The refrigerant for a refrigerator should have

Refrigeration and Air Conditioning
The refrigerant for a refrigerator should have

High latent heat

Low latent heat

High total heat

High sensible heat

High latent heat

Low latent heat

High total heat

High sensible heat

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Refrigeration and Air Conditioning
In vapour compression refrigeration system, refrigerant occurs as liquid between

Compressor and evaporator

Condenser and expansion valve

Compressor and condenser

Expansion valve and evaporator

Compressor and evaporator

Condenser and expansion valve

Compressor and condenser

Expansion valve and evaporator

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Refrigeration and Air Conditioning
If a heat pump cycle operates between the condenser temperature of +27°C and evaporator temperature of -23°C, then the Carnot COP will be

1.2

5

6

0.2

1.2

5

6

0.2

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Refrigeration and Air Conditioning
Superheating in a refrigeration cycle

Increases C.O.P

Decreases C.O.P

O.P remains unaltered

Other factors decide C.O.P

Increases C.O.P

Decreases C.O.P

O.P remains unaltered

Other factors decide C.O.P

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Refrigeration and Air Conditioning
The relative humidity is defined as

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 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 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 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 mass of water vapour present in 1 kg of dry air

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Refrigeration and Air Conditioning
The emissivity of a polished silver body is ____ as compared to black body.

Low

High

Very low

Same

Low

High

Very low

Same

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Refrigeration and Air Conditioning

Refrigeration and Air Conditioning The refrigerant for a refrigerator should have

Refrigeration and Air Conditioning In vapour compression refrigeration system, refrigerant occurs as liquid between

Refrigeration and Air Conditioning If a heat pump cycle operates between the condenser temperature of +27°C and evaporator temperature of -23°C, then the Carnot COP will be

Refrigeration and Air Conditioning Superheating in a refrigeration cycle

Refrigeration and Air Conditioning The relative humidity is defined as

Refrigeration and Air Conditioning The emissivity of a polished silver body is ____ as compared to black body.

Refrigeration and Air Conditioning
The refrigerant for a refrigerator should have

Refrigeration and Air Conditioning
In vapour compression refrigeration system, refrigerant occurs as liquid between

Refrigeration and Air Conditioning
If a heat pump cycle operates between the condenser temperature of +27°C and evaporator temperature of -23°C, then the Carnot COP will be

Refrigeration and Air Conditioning
Superheating in a refrigeration cycle

Refrigeration and Air Conditioning
The relative humidity is defined as

Refrigeration and Air Conditioning
The emissivity of a polished silver body is ____ as compared to black body.