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Process Equipment and Plant Design

Process Equipment and Plant Design
Steam side heat transfer co-efficient for design consideration under ordinary condition can be assumed to be about __________ kcal/hr.m².°C.

15000
2500
1250
7500

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Process Equipment and Plant Design
for couplings and unions would be

Negligible
200
60
350

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Process Equipment and Plant Design
Cylinderical shell thickness of rotary drier is generally __________ mm.

43990
44180
43864
18-22

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Process Equipment and Plant Design
In most of the shell and tube heat exchangers, the tube pitch is generally __________ the tube diameter.

Less than
One-fourth of
2.5 times
1.25-1.50 times

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Process Equipment and Plant Design
The distance between the centre of a rivet hole to the nearest edge of the plate is called

Margin
Pitch
Back pitch
None of these

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

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