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 ' Electrician- cum- Mechanic' And exam conducted in the year 2023. And Question paper code was '118/2023/OL'. Medium of question paper was in Malayalam or English . Booklet Alphacode was ''. 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.
D:-None of the above
Correct Answer:- Option-C
Question40:-What is the cause for hunting effect in alternators?
A:-Running with fluctuation of speed
B:-Due to overload
C:-Due to continuous fluctuation in load
D:-Running without load
Correct Answer:- Option-C
Question41:-Which is high efficiency converter?
A:-Mercury arc rectifier
B:-Motor generator set
C:-Rotary converter
D:-SCR converter
Correct Answer:- Option-D
Question42:-Why the synchronous motor fails to run at synchronous speed?
A:-Defective pony motor
B:-Short in damper winding
C:-Insufficient excitation
D:-Open in damper winding
Correct Answer:- Option-C
Question43:-What is the characteristic of an ideal voltage amplifier with respect to
the input and output impedence?
A:-Low input and high output impedence
B:-High input and high output impedence
C:-Low input and low output impedence
D:-High input and low output impedence
Correct Answer:- Option-D
Question44:-The current flowing through each diode of a bridge rectifier is equal to
A:-Half the load current
B:-twice the load current
C:-Same as the load current
D:-Four times the load current
Correct Answer:- Option-C
Question45:-Which electronic circuit generates A.C. signal without input?
A:-Filter circuit
B:-Oscillator circuit