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Refrigeration and Air Conditioning

Refrigeration and Air Conditioning
Freon group of refrigerants are

Non-inflammable and toxic
Toxic
Inflammable
Nontoxic and non-inflammable

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Refrigeration and Air Conditioning
A valve which maintains a constant degree of superheat at the end of the evaporator coil, is called

High side float valve
Thermostatic expansion valve
Automatic expansion valve
Low side float valve

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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
3.72 kW
1.86 kW
7.44 kW

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Refrigeration and Air Conditioning
In a vapour compression system, the condition of refrigerant before passing through the condenser is

Saturated liquid
Superheated vapour
Wet vapour
Dry saturated vapour

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Refrigeration and Air Conditioning
The lower horizontal line of the refrigeration cycle plotted on pressure-enthalpy diagram represents

Evaporation of the refrigerant liquid
Compression of the refrigerant vapour
Condensation of the refrigerant vapour
Metering of the refrigerant liquid

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Refrigeration and Air Conditioning
Chaperon equation is applicable for registration at

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

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MORE MCQ ON Refrigeration and Air Conditioning

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