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.Management Sciences
Category: Process Equipment and Plant Design
The value of fouling factor depends upon the__________________?
A. Characteristic of process fluid
B. Velocity of process fluid containing suspended solids
C. Suspended solids in the fluid
D. All A., B. and C.
The shell side pressure drop in a shell and tube heat exchanger is maximum for _______________ baffle?
A. Disk and ring
B. Segmental
C. Orifice
D. Independent of the type of
In common bubble cap distillation column design practice, riser area is approximately equal to (where, Aa = Annular passage area, and Sa = Slot area) ?
A. Aa = Sa
B. 1.2 Aa = 1.2 Sa
C. Sa = 1.5 Aa
D. Aa = 1.5 Sa
1.2 to 3.8 cms is the value of the ______________________?
A. Downcomer liquid seal in case of a balanced tray design
B. Static submergence in case of a bubble cap tray for column operating under pressure (≥ 1 atm)
C. Skirt clearance for bubble caps
D. All A., B. and C.
______________ closure is the weakest enclosure for cylindrical vessels?
A. Hemispherical
B. Torispherical
C. Conical or flat plate
D. Elliptical
Normally, the length to diameter ratio of rotary dryers varies from 4 to 10 and for its economic operation; the number of transfer units (NTU) for such dryers varies from ?
A. 1.5-2.5
B. 3.5-5.5
C. 7.5-10.0
D. 10-15
Larger depth of liquid on the trays of a distillation column_________________?
A. Leads to high tray efficiency
B. Results in higher pressure drop per tray
C. Both A. & B.
D. Neither A. or B.
In a ______________ riveted joint, the rivets in the various rows are opposite to each other?
A. Zig-zag
B. Chain
C. Diamond
D. None of these
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