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 'Junior Instructor (Electronic Mechanic)' And exam conducted in the year 2023. And Question paper code was '081/2023/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.
C:-Using series capacitor and series inductor
D:-Using series inductor and series capacitor
Correct Answer:- Option-B
Question43:-In a moving iron instrument which is spring controlled, a current of 5A
produces a deflection of 60°. What will be the deflection when a current of 2A is
flowing through the coil of the instrument?
A:-9.6°
B:-4°
C:-14°
D:-10°
Correct Answer:- Option-A
Question44:-According to Faraday's law of electromagnetic induction,
A:-Magnetic field is produced by time varying electric flux
B:-Magnetic field is associated with a moving charge
C:-Electric field is produced by time varying magnetic flux
D:-Electric field is produced by magnetic flux linked
Correct Answer:- Option-C
Question45:-Which of the following is not the unit of energy?
A:-kWh
B:-Joules/second
C:-Watt hour
D:-Joules
Correct Answer:- Option-B
Question46:-The rise time 't' of a signal applied to CRO and bandwidth 'B' of the
CRO are related as
A:-t x B = 0.35
B:t x B=1
C:-t/B = 0.35
D:-+t/B =1
Correct Answer:- Option-A
Question47:-An oscilloscope is used to measure the phase difference or the
frequency relationship between two unknown signals, it is used in the
A:-CHOP mode
B:-ALT mode
C:-Trigger mode
D:-X-Y mode
Correct Answer:- Option-D