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Process Equipment and Plant Design

Process Equipment and Plant Design
Height of the flights in the rotary drier is in the range of

0.02 to 0.05 d
0.5 to 0.6 d
0.2 to 0.5 d
0.08 to 0.12 d

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Process Equipment and Plant Design
To keep the power input constant for a stirred vessel operating under fully developed turbulent flow conditions (constant power number), if the impeller diameter is increased by 20%, the impeller speed should be decreased by a factor of

(1.2)5/3
(1.2)2/3
(1.2)3/2
(1.2)3/5

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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.

>5
1.5 to 2
3 to 4
4 to 5

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Process Equipment and Plant Design
Diameter of the seive tray column is determined by the

Height of the plate spacing
Lower limit of vapour velocity
Upper limit of the vapour velocity
Hole diameter of the seive tray

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Process Equipment and Plant Design
The wall thickness of thin cylindrical shell with hemispherical ends is __________ that of the spherical ends.

Equal to
More than
Either B or C; depends on maximum permissible internal pressure
Less than

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Process Equipment and Plant Design
The safe distance of habitation from a hazardous chemical plant (TLV of its product < 1000 ppm) should be about __________ kms.

15
5
1
25

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