Liquid gradient over a tray can be minimised by

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

Providing a higher skirt clearance or a higher weir

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

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

All of these

Providing a higher skirt clearance or a higher weir

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

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

All of these

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Process Equipment and Plant Design
Back-trapping in a distillation column results due to

High gas velocity

Excessive liquid gradient over the tray

Low gas velocity

Low reflux ratio

High gas velocity

Excessive liquid gradient over the tray

Low gas velocity

Low reflux ratio

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Process Equipment and Plant Design
Pick out the wrong statement pertaining to a shell and tube heat exchanger.

The maximum value of baffle spacing is equal to the I.D. of the shell

Disk and doughnut baffle is the most commonly used baffle

The minimum value of baffle spacing is 50 mm

The maximum unsupported tube span is generally about 75 times tube diameter, but is reduced to about 60 times for aluminium, copper & alloys of these

The maximum value of baffle spacing is equal to the I.D. of the shell

Disk and doughnut baffle is the most commonly used baffle

The minimum value of baffle spacing is 50 mm

The maximum unsupported tube span is generally about 75 times tube diameter, but is reduced to about 60 times for aluminium, copper & alloys of these

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Process Equipment and Plant Design
Rivets are generally specified by the

Overall length

Head diameter

Shank diameter

None of these

Overall length

Head diameter

Shank diameter

None of these

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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.

600

1000

300

1500

600

1000

300

1500

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Process Equipment and Plant Design
In a multiple effect evaporator system having 'n' effects, the amount of water evaporated per unit surface area in approximately equal to __________ times that in a single effect.

1.5 nth

0.5 nth

(1/n)th

nth

1.5 nth

0.5 nth

(1/n)th

nth

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Process Equipment and Plant Design

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

Process Equipment and Plant Design Back-trapping in a distillation column results due to

Process Equipment and Plant Design Pick out the wrong statement pertaining to a shell and tube heat exchanger.

Process Equipment and Plant Design Rivets are generally specified by the

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 In a multiple effect evaporator system having 'n' effects, the amount of water evaporated per unit surface area in approximately equal to __________ times that in a single effect.

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

Process Equipment and Plant Design
Back-trapping in a distillation column results due to

Process Equipment and Plant Design
Pick out the wrong statement pertaining to a shell and tube heat exchanger.

Process Equipment and Plant Design
Rivets are generally specified by the

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
In a multiple effect evaporator system having 'n' effects, the amount of water evaporated per unit surface area in approximately equal to __________ times that in a single effect.