ?
A) To regulate field voltage B) To carry the load current
C) To keep maximum inductance D) To reduce the armature reaction
Which type of instrument is used to test the armature winding ?
A) Megger B) Growler C) Multimeter D) Ohmmeter
To convert galvanometer into ammeter
A) Avery high resistance is connected in series or in parallel
B)
C) A low resistance is connected in parallel
D)
A high resistance is connected in series
A low resistance is connected in series
Which material is used for transformer bushings ?
A) Porcelain B) Plastic C) Bakelite D) Pvc
The starting torque of a three phase induction motor is supply voltage.
A) Inversely proportional to B) Directly proportional to
C) Directly proportional to square of D) Independent of
In all induction instruments, deflection torque is produced due to the reaction
between
A) Voltage and current B) Flux and eddy currents
C) Two eddy currents D) Two alternating fluxes