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 'Instrument Mechanic' And exam conducted in the year 2023. And Question paper code was '158/2023/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.
Question27:-A 1 mA moving coil ammeter has a resistance of 27 Q. Calculate the
value of shunt resistance to be connected to extend its range to 10 mA ammeter?
A:-2.7 ohm
B:-3 ohm
C:-10 ohm
D:-270 ohm
Correct Answer:- Option-B
Question28:-Why the pointer of an insulation resistance tester is not coming back
to initial position after the measurement is made?
A:-It is under damped
B:-It is over damped
(:- does not have a controlling torque
D:-It does not have a deflecting torque
Correct Answer:- Option-C
Question29:-Which instrument has a uniform scale?
A:-Moving iron voltmeter
B:-Dynamometer type voltmeter
C:-Dynamometer type Ammeter
D:-Dynamometer type wattmeter
Correct Answer:- Option-D
Question30:-In the scale of a series type ohmmeter, on which zero reading is
marked?
A:-On right side of scale
B:-On left side of scale
C:-At centre of scale
D:-It has no zero reading marking
Correct Answer:- Option-A
Question31:-Semiconductors have properties :
1. Resistivity less than insulator and more than a conductor.
Il. Positive temperature co-efficient of resistance.
||. Conduction property can be changed by adding impurity.
A:-I| and Il are correct
B:-All three are correct
C:-Il and Ill are correct
D:-l and III are correct
Correct Answer:- Option-D
Question32:-Which statement/s is/are true for Transistors?
1. Emitter supplies charge carriers.