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Refrigeration and Air Conditioning

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

Miniature sealed unit
Centrifugal
Piston type reciprocating
Axial

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Refrigeration and Air Conditioning
In aqua ammonia and Lithium bromide water absorption refrigeration systems, the refrigerants are respectively

Water and water
Ammonia and lithium bromide
Water and lithium bromide
Ammonia and water

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Refrigeration and Air Conditioning
In a refrigeration cycle, the flow of refrigerant is controlled by

Expansion valve
Evaporator
Condenser
Compressor

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Refrigeration and Air Conditioning
The mass of water vapour present in __________ is called absolute humidity.

1 m3 of dry air
1 kg of dry air
1 kg of wet air
1 m3 of water

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Refrigeration and Air Conditioning
Vertical lines on pressure-enthalpy chart show constant

Temperature lines
Total heat lines
Entropy lines
Pressure lines

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

All of these
Soap and water
Sulphur sticks
Halide torch

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MORE MCQ ON Refrigeration and Air Conditioning

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