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Refrigeration and Air Conditioning

Refrigeration and Air Conditioning
The alignment circle is marked on the psychrometric chart at

26°C DBT and 50% RH
20°C DBT and 60% RH
26°C DBT and 60% RH
20°C DBT and 50% RH

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Refrigeration and Air Conditioning
In vapour compression cycle, the condition of refrigerant is saturated liquid

After passing through the expansion throttle valve
After passing through the condenser
Before entering the expansion valve
Before passing through the condenser

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

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

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Refrigeration and Air Conditioning
The capillary tube is not used in large capacity refrigeration systems because

It is made of copper
Capacity control is not possible
Required pressure drop cannot be achieved
Cost is too high

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Refrigeration and Air Conditioning
The leaks in a refrigeration system using Freon are detected by

Halide torch which on detection produces greenish flame lighting
Sulphur sticks which on detection gives white smoke
Smelling
Using reagents

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Refrigeration and Air Conditioning
In aircraft, air refrigeration Cycle is used because of

High heat transfer rate
Low temperature at high altitudes
Low weight per tonne of refrigeration
Higher coefficient of performance

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MORE MCQ ON Refrigeration and Air Conditioning

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