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Process Equipment and Plant Design

Process Equipment and Plant Design
Friction factor for turbulent flow in a new pipe is given by

f = 16/NRe
f = 0.04/NRe0.16
f = 0.22 NRe0.05
f = 25/NRe

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Process Equipment and Plant Design
What is the value of 'q' for saturated liquid feed to a distillation column?

1
>1

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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

10 mm
5 mm
8 mm
6 mm

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Process Equipment and Plant Design
In a rotary drier, the average retention time of solid is(where Z = length of the drier, metres ρ = apparent solid density, kg/m³ L = flow rate of dry solids, kg/see. m² drier cross-section H = hold up of solid.)

H.ρ/L
L/Z.H.ρ
Z.H.ρ/L
Z.H/L.ρ

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Process Equipment and Plant Design
Column support for the roof of cylindrical storage tank must be provided for

All of these
Small diameter tall tanks
Large diameter tanks
Small diameter tanks

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Process Equipment and Plant Design
Le/D for fully open globe value may be around

25
75
300
10

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