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Process Equipment and Plant Design

Process Equipment and Plant Design
A high vapour velocity is required for high plate efficiency in a seive plate coloumn. The satisfactory value of operating vapor velocity for design purpose in seive plate column is about __________ percent of the flooding velocity.

95
60
80
45

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Process Equipment and Plant Design
Steam is preferred to be used as a heating medium in heat exchangers, because of its

Non-corrosive condensate
Low cost
High latent heat
High film co-efficient

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Process Equipment and Plant Design
The slope of operating line in the rectifying section of a distillation column is unity, if the reflux ratio is

1
Minimum
∞
0

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Process Equipment and Plant Design
The ratio of lateral strain to linear strain is termed as the

Bulk modulus
Modulus of elasticity
Poisson's ratio
Shear modulus

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Process Equipment and Plant Design
A 'rupture disc' is provided in chemical equipments as an accessory meant for

Avoiding vortex formation
Relieving excess pressure
Enhancing mixing rate
Creating turbulence

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Process Equipment and Plant Design
In seive plate column, holes are drilled or punched in sizes ranging from 2.5 to 12 mm (5 mm being widely used). The hole pitch is normally __________ times the hole diameter to give the required hole area.

2.5 to 4.0
10 to 15
0.5 to 1.5
5 to 10

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