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Process Equipment and Plant Design

Process Equipment and Plant Design
Which of the following is the best tube material from thermal conductivity point of view alone?

Carbon steel
Stainless steel
Aluminium
Copper

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Process Equipment and Plant Design
Maximum plate efficiency is achieved in case of __________ flow.

Cascade
Reverse
Cross
Split

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Process Equipment and Plant Design
__________ head is the most economical for cylindrical vessels designed for operating at high pressure (> 15 atm.).

Ellipsoidal
Hemispherical
Conical
Dished

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

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Process Equipment and Plant Design
__________ strain is measured using a 'strain rosetter'.

Volumetric
None of these
Shear
Linear

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Process Equipment and Plant Design
In a shell and tube heat exchanger, the overall heat transfer co-efficient is proportional to the tube side (volumetric flow rate)0.8. This is valid, only when the ratio of the tube side film resistance to the total resistance is almost equal to

1
2
∞
20.8

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