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Process Equipment and Plant Design

Process Equipment and Plant Design
In the design of a paddle agitator, the ratio (paddle dia/tank dia) is normally taken as

0.1
0.8
0.25
0.5

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Process Equipment and Plant Design
1.2 to 3.8 cms is the value of the

Downcomer liquid seal in case of a balanced tray design
All of these
Skirt clearance for bubble caps
Static submergence in case of a bubble cap tray for column operating under pressure (≥ 1 atm.)

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Process Equipment and Plant Design
Equivalent diameter for heat transfer calculation for a duct of square cross-section having each side as 'd' will be

D
√(2d)
√(2πd)
√d

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Process Equipment and Plant Design
The retention time of material in a rotary dryer depends upon its

Slope & length
All of these
Rpm
Flights arrangement

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Process Equipment and Plant Design
Nominal size of a pipe is an indication of its __________ diameter.

Outer
None of these
Approximate
Inner

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Process Equipment and Plant Design
The normal range of velocity of steam in pipes is __________ m/sec.

10-20
0.1-0.5
80-100
1-5

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