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Refrigeration and Air Conditioning

Refrigeration and Air Conditioning
A condenser of refrigeration system rejects heat at the rate of 120 kW, while its compressor consumes a power of 30 kW. The coefficient of performance of the system will be

43833
4
3
43834

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Refrigeration and Air Conditioning
While designing the refrigeration system of an aircraft, the prime consideration is that the

Mass of the refrigeration equipment is low
Mass of refrigerant circulated in the system is low
System has high C.O.P.
Power per TR is low

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Refrigeration and Air Conditioning
Which of the following cycles uses air as the refrigerant?

Stirling
Carnot
Ericson
Bell Coleman

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Refrigeration and Air Conditioning
Highest temperature encountered in refrigeration cycle should be

Near critical temperature of refrigerant
Much below critical temperature
At critical Temperature
Above critical temperature

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Refrigeration and Air Conditioning
For unsaturated air, the dew point temperature is __________ wet bulb temperature.

More than
Equal to
None of these
Less than

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Refrigeration and Air Conditioning
A certain refrigerating system has a normal operating suction pressure of 10 kg/cm gauge and condensing pressure of about 67 kg/cm. The refrigerant used is

Freon
Carbon dioxide
Ammonia
Brine

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