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Refrigeration and Air Conditioning

Refrigeration and Air Conditioning
The pressure at the outlet of a refrigerant compressor is called

Suction pressure
Back pressure
Discharge pressure
Critical pressure

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Refrigeration and Air Conditioning
Chaperon equation is a relation between

Temperature and enthalpy
Temperature, pressure and enthalpy
Temperature, pressure, specific volume and enthalpy
Specific volume and enthalpy

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Refrigeration and Air Conditioning
A refrigeration cycle operates between condenser temperature of + 27°C and evaporator temperature of -23°C. The Carnot coefficient of performance of cycle will be

0.2
1.2
6
5

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Refrigeration and Air Conditioning
In refrigerators, the temperature difference between the evaporating refrigerant and the medium being cooled should be

Zero
High, of the order of 25°
As low as possible (3 to 11°C)
Any value

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Refrigeration and Air Conditioning
In a spray washing system, if the temperature of water is higher than the dry bulb temperature of entering air, then the air is

Cooled and humidified
Heated and dehumidified
Heated and humidified
Cooled and dehumidified

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Refrigeration and Air Conditioning
Condensing temperature in a refrigerator is the temperature

Of freezing zone
Of cooling medium
At which refrigerant gas becomes liquid
Of evaporator

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MORE MCQ ON Refrigeration and Air Conditioning

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