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Refrigeration and Air Conditioning

Refrigeration and Air Conditioning
The Freon group of refrigerants are

Halocarbon refrigerants
Zoetrope refrigerants
Hydrocarbon refrigerants
Inorganic refrigerants

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Refrigeration and Air Conditioning
In chemical dehumidification process,

Dry bulb temperature increases
Dew point temperature decreases
All of these
Wet bulb temperature decreases

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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

1.86 kW
18.6 kW
7.44 kW
3.72 kW

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Refrigeration and Air Conditioning
For large tonnage (more than 200 TR) air-conditioning applications, the compressor recommended is

Centrifugal
Rotating
Screw
Reciprocating

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Refrigeration and Air Conditioning
During heating and humidification, the final relative humidity of air

Is lower than that of the entering air
Is higher than that of the entering air
Can be lower or higher than that of the entering air
None of the listed here

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Refrigeration and Air Conditioning
An important characteristic of absorption system of refrigeration is

very little power consumption
quiet operation
cooling below 0°C
noisy operation

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MORE MCQ ON Refrigeration and Air Conditioning

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