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Refrigeration and Air Conditioning

Refrigeration and Air Conditioning
The domestic refrigerator uses following type of compressor

Piston type reciprocating
Miniature sealed unit
Axial
Centrifugal

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

All of these
Halide torch
Sulphur sticks
Soap and water

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

Equal to
Less than
Greater than
None of the listed here

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Refrigeration and Air Conditioning
The lower horizontal line of the refrigeration cycle plotted on pressure-enthalpy diagram represents

Metering of the refrigerant liquid
Compression of the refrigerant vapour
Evaporation of the refrigerant liquid
Condensation of the refrigerant vapour

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Refrigeration and Air Conditioning
The dehumidification process, on the psychrometric chart, is shown by

Curved line
Inclined line
Vertical line
Horizontal line

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

Decreases
None of these
Increases
Remains constant

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MORE MCQ ON Refrigeration and Air Conditioning

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