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Refrigeration and Air Conditioning

Refrigeration and Air Conditioning
The suction pipe diameter of refrigerating unit compressor in comparison to delivery side is

Equal
Smaller
Smaller/bigger depending on capacity
Bigger

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Refrigeration and Air Conditioning
The atmospheric air at dry bulb temperature of 15°C enters a heating coil maintained at 40°C. The air leaves the heating coil at 25°C. The bypass factor of the heating coil is

0.4
0.6
0.67
0.376

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Refrigeration and Air Conditioning
The condition of refrigerant after passing through the condenser in a vapour compression system is

Dry saturated vapour
Saturated liquid
Wet vapour
Superheated vapour

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Refrigeration and Air Conditioning
Air refrigeration operates on

Reversed Carnot cycle
Carnot cycle
Rankine’s cycle
Brayton cycle

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Refrigeration and Air Conditioning
The vertical and uniformly spaced lines on a psychrometric chart indicates

Wet bulb temperature
Specific humidity
Dew point temperature
Dry bulb temperature

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Refrigeration and Air Conditioning
Formation of frost on evaporator in refrigerator

Increases heat transfer rate
Can be avoided by proper design
Results in loss of heat due to poor heat transfer
Is immaterial

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MORE MCQ ON Refrigeration and Air Conditioning

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