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Refrigeration and Air Conditioning

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

Compression
Direct
Absorption
Indirect

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

Back pressure
Suction pressure
Discharge pressure
Critical pressure

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Refrigeration and Air Conditioning
A pressure gauge on the discharge side of a refrigerant compressor reads too high. The reasons will be

Lack of cooling water
Dirty condenser surface
All of these
Water temperature being high

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

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

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Refrigeration and Air Conditioning
The process, generally used in winter air-conditioning to warm and humidity the air, is called

Heating and humidification
Humidification
Cooling and dehumidification
Dehumidification

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Refrigeration and Air Conditioning
During humidification process, __________ increases.

Relative humidity
Wet bulb temperature
Dry bulb temperature
Specific humidity

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MORE MCQ ON Refrigeration and Air Conditioning

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