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

E/σ

Σ/E

Σ

E

E/σ

Σ/E

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Process Equipment and Plant Design
Generally, as the length of the liquid path on a tray is increased beyond 5 ft, the overall column efficiency

May increase or decrease depending upon the plate spacing

Decreases

Increases

Remains same

May increase or decrease depending upon the plate spacing

Decreases

Increases

Remains same

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Process Equipment and Plant Design
In a shell and tube heat exchanger for a given heat transfer surface area, smaller diameter tubes are favoured as compared to larger diameter ones ; because the smaller diameter tubes

None of these

Can be fitted into a smaller shell diameter hence the cost of the heat exchanger would be less

Are less prone to fouling

Are easier to clean

None of these

Can be fitted into a smaller shell diameter hence the cost of the heat exchanger would be less

Are less prone to fouling

Are easier to clean

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Process Equipment and Plant Design
The operating velocity in the absorption tower is usually 40-50% of the flooding velocity. Packed absorption towers are normally designed for a pressure drop of about __________ mm of water column per metre height of packing.

43835

20-40

1000-1500

100-150

43835

20-40

1000-1500

100-150

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Process Equipment and Plant Design
Width and depth of grooves in the tube sheet holes normally are __________ inch respectively.

1/64 and 1/8

1/8 and 1/64

1/2 and 8

1/2 and 5

1/64 and 1/8

1/8 and 1/64

1/2 and 8

1/2 and 5

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Process Equipment and Plant Design
Which of the following is used to set the diameter of the distillation column?

Allowable vapour velocity

Number of theorectical plates

Static submergence

Length of straight rectangular weir on cross-flow tray

Allowable vapour velocity

Number of theorectical plates

Static submergence

Length of straight rectangular weir on cross-flow tray

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Process Equipment and Plant Design

Process Equipment and Plant Design Generally, as the length of the liquid path on a tray is increased beyond 5 ft, the overall column efficiency

Process Equipment and Plant Design In a shell and tube heat exchanger for a given heat transfer surface area, smaller diameter tubes are favoured as compared to larger diameter ones ; because the smaller diameter tubes

Process Equipment and Plant Design The operating velocity in the absorption tower is usually 40-50% of the flooding velocity. Packed absorption towers are normally designed for a pressure drop of about __________ mm of water column per metre height of packing.

Process Equipment and Plant Design Width and depth of grooves in the tube sheet holes normally are __________ inch respectively.

Process Equipment and Plant Design Which of the following is used to set the diameter of the distillation column?

Process Equipment and Plant Design
Generally, as the length of the liquid path on a tray is increased beyond 5 ft, the overall column efficiency

Process Equipment and Plant Design
In a shell and tube heat exchanger for a given heat transfer surface area, smaller diameter tubes are favoured as compared to larger diameter ones ; because the smaller diameter tubes

Process Equipment and Plant Design
The operating velocity in the absorption tower is usually 40-50% of the flooding velocity. Packed absorption towers are normally designed for a pressure drop of about __________ mm of water column per metre height of packing.

Process Equipment and Plant Design
Width and depth of grooves in the tube sheet holes normally are __________ inch respectively.

Process Equipment and Plant Design
Which of the following is used to set the diameter of the distillation column?