For a single component absorber, the operating line is straight only when plotted in term of __________ units.

Mass Transfer
For a single component absorber, the operating line is straight only when plotted in term of __________ units.

Mole ratio

Partial pressure

Mole fraction

None of these

Mole ratio

Partial pressure

Mole fraction

None of these

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Mass Transfer
The Kundsen diffusivity is proportional to (where, T = absolute temperature)

T⁴

T²

T

√T

T⁴

T²

T

√T

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Mass Transfer
The wet and 'dry bulb temperature for a vapour-gas mixture are 25°C and 30°C respectively. If the mixture is heated to 45°C at constant pressure, the wet bulb temperature will be __________ °C.

-25

> 25

< 25

25

-25

> 25

< 25

25

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Mass Transfer
With increase in the mass velocity of the gas, the rate of drying during the constant rate period __________ , if the conduction and radiation through the solid are negligible.

Remains same

Decreases

Increases linearly

Increases

Remains same

Decreases

Increases linearly

Increases

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Mass Transfer
Pick out the wrong statement pertaining to the rotary dryer.

Recommended peripherial speed of a rotary drier is in the range of 10 to 30 metres/minute

Rotary dryer is suitable for drying sticky material

Hold up of a rotary drier is defined as the fraction of the dryer volume occupied by the solid at any instant. The best performance for rotary drier is obtained, when the hold up is in the range of 0.

Flights (located in the inside shell of rotary dryer) lift the material being dried and shower it down through the current of hot air/gases. It extends from the wall to a distance which is about 8-12%

Recommended peripherial speed of a rotary drier is in the range of 10 to 30 metres/minute

Rotary dryer is suitable for drying sticky material

Hold up of a rotary drier is defined as the fraction of the dryer volume occupied by the solid at any instant. The best performance for rotary drier is obtained, when the hold up is in the range of 0.

Flights (located in the inside shell of rotary dryer) lift the material being dried and shower it down through the current of hot air/gases. It extends from the wall to a distance which is about 8-12%

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Mass Transfer
Heat in BTU necessary to increase the temperature of 1 lb of gas and its accompanying vapour by 1°F is called the

Sensible heat

Latent heat

Specific heat

Humid heat

Sensible heat

Latent heat

Specific heat

Humid heat

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Mass Transfer

Mass Transfer For a single component absorber, the operating line is straight only when plotted in term of __________ units.

Mass Transfer The Kundsen diffusivity is proportional to (where, T = absolute temperature)

Mass Transfer The wet and 'dry bulb temperature for a vapour-gas mixture are 25°C and 30°C respectively. If the mixture is heated to 45°C at constant pressure, the wet bulb temperature will be __________ °C.

Mass Transfer With increase in the mass velocity of the gas, the rate of drying during the constant rate period __________ , if the conduction and radiation through the solid are negligible.

Mass Transfer Pick out the wrong statement pertaining to the rotary dryer.

Mass Transfer Heat in BTU necessary to increase the temperature of 1 lb of gas and its accompanying vapour by 1°F is called the

Mass Transfer
For a single component absorber, the operating line is straight only when plotted in term of __________ units.

Mass Transfer
The Kundsen diffusivity is proportional to (where, T = absolute temperature)

Mass Transfer
The wet and 'dry bulb temperature for a vapour-gas mixture are 25°C and 30°C respectively. If the mixture is heated to 45°C at constant pressure, the wet bulb temperature will be __________ °C.

Mass Transfer
With increase in the mass velocity of the gas, the rate of drying during the constant rate period __________ , if the conduction and radiation through the solid are negligible.

Mass Transfer
Pick out the wrong statement pertaining to the rotary dryer.

Mass Transfer
Heat in BTU necessary to increase the temperature of 1 lb of gas and its accompanying vapour by 1°F is called the