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Refrigeration and Air Conditioning

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
0.67
0.6
0.376

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Refrigeration and Air Conditioning
Moisture should be removed from refrigerants to avoid

Restriction to refrigerant flow
Corrosion of steel plates
All of these
Freezing at the expansion valve

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Refrigeration and Air Conditioning
In refrigerator, liquid receiver is required between condenser and flow controlling device, if quantity of refrigerant for system is

More than or equal to 3.65 kg
Less than 2 kg
More than 10 kg
There is no such consideration

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Refrigeration and Air Conditioning
During sensible heating of air _________ decreases.

Wet bulb temperature
Relative humidity
Specific humidity
Dry bulb temperature

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Refrigeration and Air Conditioning
Bell Coleman cycle is a

Reversed Carnot cycle
Reversed Joule cycle
Reversed Rankine cycle
Reversed Otto cycle

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Refrigeration and Air Conditioning
The dry bulb temperature during sensible heating of air

Decreases
None of these
Remains constant
Increases

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