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.Management Sciences
Category: Process Equipment and Plant Design
Liquid redistribution should be done in a packed tower packed with raschig rings every 6 metres or ______________ times the column diameter, whichever is lower?
A. 2.5-3.0
B. 5-7.5
C. 10-12.5
D. 15-20
Optimum economic pipe diameter for fluid flow is determined by the____________________?
A. Viscosity of the fluid
B. Density of the fluid
C. Total cost considerations (pumping cost plus fixed cost of the pipe)
D. None of these
Flanges are connected to pipes by _______________________?
A. Screwing
B. Welding
C. Brazing
D. All A., B. and C.
Cooling water fouling factors vary in the range of 0.001 to 0.003____________________?
A. (BTU/hr.ft2. °F)-1
B. (kcal/hr.m2.°C)-1
C. (W/m2.°K)-1
D. (kcal/hr. m. °C)-1
For identical situation, condensing film coefficient in case of a horizontal condenser is almost ______________ the value expected in case of vertical condenser?
A. Half
B. Twice
C. Thrice
D. Five times
Baffles may be eliminated for_________________?
A. Low viscosity liquids (< 200 poise)
B. High viscosity liquids (> 600 poise)
C. Large diameter tanks
D. None of these
Saddle supports are used for supporting _____________ vessels?
A. Horizontal cylindrical
B. Tall vertical
C. Thick walled vertical
D. Thick spherical
The ends of a cylindrical vessel can be closed by a head, which can be one of the four shapes. For the same thickness, choose the one which can withstand the highest pressure ?
A. Flat plate
B. Hemispherical
C. Torispherical
D. Ellipsoidal
It is not desirable to design a heat exchanger for LMTD correction factor, FT, of less than _________________?
A. 0.99
B. 0.95
C. 0.80
D. 0.55
Which of the following factors determine the amount of entrainment in a distillation column ?
A. Plate spacing
B. Depth of liquid above the bubble cap slots
C. Vapour velocity in the volume between the plates
D. All A., B. and C.
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