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Process Equipment and Plant Design

Process Equipment and Plant Design
At equal mass velocities, the values of film co-efficients for gases as compared to that for liquids are generally.

Unpredictable
Lower
Same
Higher

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Process Equipment and Plant Design
In a __________ rivetted joint, the rivets in the various rows are opposite to each other.

Diamond
Zig-zag
Chain
None of these

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

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Process Equipment and Plant Design
In actual operation of a bubble cap distillation tower, the __________ at the bottom of the tower is more than that at the top of the tower.

Vapour molecular weight
Pressure and temperature
Molal flow rate of vapour
All of these

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Process Equipment and Plant Design
The testing pressure of storage tanks and pressure vessels designed as per Indian standard codes should be about __________ times.the design pressure.

1.5 to 2
3 to 4
>5
4 to 5

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Process Equipment and Plant Design
Rotary driers are most economically designed for the number of heat transfer units (HTU) from

1.5 to 2.5
10 to 20
5 to 10
0.01 to 1

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