Kerala PSC Previous Years Question Paper & Answer
Page:6
Below are the scanned copy of Kerala Public Service Commission (KPSC) Question Paper with answer keys of Exam Name 'Refrigeration Mechanic (HER)' And exam conducted in the year 2020. And Question paper code was '014/2020/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.
Correct Answer:- Option ®
Question41:-A system of fixed mass and identity whose boundaries are determined by the space of matter occupied init is called
‘AcClosed system
B:-Open system
C=lsolated system
D-Control volume
Correct Answer:- Option-é
Question42:-Formation of frost on evaporator in refrigerator
‘Ac Results in loss of heat due to poor heat transfer
Bs-Increases heat transfer rate
೦-೫85 no effect
D-Decreases compressor power
Correct Answer:- Option-é
Question43:-Chemical formula of Freon-12
Accel,
७,८८.९
மயா
0005.
Correct Answer:- Option-é
Question44:-Heating of air without changing its moisture content takes place on psychrometric chart along
‘A-A vertical line upward
B:-A vertical ine downward
CA horizontal line of the constant dew point
DCurved line
Correct Answer:- Option-C
Question45:-Drift loss in cooling tower is of the order of
Aol to 5%
B:-5 to 10%
0:10 to 20%
D-25 to 50%
Correct Answer:- Option-C
Question46:-Out of the following which one is an example for intensive property ?
‘AcTemperature
Bs Pressure
ണ്ടി
D-All the above
Correct Answer:- Option-D
Question47::Which of the following property remains constant during throttling process ?
‘Acintemal energy
Bs Pressure
CeEntropy
D-Enthalpy
Correct Answer:- Option-D
Question48:-According to Charles law for a perfect gas
கோபுர = Ps[P,, if V is kept constant
ന =V,V,, if Pis kept constant
എ ഡം if Tis kept constant
D:-PV/T = constant
Correct Answer: Option ®