The minimum temperature to which water can be cooled in a cooling tower is

Refrigeration and Air Conditioning
The minimum temperature to which water can be cooled in a cooling tower is

Dew point temperature of air

Ambient air temperature

Wet bulb temperature of air

Dry bulb temperature of air

Dew point temperature of air

Ambient air temperature

Wet bulb temperature of air

Dry bulb temperature of air

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Refrigeration and Air Conditioning
The relative humidity is defined as

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 m3 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 kg 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 m3 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 kg of dry air

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Refrigeration and Air Conditioning
Which of the following refrigerants has lowest freezing point?

Freon-22

NH3

CO2

Freon-12

Freon-22

NH3

CO2

Freon-12

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Refrigeration and Air Conditioning
The refrigerant after condensation process is cooled below the saturation temperature before throttling. Such a process is called

Sub-cooling or under-cooling

None of the listed here

Super-cooling

Normal cooling

Sub-cooling or under-cooling

None of the listed here

Super-cooling

Normal cooling

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Refrigeration and Air Conditioning
Pressure of water vapour is given by

0.622 Pv/ (Pb - Pv)

None of these

[Pv (Pb - Pd)]/ [Pd (Pb - Pv)]

μ/[1 - (1 - μ) (Ps/Pb)]

0.622 Pv/ (Pb - Pv)

None of these

[Pv (Pb - Pd)]/ [Pd (Pb - Pv)]

μ/[1 - (1 - μ) (Ps/Pb)]

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Refrigeration and Air Conditioning
The refrigerant supplied to a compressor must be

None of these

Dry saturated liquid refrigerant

Superheated vapour refrigerant

A mixture of liquid and vapour refrigerant

None of these

Dry saturated liquid refrigerant

Superheated vapour refrigerant

A mixture of liquid and vapour refrigerant

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Refrigeration and Air Conditioning

Refrigeration and Air Conditioning The minimum temperature to which water can be cooled in a cooling tower is

Refrigeration and Air Conditioning The relative humidity is defined as

Refrigeration and Air Conditioning Which of the following refrigerants has lowest freezing point?

Refrigeration and Air Conditioning The refrigerant after condensation process is cooled below the saturation temperature before throttling. Such a process is called

Refrigeration and Air Conditioning Pressure of water vapour is given by

Refrigeration and Air Conditioning The refrigerant supplied to a compressor must be

Refrigeration and Air Conditioning
The minimum temperature to which water can be cooled in a cooling tower is

Refrigeration and Air Conditioning
The relative humidity is defined as

Refrigeration and Air Conditioning
Which of the following refrigerants has lowest freezing point?

Refrigeration and Air Conditioning
The refrigerant after condensation process is cooled below the saturation temperature before throttling. Such a process is called

Refrigeration and Air Conditioning
Pressure of water vapour is given by

Refrigeration and Air Conditioning
The refrigerant supplied to a compressor must be