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.Management Sciences
Category: Process Equipment and Plant Design
Width and depth of grooves in the tube sheet holes normally are _______________ inch respectively?
A. 1/8 and 1/64
B. 1/64 and 1/8
C. 1/2 and 8
D. 1/2 and 5
Mc Cable Thiele method used for finding theoretical stages in a distillation column assumes that the_____________________?
A. Sensible heat differences are small, because the temperature changes from tray to tray is small
B. Trouton’s rule is applicable
C. Liquid/vapor loading across the column remains constant
D. All A., B. and C.
Holes of a sieve tray are arranged in triangular pitch of _________________ times the hole diameter?
A. 1.5 to 2
B. 2.5 to 5
C. 5 to 10
D. 10 to 15
In a shell and tube heat exchanger, the shortest centre to centre distance between the adjacent tubes is__________________?
A. Called tube pitch
B. Called tube clearance
C. Always less than the diameter of the tube
D. None of these
Which of the following is the most common type of baffle used in industrial shell and tube heat exchanger ?
A. 75% cut segmental baffle
B. 25% cut segmental baffle
C. Orifice baffle
D. Disk and doughnut baffle
Rotary driers are most economically designed for the number of heat transfer units (HTU) from _________________?
A. 0.01 to 1
B. 1.5 to 2.5
C. 5 to 10
D. 10 to 20
Tube side heat transfer co-efficient for turbulent flow of liquid through tubes is proportional to___________________?
A. G0.2
B. G0.5
C. G0.8
D. G1.5
Smoker’s equation for the calculation of number of equilibrium stages in a continuous binary distillation column is used, when the_________________?
A. Relative volatility is close to one (e.g., separation of close boiling isomers)
B. Feed is not at its bubble point
C. Number of equilibrium stages in only stripping section is to be calculated
D. Number of equilibrium stages required is likely to be very small
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