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Process Equipment and Plant Design

Process Equipment and Plant Design
The retention time of material in a rotary dryer depends upon its

All of these
Rpm
Flights arrangement
Slope & length

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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
Z.H.ρ/L
L/Z.H.ρ
Z.H/L.ρ

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Process Equipment and Plant Design
For high pressure process equipments/vessels, the connected nozzle should be

Welded
Flanged
Screwed
Brazed

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Process Equipment and Plant Design
In the agitators, the power required will be changed with the increase of diameter of agitator (D) as

D⁹
D²
D⁵
D

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Process Equipment and Plant Design
A rivetted joint does not fail by __________ of rivets.

Shearing
Tearing
None of these
Tearing of the plate across a row

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Process Equipment and Plant Design
Where does the maximum tensile strength occur in a thick cylindrical vessel subjected to internal pressure?

At the inner surface
At the outer surface
At the mid thickness of the cylindrical wall
None of these

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