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Refrigeration and Air Conditioning

Refrigeration and Air Conditioning
The difference between dry bulb temperature and wet bulb temperature, is called

Dew point depression
Dry bulb depression
Degree of saturation
Wet bulb depression

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

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

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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

0.376
0.6
0.4
0.67

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Refrigeration and Air Conditioning
The comfort conditions in air conditioning are at (where DBT = Dry bulb temperature, and RH = Relative humidity)

25°C DBT and 100% RH
25°C DBT and 40% RH
22°C DBT and 60% RH
20°C DBT and 80% RH

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Refrigeration and Air Conditioning
In vapour compression refrigeration system, refrigerant occurs as liquid between

Condenser and expansion valve
Compressor and evaporator
Compressor and condenser
Expansion valve and evaporator

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Refrigeration and Air Conditioning
The bank of tubes at the back of domestic refrigerator is

Condenser tubes
Refrigerant cooling tubes
Evaporator tubes
Capillary tubes

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MORE MCQ ON Refrigeration and Air Conditioning

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