An increase in the liquid resistance to interphase mass transfer and a resultant reduction in plate efficiency is caused by

Process Equipment and Plant Design
An increase in the liquid resistance to interphase mass transfer and a resultant reduction in plate efficiency is caused by

An increase in liquid viscosity

An increase in relatived volatility for rectification columns

All of these

Decrease in gas solubility for absorbers

An increase in liquid viscosity

An increase in relatived volatility for rectification columns

All of these

Decrease in gas solubility for absorbers

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Process Equipment and Plant Design
In packed towers provided with pall rings liquid redistributors are positioned at heights of every 6 metres or 5-10 times the column diameter, whichever is less. Maximum size of the pall rings should not exceed __________ of the column diameter.

1/2 to 1/4th

1/20-1/30th

1/5-1/10th

1/10-1/15th

1/2 to 1/4th

1/20-1/30th

1/5-1/10th

1/10-1/15th

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Process Equipment and Plant Design
With increase in temperature drop (in a shell and tube heat exchanger), the LMTD correction factor, FT

Increases very rapidly

Increases linearly

Decreases very rapidly

Remains constant

Increases very rapidly

Increases linearly

Decreases very rapidly

Remains constant

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Process Equipment and Plant Design
The distance between the centre of a rivet hole to the nearest edge of the plate is called

Pitch

Back pitch

None of these

Margin

Pitch

Back pitch

None of these

Margin

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Process Equipment and Plant Design
Angled baffles are preferred in the agitation tank to control the swirling action; if the viscosity of the liquid to be mixed is about 200 poise. However, the baffle may be completely eliminated for mixing liquids having viscoisty above __________ poise.

1000

600

300

1500

1000

600

300

1500

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Process Equipment and Plant Design
The minimum shell thickness for tank ≤ 15 metres diameter is limited to __________ mm, for reasons of elastic stability.

15

5

2

10

15

5

2

10

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Process Equipment and Plant Design

Process Equipment and Plant Design An increase in the liquid resistance to interphase mass transfer and a resultant reduction in plate efficiency is caused by

Process Equipment and Plant Design In packed towers provided with pall rings liquid redistributors are positioned at heights of every 6 metres or 5-10 times the column diameter, whichever is less. Maximum size of the pall rings should not exceed __________ of the column diameter.

Process Equipment and Plant Design With increase in temperature drop (in a shell and tube heat exchanger), the LMTD correction factor, FT

Process Equipment and Plant Design The distance between the centre of a rivet hole to the nearest edge of the plate is called

Process Equipment and Plant Design Angled baffles are preferred in the agitation tank to control the swirling action; if the viscosity of the liquid to be mixed is about 200 poise. However, the baffle may be completely eliminated for mixing liquids having viscoisty above __________ poise.

Process Equipment and Plant Design The minimum shell thickness for tank ≤ 15 metres diameter is limited to __________ mm, for reasons of elastic stability.

Process Equipment and Plant Design
An increase in the liquid resistance to interphase mass transfer and a resultant reduction in plate efficiency is caused by

Process Equipment and Plant Design
In packed towers provided with pall rings liquid redistributors are positioned at heights of every 6 metres or 5-10 times the column diameter, whichever is less. Maximum size of the pall rings should not exceed __________ of the column diameter.

Process Equipment and Plant Design
With increase in temperature drop (in a shell and tube heat exchanger), the LMTD correction factor, FT

Process Equipment and Plant Design
The distance between the centre of a rivet hole to the nearest edge of the plate is called

Process Equipment and Plant Design
Angled baffles are preferred in the agitation tank to control the swirling action; if the viscosity of the liquid to be mixed is about 200 poise. However, the baffle may be completely eliminated for mixing liquids having viscoisty above __________ poise.

Process Equipment and Plant Design
The minimum shell thickness for tank ≤ 15 metres diameter is limited to __________ mm, for reasons of elastic stability.