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Refrigeration and Air Conditioning

Refrigeration and Air Conditioning
The undesirable property of a refrigerant is

High boiling point
Non-explosive
Non-flammable
Non-toxic

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Refrigeration and Air Conditioning
Vapour compression refrigeration is somewhat like

Carnot cycle
None of these
Reversed Carnot cycle

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Refrigeration and Air Conditioning
A reversible engine has ideal thermal efficiency of 30%. When it is used as a refrigerating machine with all other conditions unchanged, the coefficient of performance will be

4.33
3.33
2.33
1.33

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Refrigeration and Air Conditioning
During dehumidification process, _________ remains constant.

Wet bulb temperature
Specific humidity
Dry bulb temperature
Relative humidity

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

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Refrigeration and Air Conditioning
For large tonnage (more than 200 TR) air-conditioning applications, the compressor recommended is

Centrifugal
Screw
Reciprocating
Rotating

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MORE MCQ ON Refrigeration and Air Conditioning

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