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Process Equipment and Plant Design

Process Equipment and Plant Design
Welded joint efficiency in the design of chemical process equipment is taken as

0.75
0.55
0.85
0.95

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Process Equipment and Plant Design
An underdesigned steam trap will

None of these
Waste steam
Back up condensate and cause water hammer in steam line
Destroy itself of acceleration wear due to rapid recycling

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Process Equipment and Plant Design
The ends of a cylinderical vessel can be closed by a head, which can be one of the four shapes. For the same thickness, choose the one which can withstand the highest pressure.

Torispherical
Ellipsoidal
Hemispherical
Flat plate

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Process Equipment and Plant Design
Height of the flights in the rotary drier is in the range of

0.5 to 0.6 d
0.02 to 0.05 d
0.08 to 0.12 d
0.2 to 0.5 d

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Process Equipment and Plant Design
In a shell and tube heat exchanger, tube side __________ of the mass velocity.

Both A & B
Neither A nor B
Heat transfer co-efficient is proportional to 0.8th power
Pressure drop is proportional to the square

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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
80
60
45

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