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Process Equipment and Plant Design

Process Equipment and Plant Design
Le/D for 90° elbow (medium radius) and 90°square elbow would be respectively around

100 and 250
25 and 60
250 and 600
3 and 5

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Process Equipment and Plant Design
The circumferential (hoop) stress in a thin walled cylinderical vessel under internal pressure is

pd/2t
pd/4t
pd/t
pd/3t

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

Plug flow
Complete back mixing
Laminar flow
Eddy diffusivity = 0

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Process Equipment and Plant Design
An underdesigned steam trap will

Back up condensate and cause water hammer in steam line
None of these
Waste steam
Destroy itself of acceleration wear due to rapid recycling

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Process Equipment and Plant Design
The shell side pressure drop in a shell and tube heat exchanger is maximum for __________ baffle.

Disk and ring
Segmental
Orifice
Independent of the type of

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Process Equipment and Plant Design
The units of Young's modulus of elasticity and __________ are the same.

Strain
Modular ratio
None of these
Stress

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