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Process Equipment and Plant Design

Process Equipment and Plant Design
Steam side heat transfer co-efficient for design consideration under ordinary condition can be assumed to be about __________ kcal/hr.m².°C.

2500
7500
1250
15000

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Process Equipment and Plant Design
With increase in pressure drop (for a given particle size), the dust collection efficiency of a cyclone separator will

Decrease
Increase or decrease depending on the nature of the dust
Increase
Remain unaffected

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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
Σ/E
E
E/σ

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Process Equipment and Plant Design
Excessive liquid gradient on a tray may result in the

All of these
Maldistribution of gas
Back trapping
Gas blowing beneath cap skit

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Process Equipment and Plant Design
Multiple blade paddle agitator is used for mixing high viscosity liquids/paste in which the paddle diameter is commonly 0.8 times the tank diameter. However, the width of the blade is in the range of __________ times the paddle diameter.

0.3 to 0.5
0.1 to 0.25
0.5 to 0.6
0.65 to 0.80

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Process Equipment and Plant Design
In a multipass shell and tube heat exchanger, the baffles on shell side is primarily provided for

Increasing pressure drop
Fixing the tubes
Creating turbulence
Reducing scale deposition

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