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Refrigeration and Air Conditioning

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

Centrifugal
Miniature sealed unit
Piston type reciprocating
Axial

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Refrigeration and Air Conditioning
The pressure at the inlet of a refrigerant compressor is called

Critical pressure
Suction pressure
Discharge pressure
Back pressure

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Refrigeration and Air Conditioning
The specific humidity during dehumidification process

Increases
Decreases
None of these
Remains constant

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

Carbon dioxide
Sulphur dioxide
R-12
Ammonia

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Refrigeration and Air Conditioning
In air-conditioning of aeroplanes, using air as a refrigerant, the cycle used is

Reversed Brayton cycle
Reversed Carnot cycle
Reversed Joule cycle
Reversed Otto cycle

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Refrigeration and Air Conditioning
If a heat pump cycle operates between the condenser temperature of +27°C and evaporator temperature of -23°C, then the Carnot COP will be

5
6
1.2
0.2

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MORE MCQ ON Refrigeration and Air Conditioning

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