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Refrigeration and Air Conditioning

Refrigeration and Air Conditioning
Most air cooled condensers are designed to operate with a temperature difference of

8°C
14°C
22°C
5°C

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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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Refrigeration and Air Conditioning
In a psychrometric chart, specific humidity (moisture content) lines are

Curved lines
Vertical and uniformly spaced
Horizontal and non-uniformly spaced
Horizontal and uniformly spaced

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Refrigeration and Air Conditioning
Presence of moisture in a refrigerant affects the working of

Condenser
Evaporator
Expansion valve
Compressor

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Refrigeration and Air Conditioning
The heat rejection factor (HRF) is given by

1 - C.O.P.
1 + C.O.P
1 - (1/C.O.P)
1 + (1/C.O.P)

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Refrigeration and Air Conditioning
A certain refrigerating system has a normal operating suction pressure of 10 kg/cm gauge and condensing pressure of about 67 kg/cm. The refrigerant used is

Brine
Freon
Carbon dioxide
Ammonia

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MORE MCQ ON Refrigeration and Air Conditioning

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