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



Mechanical Engineering : Refrigeration And Air Condition QUESTIONS AND ANSWERS :: part2 : 1 to 5

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

1.Air refrigeration operates on

Carnot cycle
Reversed Carnot cycle
Rankine cycle
Erricson cycle
Brayton cycle.

2.In refrigerators, the temperature difference between the evaporating refrigerant and the medium being cooled should be

high, of the order of 25�
as low as possible (3 to 11�C)
zero
any value
none of the above.

3.Formation of frost on evaporator in refrigerator

results in loss of heat due to poor heat transfer
increases heat transfer rate
is immaterial
can be avoided by proper design
decreases compressor power.

4.Refrigeration in aeroplanes usually employs the following refrigerant

C02
Freon-11
Freon-22
Air
none of the above.

5.Highest temperature encountered in refrigeration cycle should be

near critical temperature of refrigerant
above critical temperature
at critica. temperature
much below critical temperature
could be anywhere.

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

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