What is the slope of the operating line in the rectifying section of a distillation column ?
What is the slope of the operating line in the rectifying section of a distillation column ?
A. 0
B. ∞
C. > 1
D. <1
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Liquid redistribution should be done in a packed tower packed with raschig rings every 6 metres or ______________ times the column diameter, whichever is lower?
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. 15-20In case of design of a shell and tube heat exchanger___________________?
In case of design of a shell and tube heat exchanger___________________?A. Minimum cleaning lane of 6.5 mm is provided, when tubes are on a square pitch
B. Minimum tube sheet thickness (in which tubes are fixed) is equal to the O.D. of the tube upto
15 mm tube diameter; and for > 15 mm tube diameter, tube sheet thickness is smaller than
tube diameter
C. O.D. of the tube is 6 to 40 mm while the tube lengths used are 0.5, 2.5, 3.0, 4.0, 5.0, 6 metres
D. All A., B. & C.Typical static submergence for bubble cap plate column operating at atmospheric pressure may be around _________________?
Typical static submergence for bubble cap plate column operating at atmospheric pressure may be around _________________?A. 2.5″
B. 0.5″
C. 5″
D. 50% of the plate spacingFor high pressure process equipments/vessels, the connected nozzle should be____________________?
For high pressure process equipments/vessels, the connected nozzle should be____________________?A. Welded
B. Screwed
C. Flanged
D. BrazedIn a shell and tube heat exchanger, triangular pitch arrangement as compared to square pitch arrangement ?
In a shell and tube heat exchanger, triangular pitch arrangement as compared to square pitch arrangement ?A. Results in higher shell side pressure drop
B. Can accomodate less number of tubes for a given shell diameter
C. Facilitates easier shell side cleaning; hence is more suitable for handling high dirt factor shell
side fluid
D. Creates relatively lower turbulence on the shell side resulting in lower shell side heat transfer
co-efficientThe ratio for the rate of washing to the final rate of filtration in a washing type of plate and frame filter is____________________?
The ratio for the rate of washing to the final rate of filtration in a washing type of plate and frame filter is____________________?A. 0.25
B. 0.50
C. 0.75
D. 1.25