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Process Equipment and Plant Design

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

Bubble cap
Valve
Counterflow
Sieve

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Process Equipment and Plant Design
Le/D for 90° elbow (medium radius) and 90°square elbow would be respectively around

3 and 5
25 and 60
250 and 600
100 and 250

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Process Equipment and Plant Design
__________ shapedroof is the most commonly used roof for cylinderical storage tanks.

Umbrella
Dome
Conical
Flat

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Process Equipment and Plant Design
In most of the shell and tube heat exchangers, the tube pitch is generally __________ the tube diameter.

1.25-1.50 times
2.5 times
Less than
One-fourth of

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Process Equipment and Plant Design
With increase in the reflux ratio for a fixed production from a continuous binary distillation column, the __________ decreases.

Vapour & liquid load both
Running cost of cooling water for condenser
Fixed charges initially
Running cost of steam for reboiler

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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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