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.Management Sciences
Category: Process Equipment and Plant Design
Welded joint efficiency in the design of chemical process equipment is taken as_________________?
0
A. 0.55
B. 0.75
C. 0.85
D. 0.95
Maximum size of the raschig rings used in a packed tower is about _______________ of the column diameter?
A. 1/10th
B. 1/20th
C. 1/30th
D. 1/50th
If ‘D’ is the inside diameter of the shell of a shell and tube heat exchanger, then the baffle spacing is usually in the range of__________________?
A. D/2 or minimum 2″ to 5D
B. D/5 or minimum 2″ to 5D
C. D/5 or minimum 2″ to D
D. None of these
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
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
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