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Refrigeration and Air Conditioning

Refrigeration and Air Conditioning
A vapour absorption refrigeration system

Requires little power consumption
Gives noisy operation
Gives quiet operation
Cools below 0°C

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Refrigeration and Air Conditioning
The thermostatic expansion valve operates on the changes in the

Temperature of the evaporator
Degree of superheat at exit from the evaporator
None of these
Pressure in the evaporator

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Refrigeration and Air Conditioning
The minimum temperature to which water can be cooled in a cooling tower is

Dry bulb temperature of air
Wet bulb temperature of air
Ambient air temperature
Dew point temperature of air

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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?

0.8
0.25
0.5
1.25

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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

Degree of saturation
Relative humidity
Absolute humidity
Humidity ratio

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Refrigeration and Air Conditioning
A standard ice point temperature corresponds to the temperature of

Mixture of ice and water under equilibrium conditions
Ice at 4°C
Solid and dry ice
Water at 0°C

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MORE MCQ ON Refrigeration and Air Conditioning

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