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Refrigeration and Air Conditioning

Refrigeration and Air Conditioning
An Electrolux refrigerator is called a ___ absorption system.

Single fluid
None of the listed here
Two fluids
Three fluids

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Refrigeration and Air Conditioning
In a refrigeration system, the expansion device is connected between the

Receiver and evaporator
Evaporator and compressor
Compressor and condenser
Condenser and receiver

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Refrigeration and Air Conditioning
If a gas is to be liquefied, its temperature must be

Equal to critical temperature
Reduced to a value below its critical temperature
None of these
Increased to a value above its critical temperature

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

Miniature sealed unit
Axial
Piston type reciprocating
Centrifugal

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Refrigeration and Air Conditioning
Moisture should be removed from refrigerants to avoid

Freezing at the expansion valve
Restriction to refrigerant flow
All of these
Corrosion of steel plates

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Refrigeration and Air Conditioning
An important characteristic of absorption system of refrigeration is

noisy operation
very little power consumption
quiet operation
cooling below 0°C

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