The lower horizontal line of the refrigeration cycle plotted on pressure-enthalpy diagram represents

Refrigeration and Air Conditioning
The lower horizontal line of the refrigeration cycle plotted on pressure-enthalpy diagram represents

Compression of the refrigerant vapour

Condensation of the refrigerant vapour

Evaporation of the refrigerant liquid

Metering of the refrigerant liquid

Compression of the refrigerant vapour

Condensation of the refrigerant vapour

Evaporation of the refrigerant liquid

Metering of the refrigerant liquid

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Refrigeration and Air Conditioning
In mechanical refrigeration system, the refrigerant has the maximum temperature

Before expansion valve

Between condenser and evaporator

Between compressor and condenser

In evaporator

Before expansion valve

Between condenser and evaporator

Between compressor and condenser

In evaporator

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Refrigeration and Air Conditioning
During heating and dehumidification process, dry bulb temperature

Increases

Remains constant

Decreases

None of these

Increases

Remains constant

Decreases

None of these

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Refrigeration and Air Conditioning
In refrigerators, the temperature difference between the evaporating refrigerant and the medium being cooled should be

High, of the order of 25°

As low as possible (3 to 11°C)

Zero

Any value

High, of the order of 25°

As low as possible (3 to 11°C)

Zero

Any value

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Refrigeration and Air Conditioning
The COP of a domestic refrigerator

Is equal to 1

Is less than 1

Depends upon the make

Is more than 1

Is equal to 1

Is less than 1

Depends upon the make

Is more than 1

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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 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

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Refrigeration and Air Conditioning

Refrigeration and Air Conditioning The lower horizontal line of the refrigeration cycle plotted on pressure-enthalpy diagram represents

Refrigeration and Air Conditioning In mechanical refrigeration system, the refrigerant has the maximum temperature

Refrigeration and Air Conditioning During heating and dehumidification process, dry bulb temperature

Refrigeration and Air Conditioning In refrigerators, the temperature difference between the evaporating refrigerant and the medium being cooled should be

Refrigeration and Air Conditioning The COP of a domestic refrigerator

Refrigeration and Air Conditioning Degree of saturation or percentage humidity is

Refrigeration and Air Conditioning
The lower horizontal line of the refrigeration cycle plotted on pressure-enthalpy diagram represents

Refrigeration and Air Conditioning
In mechanical refrigeration system, the refrigerant has the maximum temperature

Refrigeration and Air Conditioning
During heating and dehumidification process, dry bulb temperature

Refrigeration and Air Conditioning
In refrigerators, the temperature difference between the evaporating refrigerant and the medium being cooled should be

Refrigeration and Air Conditioning
The COP of a domestic refrigerator

Refrigeration and Air Conditioning
Degree of saturation or percentage humidity is