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Refrigeration and Air Conditioning

Refrigeration and Air Conditioning
The material of pipe lines for a system using Freon as a refrigerant should be

Copper
Brass
Steel
Aluminium

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Refrigeration and Air Conditioning
Pick up the wrong statement. A refrigerant should have

Tow specific heat of liquid
High boiling point
Higher critical temperature
High latent heat of vaporisation

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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

Relative humidity
Humidity ratio
Absolute humidity
Degree of saturation

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Refrigeration and Air Conditioning
The operating temperature of a cold storage is -2°C. The heat leakage from the surrounding is 30 kW for the ambient temperature of 40°C. The actual C.O.P. of refrigeration plant used is one fourth that of ideal plant working between the same temperatures. The power required to drive the plant is

18.6 kW
1.86 kW
7.44 kW
3.72 kW

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Refrigeration and Air Conditioning
The coefficient of performance of a domestic refrigerator is ________ as compared to a domestic air-conditioner.

Less
None of these
Same
More

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Refrigeration and Air Conditioning
An evaporator is also known as

Cooling coil
Chilling coil
Freezing coil
All of these

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MORE MCQ ON Refrigeration and Air Conditioning

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