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Refrigeration and Air Conditioning

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

6
1.2
0.2
5

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

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

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Refrigeration and Air Conditioning
The temperature of air recorded by a thermometer, when its bulb is surrounded by a wet cloth exposed to the air, is called

Dry bulb temperature
Dew point temperature
None of these
Wet bulb temperature

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Refrigeration and Air Conditioning
The specific humidity during heating and humidification process.

Decreases
Increases
None of these
Remains constant

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Refrigeration and Air Conditioning
One tonne of refrigeration (1TR) means that the heat removing capacity is

210 kJ/min
420 kJ/min
620 kJ/min
21 kJ/min

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Refrigeration and Air Conditioning
Air refrigeration cycle is used in

Gas liquefaction
Air conditioning
Domestic refrigerators
Commercial refrigerators

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MORE MCQ ON Refrigeration and Air Conditioning

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