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Process Equipment and Plant Design

Process Equipment and Plant Design
Liquid/petroleum fuel storage tanks are built underground (as in case of petrol pumps), when the storage capacity is less than __________ kilolitres.

20
85
45
30

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Process Equipment and Plant Design
__________ liquor is best handled in a long tube vertical evaporator.

Salting
Foamy
Scaling
Viscous

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Process Equipment and Plant Design
Which of the following efficiencies can be greater than 100%?

Point efficiency
Murphree plate efficiency
None of these
Overall plate efficiency

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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

6 mm
10 mm
5 mm
8 mm

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Process Equipment and Plant Design
In a cylinderical vessel subjected to internal pressure, the longitudinal stress σL and the circumferential stress, σh are related by

σh = σL/2
σh = 2 σL
σh = σL
No relation exists

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Process Equipment and Plant Design
A pressure vessel is said to be made of 'thick' shell, if the ratio of its diameter to wall thickness is

10
20
10
20

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