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Process Equipment and Plant Design

Process Equipment and Plant Design
Friction factor for turbulent flow in a new pipe is given by

f = 0.22 NRe0.05
f = 16/NRe
f = 25/NRe
f = 0.04/NRe0.16

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Process Equipment and Plant Design
Which of the following material is seldom used for pressure vessel construction?

Rimmed still
Semi-killed steel
Killed steel
Mild steel

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

0.8
0.5
0.25
0.1

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

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Process Equipment and Plant Design
In chemical process equipments, the conical bottom heads used, usually has an apex angle of

60°
40°
20°
80°

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Process Equipment and Plant Design
In the design of a bag filter, the gas temperature is an important consideration, as it affects the

Gas viscosity
All of these
Fibre selection
Gas density

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