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Process Equipment and Plant Design

Process Equipment and Plant Design
The equivalent diameter for fluid flow through a channel of constant non-circular cross section of area 'A' is given by (where, P = perimeter of the channel in contact with the fluid)

A/P
√A
4 P/A
4 A/P

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

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Process Equipment and Plant Design
Joint efficiency (J) for a seamless pipe is

0.85
1.2
< 0.5
1

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Process Equipment and Plant Design
Slope of countercurrent flow rotary drier is in the range of __________ meter/metre.

0 to 2.2
0 to 0.08
0 to 1.5
0 to 0.8

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Process Equipment and Plant Design
Lug support is meant for supporting __________ vessels.

Tall but empty
Large horizontal cylindrical
Thick walled tall
Small

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Process Equipment and Plant Design
In a double pipe concentric heat exchanger, the equivalent diameter of annulus for heat transfer would be (where, D₁ and D₂ are I.D. of inner and outer pipes)

(D₂² - D₁²)/D₂²
None of these
(D₂² - D₁²)/D₁²
D₂ - D₁

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