The relative humidity is defined as

Refrigeration and Air Conditioning
The relative humidity is defined as

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 mass of water vapour present in 1 kg of dry air

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

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 mass of water vapour present in 1 kg of dry air

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
In a reversed Brayton cycle, the heat is absorbed by the air during

Constant pressure cooling process

Constant pressure expansion process

Isentropic compression process

Isentropic expansion process

Constant pressure cooling process

Constant pressure expansion process

Isentropic compression process

Isentropic expansion process

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Refrigeration and Air Conditioning
Short horizontal lines on pressure-enthalpy chart show

Constant temperature lines

Constant total heat lines

Constant pressure lines

Constant entropy lines

Constant temperature lines

Constant total heat lines

Constant pressure lines

Constant entropy lines

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Refrigeration and Air Conditioning
The difference between dry bulb temperature and wet bulb temperature, is called

Degree of saturation

Dew point depression

Wet bulb depression

Dry bulb depression

Degree of saturation

Dew point depression

Wet bulb depression

Dry bulb depression

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Refrigeration and Air Conditioning
Which of the following refrigerant has the maximum ozone depletion potential in the stratosphere?

Carbon dioxide

Sulphur dioxide

Fluorine

Ammonia

Carbon dioxide

Sulphur dioxide

Fluorine

Ammonia

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Refrigeration and Air Conditioning
The advantage of dry compression is that

It results in high volumetric and mechanical efficiency

It permits higher speeds to be used

It permits complete evaporation in the evaporator

All of these

It results in high volumetric and mechanical efficiency

It permits higher speeds to be used

It permits complete evaporation in the evaporator

All of these

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Refrigeration and Air Conditioning

Refrigeration and Air Conditioning The relative humidity is defined as

Refrigeration and Air Conditioning In a reversed Brayton cycle, the heat is absorbed by the air during

Refrigeration and Air Conditioning Short horizontal lines on pressure-enthalpy chart show

Refrigeration and Air Conditioning The difference between dry bulb temperature and wet bulb temperature, is called

Refrigeration and Air Conditioning Which of the following refrigerant has the maximum ozone depletion potential in the stratosphere?

Refrigeration and Air Conditioning The advantage of dry compression is that

Refrigeration and Air Conditioning
The relative humidity is defined as

Refrigeration and Air Conditioning
In a reversed Brayton cycle, the heat is absorbed by the air during

Refrigeration and Air Conditioning
Short horizontal lines on pressure-enthalpy chart show

Refrigeration and Air Conditioning
The difference between dry bulb temperature and wet bulb temperature, is called

Refrigeration and Air Conditioning
Which of the following refrigerant has the maximum ozone depletion potential in the stratosphere?

Refrigeration and Air Conditioning
The advantage of dry compression is that