The LMTD correction factor (FT) is applied in __________ heat exchangers.

Process Equipment and Plant Design
The LMTD correction factor (FT) is applied in __________ heat exchangers.

All multipass

Double pipe

1-1 cocurrent

All of these

All multipass

Double pipe

1-1 cocurrent

All of these

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

Low reflux ratio

High gas velocity

Low gas velocity

Excessive liquid gradient over the tray

Low reflux ratio

High gas velocity

Low gas velocity

Excessive liquid gradient over the tray

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Process Equipment and Plant Design
The function of manholes provided in the shell of a distillation column is to

Give access to the individual trays for cleaning, maintenance and installation

All of these

Guard against foaming & entrainment by dumping antifoaming agent through it

Keep a check on the liquid gradient over the plate by direct visual observation

Give access to the individual trays for cleaning, maintenance and installation

All of these

Guard against foaming & entrainment by dumping antifoaming agent through it

Keep a check on the liquid gradient over the plate by direct visual observation

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Process Equipment and Plant Design
Large process vessels operating under extreme temperature and pressure conditions are normally clad/ lined with materials like stainless steel, aluminium, nickel & its alloys, copper & its alloys and titanium. The cladding thickness is generally about __________ percent of the total thickness.

40 to 50

30 to 40

1 to 5

10 to 20

40 to 50

30 to 40

1 to 5

10 to 20

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

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

All of these

Providing a higher skirt clearance or a higher weir

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

All of these

Providing a higher skirt clearance or a higher weir

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Process Equipment and Plant Design
The wall thickness of thin cylindrical shell with hemispherical ends is __________ that of the spherical ends.

More than

Less than

Equal to

Either B or C; depends on maximum permissible internal pressure

More than

Less than

Equal to

Either B or C; depends on maximum permissible internal pressure

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Process Equipment and Plant Design

Process Equipment and Plant Design The LMTD correction factor (FT) is applied in __________ heat exchangers.

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

Process Equipment and Plant Design The function of manholes provided in the shell of a distillation column is to

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

Process Equipment and Plant Design The wall thickness of thin cylindrical shell with hemispherical ends is __________ that of the spherical ends.

Process Equipment and Plant Design
The LMTD correction factor (FT) is applied in __________ heat exchangers.

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

Process Equipment and Plant Design
The function of manholes provided in the shell of a distillation column is to

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

Process Equipment and Plant Design
The wall thickness of thin cylindrical shell with hemispherical ends is __________ that of the spherical ends.