Mechanical Engineering Questions And Answers :: Refrigeration And Air Condition: part2



Mechanical Engineering : Refrigeration And Air Condition QUESTIONS AND ANSWERS :: part2 : 11 to 15

Following Mechanical Engineering Multiple choice objective type questions and answers will help you in BSNL JTO, GATE 2024 and IES 2024 examinations :

11.The bank of tubes at the back of domestic refrigerator are

condenser tubes
evaporator tubes
refrigerant cooling tubes
capillary tubes
throttling device.

12.The value of COP in vapour compression cycle is usually

always less than unity
always more than unity
equal to unity
any one of the above
none of the above.

13.Absorption system normally uses the following refrigerant

Freon-11
Freon-22
C02
S02
ammonia.

14.One of the purposes of sub-cooling the liquid refrigerant is to

reduce compressor overheating
reduce compressor discharge tempera-ture
increase cooling effect
ensure that only liquid and not the vapour enters the expansion (throttling) valve
none of the above.

15.The domestic refrigerator uses following type of compressor

centrifugal
axial
miniature sealed unit
piston type reciprocating
none of the above.

More Refrigeration And Air Condition QUESTIONS AND ANSWERS available in next pages

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