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Refrigeration and Air Conditioning

Refrigeration and Air Conditioning
During cooling and dehumidification, dry bulb temperature

None of these
Remains constant
Increases
Decreases

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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
0.2
1.2
6

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Refrigeration and Air Conditioning
If the evaporator temperature of a plant is lowered, keeping the condenser temperature constant, the h.p. of compressor required will be

More
More/less depending on rating
Same
Less

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Refrigeration and Air Conditioning
Aqua ammonia is used as refrigerant in the following type of refrigeration system

Direct
Compression
Indirect
Absorption

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Refrigeration and Air Conditioning
The ratio of the actual mass of water vapour in a unit mass of dry air to the mass of water vapour in the same mass of dry air when it is saturated at the same temperature and pressure, is called

Degree of saturation
Humidity ratio
Absolute humidity
Relative humidity

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Refrigeration and Air Conditioning
The pressure at the inlet of a refrigerant compressor is called

Suction pressure
Critical pressure
Back pressure
Discharge pressure

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MORE MCQ ON Refrigeration and Air Conditioning

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