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.Management Sciences
Category: Process Equipment and Plant Design
Pressure drop (Δp) and the superficial gas mass velocity (G) in case of packed absorption tower operating in the preloading range are related as_________________?
A. Δp = G
B. Δp = G0.5
C. Δp = G2
D. Δp = 1/G0.6
______________ of water makes it a widely used coolant in heat exchangers?
A. Low corrosiveness
B. Low dirt factor
C. High specific heat
D. Low viscosity
Cylindrical pressure vessels in horizontal condition is generally supported on a ________________ support?
A. Lug
B. Skirt
C. Saddle
D. Guy wire
Hold up of material in a operating rotary drier is in the range of___________________?
A. 0.05 to 0.15
B. 0.25 to 0.50
C. 0.5 to 0.8
D. 0.8 to 0.9
Corrosion allowance in the design of pressure vessel/chemical equipment is not necessary, if___________________?
A. Plain carbon steel and cast iron parts are used
B. Wall thickness is > 30 mm
C. Material of construction is high alloy steel
D. Both B. & C.
Thin spherical shells subjected to internal pressure, develop ______________ stresses?
A. Radial
B. Circumferential
C. Both A. & B.
D. Neither A. nor B.
Lug support is meant for supporting _______________ vessels?
A. Large horizontal cylindrical
B. Tall but empty
C. Small
D. Thick walled tall
Optimum reflux ratio in a continuous distillation column is determined by the__________________?
A. Maximum permissible vapour velocity
B. Flooding limit of the column
C. Total cost consideration (fixed cost of the column plus the cooling water & steam cost)
D. None of these
Pick out the wrong statement about routing of fluids in a shell and tube heat exchanger ?
A. The corrosive and fouling fluid should be preferably routed through the tubes
B. The viscous fluid should be routed through the shell side
C. Lower flow rate fluid should be routed through the shell side
D. Higher pressure fluid stream should be routed through the shell side
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