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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.

30
20
85
45

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Process Equipment and Plant Design
Rivets are generally specified by the

Overall length
Shank diameter
Head diameter
None of these

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Process Equipment and Plant Design
Safety valves are provided in chemical equipments to guard against excessive

Noise
Pressure/pressure fluctuation
Turbulence
Temperature

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

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Process Equipment and Plant Design
Pressure drop due to pipe fittings can be estimated by the equation, ΔP/p = 4f.Le/D.V2/2gc, where, Le = equivalent length of straight pipeline which will incur the same frictional loss as the fitting and D = diameter of the fitting. The value of Le/D (dimensionless) for 45° elbow and 180° close return bends would be respectively around

45 and 75
180 and 300
300 and 500
5 and 10

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

Dynamic
Geometrical
Kinematic
All of these

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