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Refrigeration and Air Conditioning

Refrigeration and Air Conditioning
The difference between dry bulb temperature and wet bulb temperature, is called

Degree of saturation
Wet bulb depression
Dew point depression
Dry bulb depression

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Refrigeration and Air Conditioning
Efficiency of a Carnot engine is given as 80%. If the cycle direction be reversed, what will be the value of C.O.P. of reversed Carnot Cycle?

0.8
1.25
0.25
0.5

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Refrigeration and Air Conditioning
Ammonia is

Highly toxic and inflammable
Non-toxic
Toxic and non-inflammable
Non-inflammable

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Refrigeration and Air Conditioning
In a domestic vapour compression refrigerator, the refrigerant commonly used is

All of these
R-12
Ammonia
CO?

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Refrigeration and Air Conditioning
A bootstrap air cooling system has

Three heat exchangers
One heat exchanger
Two heat exchangers
Four heat exchangers

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Refrigeration and Air Conditioning
The refrigerant supplied to a compressor must be

A mixture of liquid and vapour refrigerant
Dry saturated liquid refrigerant
Superheated vapour refrigerant
None of these

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MORE MCQ ON Refrigeration and Air Conditioning

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