Overall mass transfer co-efficient in case of absorption of __________ in water is based on the gas film co-efficient only, as the mass transfer process is gas film (phase) controlling.

Process Equipment and Plant Design
Overall mass transfer co-efficient in case of absorption of __________ in water is based on the gas film co-efficient only, as the mass transfer process is gas film (phase) controlling.

None of these

SO₂

NH₃

CO₂

None of these

SO₂

NH₃

CO₂

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Process Equipment and Plant Design
Liquid gradient over a tray can be minimised by

Providing a higher skirt clearance or a higher weir

All of these

Decreasing the number of rows of caps through which the liquid flows or by decreasing the velocity of liquid flow past the caps or by reducing the distance along the tray through which the liquid must

Using split flow, radial flow or cascade flow for column diameter large than 4 ft

Providing a higher skirt clearance or a higher weir

All of these

Decreasing the number of rows of caps through which the liquid flows or by decreasing the velocity of liquid flow past the caps or by reducing the distance along the tray through which the liquid must

Using split flow, radial flow or cascade flow for column diameter large than 4 ft

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Process Equipment and Plant Design
The design stress, which is more than the damaging stress, is the least unit stress that will render a member unfit for service before the end of its normal life. The design stress factor or factor of safety indicates the margin between design stress and the __________ stress.

Damaging

Working

None of these

Allowable

Damaging

Working

None of these

Allowable

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Process Equipment and Plant Design
The stress developed in a material without any permanent set is called the

Ultimate stress

Elastic limit

Breaking stress

Yield stress

Ultimate stress

Elastic limit

Breaking stress

Yield stress

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Process Equipment and Plant Design
The dust collection efficiency of electrostatic precipitator increases with increase in the

Gas flow rate

Electrode area

Neither A nor B

Both A & B

Gas flow rate

Electrode area

Neither A nor B

Both A & B

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Process Equipment and Plant Design
In a shell and tube heat exchanger having triangular pitch, the shell side equivalent diameter is given by

4(0.86p² - πd²)/πd

(4p² - πd²/4)/πd

(p² - πd²/4)/πd

4(0.86p² - πd²/4)/πd

4(0.86p² - πd²)/πd

(4p² - πd²/4)/πd

(p² - πd²/4)/πd

4(0.86p² - πd²/4)/πd

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Process Equipment and Plant Design

Process Equipment and Plant Design Overall mass transfer co-efficient in case of absorption of __________ in water is based on the gas film co-efficient only, as the mass transfer process is gas film (phase) controlling.

Process Equipment and Plant Design Liquid gradient over a tray can be minimised by

Process Equipment and Plant Design The stress developed in a material without any permanent set is called the

Process Equipment and Plant Design The dust collection efficiency of electrostatic precipitator increases with increase in the

Process Equipment and Plant Design In a shell and tube heat exchanger having triangular pitch, the shell side equivalent diameter is given by

Process Equipment and Plant Design
Overall mass transfer co-efficient in case of absorption of __________ in water is based on the gas film co-efficient only, as the mass transfer process is gas film (phase) controlling.

Process Equipment and Plant Design
Liquid gradient over a tray can be minimised by

Process Equipment and Plant Design
The stress developed in a material without any permanent set is called the

Process Equipment and Plant Design
The dust collection efficiency of electrostatic precipitator increases with increase in the

Process Equipment and Plant Design
In a shell and tube heat exchanger having triangular pitch, the shell side equivalent diameter is given by