Elastic failure of a material occurs, when the tensile stress equals yield strength, yield point or the elastic limit. Also, the elastic failure occurs according to maximum strain theory, when the maximum tensile strain equals (where, σ = yield strength and E = modulus of elasticity)

Process Equipment and Plant Design
Elastic failure of a material occurs, when the tensile stress equals yield strength, yield point or the elastic limit. Also, the elastic failure occurs according to maximum strain theory, when the maximum tensile strain equals (where, σ = yield strength and E = modulus of elasticity)

Σ/E

Σ

E/σ

E

Σ/E

Σ

E/σ

E

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Process Equipment and Plant Design
Circumferential (hoop) stress in a thin cylindrical vessel under internal pressure is __________ the longitudinal stress.

Eight times

Equal to

Twice

Half

Eight times

Equal to

Twice

Half

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Process Equipment and Plant Design
In a shell and tube heat exchanger, the clearance of the tube is generally

Not less than one-fourth of the tube diameter or 3/16"

More in case of triangular pitch as compared to the square pitch tube layout

Equal to the tube diameter

More than the tube diameter

Not less than one-fourth of the tube diameter or 3/16"

More in case of triangular pitch as compared to the square pitch tube layout

Equal to the tube diameter

More than the tube diameter

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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

0.5

1.5

2.5

3.5

0.5

1.5

2.5

3.5

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Process Equipment and Plant Design
Apex angle of conical heads used in the bottom heads of chemical process equipments is usually

45°

75°

30°

60°

45°

75°

30°

60°

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Process Equipment and Plant Design
Maximum allowable vapour velocity in a bubble cap tower is determined by the

Entrainment considerations

None of these

Vapour density

Diameter of the column

Entrainment considerations

None of these

Vapour density

Diameter of the column

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Process Equipment and Plant Design

Process Equipment and Plant Design Circumferential (hoop) stress in a thin cylindrical vessel under internal pressure is __________ the longitudinal stress.

Process Equipment and Plant Design In a shell and tube heat exchanger, the clearance of the tube is generally

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

Process Equipment and Plant Design Apex angle of conical heads used in the bottom heads of chemical process equipments is usually

Process Equipment and Plant Design Maximum allowable vapour velocity in a bubble cap tower is determined by the

Process Equipment and Plant Design
Circumferential (hoop) stress in a thin cylindrical vessel under internal pressure is __________ the longitudinal stress.

Process Equipment and Plant Design
In a shell and tube heat exchanger, the clearance of the tube is generally

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

Process Equipment and Plant Design
Apex angle of conical heads used in the bottom heads of chemical process equipments is usually

Process Equipment and Plant Design
Maximum allowable vapour velocity in a bubble cap tower is determined by the