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Refrigeration and Air Conditioning

Refrigeration and Air Conditioning
Rating of a domestic refrigerator is of the order of

0.1 ton
10 tons
5 tons
40 tons

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Refrigeration and Air Conditioning
In a psychrometric process, the sensible heat added is 30 kJ/s and the latent heat added is 20 kJ/s. The sensible heat factor for the process will be

0.3
0.67
0.6
1.5

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Refrigeration and Air Conditioning
The comfort conditions in air conditioning are at (where DBT = Dry bulb temperature, and RH = Relative humidity)

22°C DBT and 60% RH
25°C DBT and 40% RH
25°C DBT and 100% RH
20°C DBT and 80% RH

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Refrigeration and Air Conditioning
Critical pressure of a liquid is the pressure

Above which liquid becomes solid
Above which liquid will remain liquid
Above which liquid becomes gas
Above which liquid becomes vapour

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Refrigeration and Air Conditioning
The change in evaporator temperature in a refrigeration cycle, as compared to change in condenser temperature, influences the value of C.O.P.

Equally
Unpredictable
Less
More

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Refrigeration and Air Conditioning
Chaperon equation is applicable for registration at

Saturation point of vapour
Sublimation temperature
Triple point
Saturation point of liquid

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MORE MCQ ON Refrigeration and Air Conditioning

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