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Refrigeration and Air Conditioning

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
If a heat pump cycle operates between the condenser temperature of +27°C and evaporator temperature of -23°C, then the Carnot COP will be

5
1.2
6
0.2

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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 Carnot cycle
Reversed Joule cycle
Reversed Brayton cycle

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Refrigeration and Air Conditioning
The minimum temperature to which water can be cooled in a cooling tower is

Dew point temperature of air
Dry bulb temperature of air
Wet bulb temperature of air
Ambient air temperature

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Refrigeration and Air Conditioning
The unit of thermal diffusivity is

m²/h
m/hK
m/h
m²/hK

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Refrigeration and Air Conditioning
Critical pressure of a liquid is the pressure

Above which liquid becomes solid
Above which liquid becomes vapour
Above which liquid will remain liquid
Above which liquid becomes gas

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MORE MCQ ON Refrigeration and Air Conditioning

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