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Refrigeration and Air Conditioning

Refrigeration and Air Conditioning
The leakage in a refrigeration system using Freon is detected by

Sulphur sticks
Soap and water
Halide torch
All of these

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Refrigeration and Air Conditioning
In actual air-conditioning applications for R-12 and R-22, and operating at a condenser temperature of 40° C and an evaporator temperature of 5° C, the heat rejection factor is about

1.25
5.12
2.15
1

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Refrigeration and Air Conditioning
The wet bulb temperature during sensible heating of air

Decreases
Remains constant
Increases
None of these

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Refrigeration and Air Conditioning
In vapour compression cycle the condition off refrigerant is dry saturated vapour

After passing through the expansion or throttle valve
Before entering the compressor
After passing through the condenser
Before passing through the condenser

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Refrigeration and Air Conditioning
The coefficient of performance of Heat Pump is always ___ one.

Greater than
Less than
None of the listed here
Equal to

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Refrigeration and Air Conditioning
The refrigerant for a refrigerator should have

High sensible heat
Low latent heat
High total heat
High latent heat

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MORE MCQ ON Refrigeration and Air Conditioning

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