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Process Equipment and Plant Design

Process Equipment and Plant Design
The dust collection efficiency of electrostatic precipitator increases with increase in the

Gas flow rate
Neither A nor B
Both A & B
Electrode area

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Process Equipment and Plant Design
In a shell and tube heat exchanger having square pitch, the shell side equivalent diameter is given by (where, P = pitch, d = outside diameter of the tube)

4(P² - πd²/4)/πd
Πd/4P²
(P² - πd²/4)/πd
4P²/πd

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Process Equipment and Plant Design
The wall thickness for a large high pressure pipeline is determined by the consideration of the

Temperature stresses
Circumferential pipewall tension
Forces exerted by static and dynamic action at bends
Axial tensile stress in the pipe

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Process Equipment and Plant Design
The longitudinal stress induced in a thin walled cylinderical vessel under internal pressure is

pd/4t
pd/2t
pd/t
pd/8t

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Process Equipment and Plant Design
Saddle supports are used for supporting __________ vessels.

Tall vertical
Thick walled vertical
Thick spherical
Horizontal cylinderical

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Process Equipment and Plant Design
Shortest distance between two tubes is

Called tube pitch
Called tube clearance
More in case of triangular pitch as compared to square pitch of tube layout
None of these

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