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Process Equipment and Plant Design

Process Equipment and Plant Design
A shell may by termed as thin if its thickness to diameter ratio is less than 0.1. The factor which can be neglected in the calculation of membrane stresses is

Elongation
Bending
Shear
Deformation

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Process Equipment and Plant Design
The design stress, which is more than the damaging stress, is the least unit stress that will render a member unfit for service before the end of its normal life. The design stress factor or factor of safety indicates the margin between design stress and the __________ stress.

Allowable
Damaging
Working
None of these

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Process Equipment and Plant Design
What is the minimum recommended ligament for square pitch arrangement in case of heat exchangers?

6.5 mm
Equal to tube I.D
Equal to tube O.D
6.5 cms

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

Modulus of elasticity
Bulk modulus
Modulus of rigidity
Shear modulus

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

25
75
10
300

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Process Equipment and Plant Design
Tubes are fixed to the tube sheet (a thick circular metallic plate) by the method of tube rolling and brazing (non-removable) or ferrule connection (removable). Thickness of the tube, sheet is normally __________ the outside diameter of the tube but in no case it should be less than 22 mm (7/8").

Equal to
Three fourth
Half
1.5 times

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