Refrigeration and Air Conditioning
In a flooded evaporator refrigerator, an accumulator at suction of compressor is used to

Detect liquid in vapour
Collect vapours
Superheat the vapour
Collect liquid refrigerant and prevent it from going to compressor

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Refrigeration and Air Conditioning
Degree of saturation or percentage humidity is

The mass of water vapour present in 1 kg of dry air
The mass of water vapour present in 1 m³ of dry air
The ratio of the actual mass of water vapour in a unit mass of dry air to the mass of water vapour in the same mass of dry air when it is saturated at the same temperature and pressure
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

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Refrigeration and Air Conditioning
Which of the following statement is correct?

All of the listed here
The wet bulb temperature is a measure of enthalpy of moist air
The wet bulb and dry bulb temperature are equal at saturation condition
The constant enthalpy lines are also constant wet bulb temperature lines

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