Kerala PSC Previous Years Question Paper & Answer
Page:5
Below are the scanned copy of Kerala Public Service Commission (KPSC) Question Paper with answer keys of Exam Name 'Lecturer in Electronics and Instrumentation (Polytechnics)' And exam conducted in the year 2023. And Question paper code was '121/2023/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.
what will be the current carried by the 15 ohm resistor?
A:-2A
B:-3 A
4.5൧.
D:-5A
Correct Answer:- Option-A
Question23:-What type of generator will be selected for producing a dc power
supply that will have nearly constant voltage from no load to full load?
A:-Shunt generator
B:-Series generator
C:-Differential compound generator
D:-Cumulative compound generator
Correct Answer:- Option-D
Question24:-A three phase balanced load draws 0.5 A line current from 400 V
supply at a power factor of 0.5. What is the energy consumed by this load when it
is connected to the supply for 10 hours?
A:-1.0 kWh
B:-1.732 kWh
C:-1000 kWh
D:-1732 kWh
Correct Answer:- Option-B
Question25:-A thyrite type lighting arrester is used to
A:-absorb the surge voltage
B:-block the surge voltage
C:-bypass surge to the ground
D:-return surge back to the source
Correct Answer:- Option-C
Question26:-LED is made up of
A:-In P
B:-GaAs
C:-Cd Te
D:-Si
Correct Answer:- Option-B
Question27:-The ripple factor of full wave bridge rectifier is
A:-0.632
B:-0.821
C:-0.48