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Process Equipment and Plant Design

Process Equipment and Plant Design
Heat transfer co-efficient for a horizontal condenser as compared to a vertical condenser operating under similar conditions is

About 0.33 times
Less
About 3 times
Same

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

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Process Equipment and Plant Design
The ratio of lateral strain to linear strain is termed as the

Bulk modulus
Poisson's ratio
Modulus of elasticity
Shear modulus

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Process Equipment and Plant Design
In case of a continuous distillation column, increase in reflux ratio may result in the

Greater cost for the condenser coolant
All of these
Greater cost for the reboiler heat supply
Lower fixed charges for the column

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Process Equipment and Plant Design
In the downcomer of a distillation column, the minimum recommended residence time is about __________ seconds.

12.5
2.5
17.5
5

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Process Equipment and Plant Design
A 'rupture disc' is provided in chemical equipments as an accessory meant for

Creating turbulence
Enhancing mixing rate
Avoiding vortex formation
Relieving excess pressure

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