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Process Equipment and Plant Design

Process Equipment and Plant Design
Value of Peclet number = 0, is the representative of

Plug flow
Complete back mixing
Eddy diffusivity = 0
Laminar flow

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Process Equipment and Plant Design
In chemical process equipments, the conical bottom heads used, usually has an apex angle of

40°
60°
20°
80°

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Process Equipment and Plant Design
A cylinderical pressure vessel of volume 6 πm³ has to be designed to withstand a maximum internal pressure of 10 atm. The allowable design stress of the material is 125N/mm² and corrosion allowance is 2 mm. The thickness of the vessel for a length/diameter ratio of 3 will be close to

8 mm
5 mm
10 mm
6 mm

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Process Equipment and Plant Design
The normal range of velocity of water in pipes is __________ m/sec.

10-50
1-2
15-30
0.1-0.5

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Process Equipment and Plant Design
If a single tube pass heat exchanger is converted to two passes; for the same flow rate, the pressure drop per unit length in tube side will __________ times.

Increase by 21.6
Increase by 1.8
Decrease by 22
None of these

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Process Equipment and Plant Design
Most of the storage vessels/tanks are made cylindrical, because of the fact that a cylinder

Neither A nor B
Both A & B
Has greater structural strength
Is easy to fabricate

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