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Refrigeration and Air Conditioning

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

Miniature sealed unit
Piston type reciprocating
Axial
Centrifugal

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Refrigeration and Air Conditioning
In aqua ammonia absorption refrigeration system, incomplete rectification leads to accumulation of water in

Absorber
Evaporator
None of these
Condenser

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Refrigeration and Air Conditioning
The C.O.P. of a refrigeration cycle with lowering of condenser temperature, keeping the evaporator temperature constant, will

Decrease
Increase
Remain unaffected
May increase or decrease depending on the type of refrigerant used

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

Ammonia
Sulphur dioxide
R-12
Carbon dioxide

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Refrigeration and Air Conditioning
Chaperon equation is a relation between

Temperature and enthalpy
Temperature, pressure, specific volume and enthalpy
Temperature, pressure and enthalpy
Specific volume and enthalpy

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

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

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MORE MCQ ON Refrigeration and Air Conditioning

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