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Refrigeration and Air Conditioning

Refrigeration and Air Conditioning
Short horizontal lines on pressure-enthalpy chart show

Constant total heat lines
Constant entropy lines
Constant pressure lines
Constant temperature lines

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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
Relative humidity
Humidity ratio
Degree of saturation

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Refrigeration and Air Conditioning
Efficiency of a Carnot engine is given as 80%. If the cycle direction be reversed, what will be the value of C.O.P. of reversed Carnot Cycle?

0.5
0.25
0.8
1.25

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Refrigeration and Air Conditioning
The specific humidity during heating and humidification process.

None of these
Decreases
Remains constant
Increases

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Refrigeration and Air Conditioning
The difference between dry bulb temperature and wet bulb temperature, is called

Dry bulb depression
Dew point depression
Wet bulb depression
Degree of saturation

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Refrigeration and Air Conditioning
In vapour compression cycle the condition of refrigerant is superheated vapour

After passing through the condenser
Before passing through the condenser
After passing through the expansion or throttle valve
Before entering the expansion valve

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MORE MCQ ON Refrigeration and Air Conditioning

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