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Process Equipment and Plant Design

Process Equipment and Plant Design
Scale up problem in design based on the similarity concept takes into account __________ similarity.

Kinematic
Geometrical
All of these
Dynamic

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Process Equipment and Plant Design
The ends of a cylinderical vessel can be closed by a head, which can be one of the four shapes. For the same thickness, choose the one which can withstand the highest pressure.

Torispherical
Flat plate
Ellipsoidal
Hemispherical

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Process Equipment and Plant Design
A single pass air heater is connected to a two pass unit. For the air flow rate and other conditions remaining the same, the film heat transfer co-efficient for air will vary in the ratio of

2
None of these
20.8
20.2

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

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Process Equipment and Plant Design
A cylindrical storage tank can have a self supported conical roof,

If its diameter is less than 15-20metres
If its diameter is more than 50 meters
Irrespective of its diameter
If the thickness of the roof is more than that of the cylindrical shell

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Process Equipment and Plant Design
With increase in gas flow rate to fabric surface area ratio (Nm³/hr/m² fabric surface area), the size & the cost of a bag filter

Remain unaffected
Decreases
None of these
Increases

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