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Refrigeration and Air Conditioning

Refrigeration and Air Conditioning
Accumulators should have adequate volume to store refrigerant charge at least

0.1
0.75
0.25
0.5

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Refrigeration and Air Conditioning
During dehumidification process, _________ remains constant.

Dry bulb temperature
Relative humidity
Specific humidity
Wet bulb temperature

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Refrigeration and Air Conditioning
A refrigerating system operating on reversed Brayton refrigeration cycle is used for maintaining 250 K. If the temperature at the end of constant pressure cooling is 300 K and rise in the temperature of air in the refrigerator is 50 K, then the net work of compression will be (assume air as working substance with Cp = 1 kJ/kg)

50 kJ/kg
125 kJ/kg
25 kJ/kg
100 kJ/kg

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Refrigeration and Air Conditioning
In mechanical refrigeration system, the refrigerant has the maximum temperature

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

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

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

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Refrigeration and Air Conditioning
The boiling point of ________ is 10.5°C.

Sulphur dioxide
Carbon dioxide
R-12
Ammonia

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MORE MCQ ON Refrigeration and Air Conditioning

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