Kerala PSC Previous Years Question Paper & Answer
Page:8
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.
The power factor angle of the circuit is
A:-15°
B:-45°
C:-30°
D:-75°
Correct Answer:- Option-D
Question38:-What is the true condition for maximum power transform from source
to load as per maximum power transform theorem?
A:-Source resistance is equal to load resistance
B:-Source resistance is negligible
C:-Load resistance if negligible
D:-Load resistance is infinity
Correct Answer:- Option-A
Question39:-Power factor of a parallel resonant circuit is
A:-Zero
B:-Infinity
C:-Unity
D:--1
Correct Answer:- Option-C
Question40:-Which of the following instruments measure RMS value of unknown
current?
A:-PMMC
B:-Electrodynamic only
C:-Moving iron only
D:-Both (2) and (3)
Correct Answer:- Option-D
Question41:-The energy meter installed near the main switch in residences and
other locations is,
A:-An indicating on deflecting type
B:-An absolute instrument
C:-Recording type instrument
D:-An integrating type instrument
Correct Answer:- Option-D
Question42:-The extension range of an ammeter and voltmeter can be made
represented by,
A:-Using a multiplier and shunt
B:-Using shunt and multiplier