Kerala PSC Previous Years Question Paper & Answer
Page:7
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.
Question33:-Calculate the Reynold's number of a fluid of viscosity 0.5 Pascal-
second and density of 500Kg/ms flowing in a horizontal circular tube of diameter 50
cm with a flow speed of 2.5m/s
A:-2500
B:-25
C:-1250
D:-12.5
Correct Answer:- Option-C
Question34:-Ultrasonic level gauges operate based on the principle of
A:-Refraction
B:-Reflection
C:-Diffraction
D:-Transmission
Correct Answer:- Option-B
Question35:-Which of the following is/are the assumptions(s) on the flow of fluid in
Bernoulli's equation
A:-Incompressible
B:-Steady
C:-Inviscid
D:-All of the above
Correct Answer:- Option-D
Question36:-A given substance has a specific gravity of 5. Calculate its density in
KQ/m3
A:-200
B:-0.2
C:-20
D:-5000
Correct Answer:- Option-D
Question37:-Which of the following is an example of an orifice viscometer?
A:-Saybolt's viscometer
B:-Zeitfuchs viscometer
C:-Pinkevitch viscometer
D:-FitzSimons viscometer
Correct Answer:- Option-A
Question38:-Match the following quantities in Column | with their units in column II
Column | Column II
(a) Humidity (1) NsS/m2
(b) Torque (11) 9/൩