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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

0.376
0.4
0.6
0.67

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Refrigeration and Air Conditioning
Superheating in a refrigeration cycle

Decreases C.O.P
Other factors decide C.O.P
Increases C.O.P
O.P remains unaltered

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Refrigeration and Air Conditioning
An evaporator is also known as

All of these
Chilling coil
Freezing coil
Cooling coil

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Refrigeration and Air Conditioning
During sensible cooling of air, specific humidity

Increases
Decreases
None of the listed here
Remains constant

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Refrigeration and Air Conditioning
Carbon dioxide is

Colourless
Non-flammable
Odourless
All of the listed here

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Refrigeration and Air Conditioning
The formation of frost on cooling coils in a refrigerator

Reduces power consumption
Increases heat transfer
Increases power consumption
Improves C.O.P. of the system

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