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Refrigeration and Air Conditioning

Refrigeration and Air Conditioning
In a vapour compression system, the condition of refrigerant before entering the expansion or throttle valve is

High pressure saturated liquid
Dry vapour
Very wet vapour
Wet vapour

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Refrigeration and Air Conditioning
The coefficient of performance is the ratio of the refrigerant effect to the

Work done by compressor
All of these
Enthalpy increase in compressor
Heat of compression

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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

0.6
0.67
0.3
1.5

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Refrigeration and Air Conditioning
During heating and humidification, the final relative humidity of air

None of the listed here
Can be lower or higher than that of the entering air
Is lower than that of the entering air
Is higher than that of the entering air

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Refrigeration and Air Conditioning
In vapour compression cycle the condition off refrigerant is dry saturated vapour

Before entering the compressor
Before passing through the condenser
After passing through the expansion or throttle valve
After passing through the condenser

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Refrigeration and Air Conditioning
One ton refrigeration corresponds to

80 kcal/ min
50 kcal/ min
50 kcal/ hr
80 kcal/ hr

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MORE MCQ ON Refrigeration and Air Conditioning

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