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Refrigeration and Air Conditioning

Refrigeration and Air Conditioning
Accumulators should have adequate volume to store refrigerant charge at least

0.25
0.1
0.75
0.5

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Refrigeration and Air Conditioning
The ratio of actual mass of water vapour in a given volume of moist air to the mass of water vapour in the same volume of saturated air at the same temperature and pressure, is called

Humidity ratio
Degree of saturation
Relative humidity
Absolute humidity

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

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Refrigeration and Air Conditioning
Pick up the correct statement about giving up of heat from one medium to other in ammonia absorption system

Weak solution to strong solution
Ammonia vapours to weak solution
Strong solution to ammonia vapour
Strong solution to weak solution

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Refrigeration and Air Conditioning
The thermostatic expansion valve is used in ________ type of evaporators.

Flooded
Dry
DX coil
None of these

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

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

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