The wet bulb temperature at 100% relative humidity is___ dry bulb temperature.

Refrigeration and Air Conditioning
The wet bulb temperature at 100% relative humidity is___ dry bulb temperature.

Higher than

None of the listed here

Same as

Lower than

Higher than

None of the listed here

Same as

Lower than

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Refrigeration and Air Conditioning
Nusselt number (NN) is given by

NN = V²/t.cp

NN = μ cp/k

NN = hl/k

NN = ρ V l /μ

NN = V²/t.cp

NN = μ cp/k

NN = hl/k

NN = ρ V l /μ

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Refrigeration and Air Conditioning
For evaporators and condensers, for the given conditions, the logarithmic mean temperature difference (tm) for parallel flow is ________ that for counter flow.

None of these

Less than

Equal to

Greater than

None of these

Less than

Equal to

Greater than

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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 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

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

Same

Very low

Low

High

Same

Very low

Low

High

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Refrigeration and Air Conditioning
The temperature of air recorded by a thermometer, when its bulb is surrounded by a wet cloth exposed to the air, is called

Dry bulb temperature

Wet bulb temperature

None of these

Dew point temperature

Dry bulb temperature

Wet bulb temperature

None of these

Dew point temperature

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Refrigeration and Air Conditioning

Refrigeration and Air Conditioning The wet bulb temperature at 100% relative humidity is___ dry bulb temperature.

Refrigeration and Air Conditioning Nusselt number (NN) is given by

Refrigeration and Air Conditioning For evaporators and condensers, for the given conditions, the logarithmic mean temperature difference (tm) for parallel flow is ________ that for counter flow.

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 temperature of air recorded by a thermometer, when its bulb is surrounded by a wet cloth exposed to the air, is called

Refrigeration and Air Conditioning
The wet bulb temperature at 100% relative humidity is___ dry bulb temperature.

Refrigeration and Air Conditioning
Nusselt number (NN) is given by

Refrigeration and Air Conditioning
For evaporators and condensers, for the given conditions, the logarithmic mean temperature difference (tm) for parallel flow is ________ that for counter flow.

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 temperature of air recorded by a thermometer, when its bulb is surrounded by a wet cloth exposed to the air, is called