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Process Equipment and Plant Design

Process Equipment and Plant Design
The raio, (properller agitator dia/tank dia) is normally taken as

0.60-0.90
0.75-0.85
0.15-030
0.5-0.65

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Process Equipment and Plant Design
Which of the following factors affect the pressure drop in a co-current gas-liquid absorption packed tower?

All of these
Size, shape, orientation and surface of the packing particles
Fluid flow rates
Density and viscosity of fluids

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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.

Flat plate
Ellipsoidal
Torispherical
Hemispherical

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Process Equipment and Plant Design
For identical operating conditions, the pressure drop over __________ tray is the highest out of the following.

Counterflow
Bubble cap
Valve
Sieve

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Process Equipment and Plant Design
An increase in the liquid resistance to interphase mass transfer and a resultant reduction in plate efficiency is caused by

An increase in liquid viscosity
An increase in relatived volatility for rectification columns
All of these
Decrease in gas solubility for absorbers

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Process Equipment and Plant Design
Poisson's ratio of a material is the ratio of unit lateral strain to the unit axial elongation within its elastic limit. The value of Poisson's ratio for structural and pressure vessel steel may be taken as

0.75
0.95
0.01
0.3

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