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Refrigeration and Air Conditioning

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

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

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Refrigeration and Air Conditioning
The dry bulb temperature lines, on the psychrometric chart are

Horizontal and non-uniformly spaced
Curved lines
Vertical and uniformly spaced
Horizontal and uniformly spaced

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Refrigeration and Air Conditioning
Which of the following refrigerant has the lowest freezing point?

R-11
R-22
Ammonia
R-12

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Refrigeration and Air Conditioning
The wet bulb depression indicates _________ humidity of the air.

Absolute
Specific
Relative
None of these

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Refrigeration and Air Conditioning
In order to collect liquid refrigerant and to prevent it from going to a ________, a device known as accumulator is used at the suction of compressor.

Compressor
Expansion valve
Condenser
Evaporator

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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

2.33
4.33
1.33
3.33

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MORE MCQ ON Refrigeration and Air Conditioning

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