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.
A:-Ammonium chloride
B:-Nitric acid
C:-Manganese dioxide
D:-Sulphuric acid
Correct Answer:-Question Cancelled
Question27:-The specific gravity of the electrolyte in a lead acid battery can be
measured using
A:-Ammeter
B:-Barometer
C:-Hydrometer
D:-Voltmeter
Correct Answer:- Option-C
Question28:-Conventionally the energy stored in a battery is measured in
A:-Ampere - Volt
B:-Ampere - Hour
C:-Ampere/Hour
D:-Ampere/Volt
Correct Answer:- Option-B
Question29:-In a full wave rectifier if the input signal frequency is 50 Hz, find the
output signal frequency?
A:-25 Hz
B:-50 Hz
C:-100 Hz
D:-150 Hz
Correct Answer:- Option-C
Question30:-Based on the input cycles utilized, the rectifiers can be classified as
A:-Full wave rectifier
B:-Half wave rectifier
C:-Positive rectifier
D:-Both (1) and (2)
Correct Answer:- Option-D
Question31:-The following symbol represents in an electrical system.
A:-Rectifier
B:-Inverter
C:-Chopper