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Refrigeration and Air Conditioning

Refrigeration and Air Conditioning
The curved lines on a psychrometric chart indicates

Relative humidity
Dew point temperature
Wet bulb temperature
Dry bulb temperature

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Refrigeration and Air Conditioning
In a vapour absorption refrigeration system, the compressor of the vapour compression system is replaced by

Generator
Absorber, generator and liquid pump
Absorber and generator
Liquid pump

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Refrigeration and Air Conditioning
The wet bulb temperature at 100% relative humidity is___ dry bulb temperature.

None of the listed here
Same as
Higher than
Lower than

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Refrigeration and Air Conditioning
In air-conditioning of aeroplanes, using air as a refrigerant, the cycle used is

Reversed Otto cycle
Reversed Joule cycle
Reversed Carnot cycle
Reversed Brayton cycle

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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?

0.25
0.5
1.25
0.8

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Refrigeration and Air Conditioning
In larger industrial and commercial reciprocating compression systems, refrigerant widely used is

Sulphur dioxide
R-12
Carbon dioxide
Ammonia

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MORE MCQ ON Refrigeration and Air Conditioning

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