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 'Technician GrII - Electrician - Kerala Co-operative Milk Marketing Federation Ltd' And exam conducted in the year 2020. And Question paper code was '030/2020'. 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.
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030/2020
Which force is required to move the pointer from zero position in an indicating
instrument ?
A) Controlling force
B) Deflecting force
C) Air friction damping
D) Eddy current damping
Which source of measuring error is caused by the effect of magnetic fields ?
A) Device error
B) Human error
C) Influence error
D) Switching error
Which type of instrument is used with air friction damping ?
A) Moving coil instrument
B) Moving iron instrument
C) Induction type instrument
D) Dynamo meter type instrument
Why damping force is required in a moving coil instrument ?
A) Makes the needle movement faster
B) Helps the deflecting force to act fast
C) Brings the needle to its zero position
D) Arrests the needle to its zero position
What is the typical efficiency range of a transformer ?
A) 85 to 90%
B) 80 to 85%
©) 92 to 99%
D) 90 to 95%
What is the relationship between primary and secondary currents of a transformer ?
A) Comparison of primary voltage and secondary voltage
B) Comparison of the primary and secondary ampere turns
C) Comparison of the primary supply frequency and secondary supply frequency
D) Comparison of input power and output power
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