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Process Equipment and Plant Design

Process Equipment and Plant Design
Low pressure steam (with saturation temperature between 105 to 120°C) is usually used in the vacuum evaporators, which normally employ a vacuum of about __________ mm Hg (referred to a 760 mm mercury barometer).

650
450
250
750

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Process Equipment and Plant Design
Excessive liquid gradient on a tray may result in the

All of these
Gas blowing beneath cap skit
Maldistribution of gas
Back trapping

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

Neither A nor B
Electrode area
Both A & B
Gas flow rate

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Process Equipment and Plant Design
Minimum tube pitch recommended for shell and tube heat exchangers is about __________ times the outside diameter of the tube.

1.25
2.5
3.5
1.75

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Process Equipment and Plant Design
Longitundinal stress induced in a thin walled cylindrical storage vessel is

PD/3t
PD/2t
PD/6t
PD/4t

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Process Equipment and Plant Design
Accidents in chemical plants are mostly due to

Inadequate equipment design
Faulty operating procedures
Improper layout of the equipments
Failure of equipments

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