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Refrigeration and Air Conditioning

Refrigeration and Air Conditioning
Air refrigerator works on

Both (A) and (B)
Bell Coleman cycle
None of these
Reversed Carnot cycle

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Refrigeration and Air Conditioning
The ratio of actual mass of water vapour in a given volume of moist air to the mass of water vapour in the same volume of saturated air at the same temperature and pressure, is called

Absolute humidity
Relative humidity
Humidity ratio
Degree of saturation

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Refrigeration and Air Conditioning
A refrigeration cycle operates between condenser temperature of + 27°C and evaporator temperature of -23°C. The Carnot coefficient of performance of cycle will be

1.2
5
0.2
6

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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

Absolute humidity
Degree of saturation
Humidity ratio
Relative humidity

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Refrigeration and Air Conditioning
The thermostatic expansion valve is used in ________ type of evaporators.

DX coil
None of these
Dry
Flooded

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Refrigeration and Air Conditioning
Freon group of refrigerants are

Nontoxic and non-inflammable
Toxic
Inflammable
Non-inflammable and toxic

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MORE MCQ ON Refrigeration and Air Conditioning

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