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Process Equipment and Plant Design

Process Equipment and Plant Design
Brass valves are usually made for pipe sizes __________ inches.

?1
?2
>3.5
>2.5

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Process Equipment and Plant Design
Stage efficiency for packed tower varies with the

All of these
Type & size of packing
Fluid rates and fluid properties
Operating pressure and column diameter

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Process Equipment and Plant Design
A perforated plate has holes of diameter dh arranged in a pitch ph. Each hole has a tube of I.D. dt passing through it. The ligament efficiency is given by

(ph - dh . dt/2)/ph
(ph - dh)/dh
(ph - dh)/ph
(ph - dt)/ph

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Process Equipment and Plant Design
Fresh water carrying pipelines in chemical industries are coloured with __________ color.

Red
Brown
Sea green
Yellow

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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.

Sieve
Valve
Bubble cap
Counterflow

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Process Equipment and Plant Design
Generally, as the length of the liquid path on a tray is increased beyond 5 ft, the overall column efficiency

Decreases
May increase or decrease depending upon the plate spacing
Remains same
Increases

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