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.
D:-UPS
Correct Answer:-Question Cancelled
Question32:-Choose the disadvantage of SMPS:
A:-Low efficiency
B:-Noise exist due to high frequency switching
C:-High power dissipation
D:-None of the above
Correct Answer:- Option-B
Question33:-The regulated DC power supply consists of
A:-Rectifier
B:-Filter
C:-Voltage regulator
D:-All the above
Correct Answer:- Option-D
Question34:-The instruments used for critical load during temporary power failure
occur is
A:-UPS
B:-SMPS
C:-MPS
D:-RCCP
Correct Answer:- Option-A
Question35:-What is used to neutralize a spilled electrolyte from a lead acid
battery?
A:-Boric acid
B:-Water
C:-Sulphuric acid
D:-Baking soda
Correct Answer:- Option-D
Question36:-The self inductance of two coils is 16 mH and 4 mH respectively. If the
coefficient of coupling is 0.7, the mutual inductance between the coils is,
A:-8 MH
B:-5.6 mH
C:-4.2 mH
D:-4 mH
Correct Answer:- Option-B
Question37:-The voltage and current in ac circuit is represented by v = Vm
Sin(wt+30°) and i = 1, Sin(wt-45°).