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Refrigeration and Air Conditioning

Refrigeration and Air Conditioning
A refrigeration cycle operates between condenser temperature of + 27°C and evaporator temperature of -23°C. The Carnot coefficient of performance of cycle will be

5
1.2
6
0.2

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Refrigeration and Air Conditioning
The wet bulb temperature at 100% relative humidity is ________ dew point temperature.

Same as
Lower than
Higher than
None of these

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Refrigeration and Air Conditioning
The horizontal and non-uniformly spaced lines on a psychrometric chart indicates

Dry bulb temperature
Wet bulb temperature
Dew point temperature
Specific humidity

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Refrigeration and Air Conditioning
The higher temperature in vapour compression cycle occurs at

Receiver
Evaporator
Expansion valve
Compressor discharge

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Refrigeration and Air Conditioning
Carbon dioxide is

Odourless
Colourless
All of the listed here
Non-flammable

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Refrigeration and Air Conditioning
The ratio of the actual mass of water vapour in a unit mass of dry air to the mass of water vapour in the same mass of dry air when it is saturated at the same temperature and pressure, is called

Absolute humidity
Humidity ratio
Relative humidity
Degree of saturation

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