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

Health is the greatest gift, contentment is the greatest wealth -Buddha

Opportunity is missed by most people because it is dressed in overalls and looks like work.- Thomas Edison

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

Refrigeration And Air Condition QUESTIONS AND ANSWERS

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