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Refrigeration and Air Conditioning

Refrigeration and Air Conditioning
In order to collect liquid refrigerant and to prevent it from going to a ________, a device known as accumulator is used at the suction of compressor.

Evaporator
Compressor
Condenser
Expansion valve

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Refrigeration and Air Conditioning
The condensing pressure due to the presence of non-condensable gases, as compared to that actually required for condensing temperatures without non-condensable gases,

Will be lower
Will be higher
Will remain unaffected
May be higher or lower depending upon the nature of non-condensable gases

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Refrigeration and Air Conditioning
Condensing temperature in a refrigerator is the temperature

At which refrigerant gas becomes liquid
Of evaporator
Of cooling medium
Of freezing zone

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Refrigeration and Air Conditioning
A vapour absorption refrigerator uses _________ as a refrigerant.

Water
Freon
Ammonia
Aqua-ammonia

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Refrigeration and Air Conditioning
The refrigerant after condensation process is cooled below the saturation temperature before throttling. Such a process is called

None of the listed here
Super-cooling
Normal cooling
Sub-cooling or under-cooling

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Refrigeration and Air Conditioning
In a vapour compression system, the condition of refrigerant is dry saturated vapour

Before entering the condenser
Before entering the compressor
After leaving the compressor
After leaving the condenser

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