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Process Equipment and Plant Design

Process Equipment and Plant Design
Value of Peclet number = 0, is the representative of

Complete back mixing
Laminar flow
Plug flow
Eddy diffusivity = 0

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Process Equipment and Plant Design
In hydrostatic testing of welded pipe (for leakage, strength etc.) the ratio of minimum hydrostatic test pressure to internal design pressure is around

2.5
3.5
1.5
0.5

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Process Equipment and Plant Design
The ratio of tube length to shell diameter in case of liquid shell and tube heat exchanger ranges from

4 to 8
2 to 3
6 to 12
3 to 5

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Process Equipment and Plant Design
The ratio of shear stress to shear strain is called

Modulus of rigidity
Shear modulus
Bulk modulus
Modulus of elasticity

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Process Equipment and Plant Design
The force due to wind load acting on a tall vessel depends upon its

Outside diameter
Height
Shape
All of these

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Process Equipment and Plant Design
A perforated plate has holes of diameter dh arranged in a pitch ph. Each hole has a tube of I.D. dt passing through it. The ligament efficiency is given by

(ph - dh . dt/2)/ph
(ph - dh)/dh
(ph - dh)/ph
(ph - dt)/ph

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