Lessing ring is formed by the addition of a partition across the centre of a raschig ring, which results in an area increase of about __________ percent.

Process Equipment and Plant Design
Lessing ring is formed by the addition of a partition across the centre of a raschig ring, which results in an area increase of about __________ percent.

5

20

55

35

5

20

55

35

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Process Equipment and Plant Design
Pick out the wrong statement pertaining to the design of a horizontal tube evaporator.

Liquor flows inside the tube, while the steam is outside submerging the tube

It is suitable for process, in which the final product is a liquor instead of solid

It is unsuitable for concentrating those liquids, which form a scale or deposit salt

Its usual dimensions are: tube dia = 2-3 cms; evaporator body dia = 1-4 metres and evaporator height = 2.5-4 metres

Liquor flows inside the tube, while the steam is outside submerging the tube

It is suitable for process, in which the final product is a liquor instead of solid

It is unsuitable for concentrating those liquids, which form a scale or deposit salt

Its usual dimensions are: tube dia = 2-3 cms; evaporator body dia = 1-4 metres and evaporator height = 2.5-4 metres

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Process Equipment and Plant Design
In chemical process equipments, the conical bottom heads used, usually has an apex angle of

60°

80°

40°

20°

60°

80°

40°

20°

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Process Equipment and Plant Design
In a distillation column, bubble caps are located on trays with a pitch of __________ times the outside diameter of the caps.

1.3 to 2

1.5 to 3

2.5

1.6 to 2

1.3 to 2

1.5 to 3

2.5

1.6 to 2

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Process Equipment and Plant Design
For pipe flows, head is proportional to __________ at constant capacity (where D = pipe diameter ).

D²

1/D

1/D²

1/D⁵

D²

1/D

1/D²

1/D⁵

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Process Equipment and Plant Design
The value of fouling factor depends upon the

Characteristic of process fluid

Velocity of process fluid containing suspended solids

All of these

Suspended solids in the fluid

Characteristic of process fluid

Velocity of process fluid containing suspended solids

All of these

Suspended solids in the fluid

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Process Equipment and Plant Design

Process Equipment and Plant Design Lessing ring is formed by the addition of a partition across the centre of a raschig ring, which results in an area increase of about __________ percent.

Process Equipment and Plant Design Pick out the wrong statement pertaining to the design of a horizontal tube evaporator.

Process Equipment and Plant Design In chemical process equipments, the conical bottom heads used, usually has an apex angle of

Process Equipment and Plant Design In a distillation column, bubble caps are located on trays with a pitch of __________ times the outside diameter of the caps.

Process Equipment and Plant Design For pipe flows, head is proportional to __________ at constant capacity (where D = pipe diameter ).

Process Equipment and Plant Design The value of fouling factor depends upon the

Process Equipment and Plant Design
Lessing ring is formed by the addition of a partition across the centre of a raschig ring, which results in an area increase of about __________ percent.

Process Equipment and Plant Design
Pick out the wrong statement pertaining to the design of a horizontal tube evaporator.

Process Equipment and Plant Design
In chemical process equipments, the conical bottom heads used, usually has an apex angle of

Process Equipment and Plant Design
In a distillation column, bubble caps are located on trays with a pitch of __________ times the outside diameter of the caps.

Process Equipment and Plant Design
For pipe flows, head is proportional to __________ at constant capacity (where D = pipe diameter ).

Process Equipment and Plant Design
The value of fouling factor depends upon the