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Refrigeration and Air Conditioning

Refrigeration and Air Conditioning
For obtaining high COP, the pressure range of compressor should be

High
Low
Any value
Optimum

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Refrigeration and Air Conditioning
The curved lines on a psychrometric chart indicates

Relative humidity
Dry bulb temperature
Wet bulb temperature
Dew point temperature

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Refrigeration and Air Conditioning
The leaks in a refrigeration system using Freon are detected by

Using reagents
Sulphur sticks which on detection gives white smoke
Halide torch which on detection produces greenish flame lighting
Smelling

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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
In mechanical refrigeration system, the refrigerant has the maximum temperature

In evaporator
Between compressor and condenser
Between condenser and evaporator
Before expansion valve

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

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MORE MCQ ON Refrigeration and Air Conditioning

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