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Refrigeration and Air Conditioning

Refrigeration and Air Conditioning
The operating pressure for refrigerating units using R-12 as a refrigerant is

15 bar
8 bar
2 bar
30 bar

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Refrigeration and Air Conditioning
In a domestic refrigerator, a capillary tube controls the flow of refrigerant from the

Expansion valve to the evaporator
Condenser to the expansion valve
Evaporator to the thermostat
Condenser to the evaporator

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Refrigeration and Air Conditioning
Which of the following refrigerant has the maximum ozone depletion potential in the stratosphere?

Sulphur dioxide
Carbon dioxide
Ammonia
Fluorine

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Refrigeration and Air Conditioning
Highest pressure encountered in a refrigeration system should be

Critical pressure of refrigerant
Much above critical pressure
Near critical pressure
Much below critical pressure

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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 Joule cycle
Reversed Otto cycle
Reversed Carnot cycle

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Refrigeration and Air Conditioning
An evaporator is also known as

Cooling coil
Freezing coil
All of these
Chilling coil

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MORE MCQ ON Refrigeration and Air Conditioning

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