Height of the flights in the rotary drier is in the range of___________________?
A. 0.08 to 0.12 d
B. 0.02 to 0.05 d
C. 0.2 to 0.5 d
D. 0.5 to 0.6 d
Month: March 2019
The function of manholes provided in the shell of a distillation column is to __________________?
The function of manholes provided in the shell of a distillation column is to __________________?
A. Keep a check on the liquid gradient over the plate by direct visual observation
B. Give access to the individual trays for cleaning, maintenance and installation
C. Guard against foaming & entrainment by dumg antifoaming agent through it
D. All A., B. and C.
Pick out the wrong statement about the design of sieve plate column and the bubble cap column ?
Pick out the wrong statement about the design of sieve plate column and the bubble cap column ?
A. The downcomer design and the residence time in the downcomer is almost same for sieve
plate and bubble cap columns
B. Weir length for a bubble cap plate is the same as that for the sieve plate
C. Weir height for a bubble cap plate column is the same as that for a sieve plate column
D. Weir height in case of a bubble cap plate ranges from 50 to 150 mm and is higher than the
sieve plate
For 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. Brazed
Generally, as the length of the liquid path on a tray is increased beyond 5 ft, the overall column efficiency___________________?
Generally, as the length of the liquid path on a tray is increased beyond 5 ft, the overall column efficiency___________________?
A. Increases
B. Decreases
C. Remain same
D. May increase or decrease depending upon the plate spacing
Of the pressure vessels, with same thickness but different diameters, which one withstands higher pressure ?
Of the pressure vessels, with same thickness but different diameters, which one withstands higher pressure ?
A. Larger dia vessel
B. Smaller dia vessel
C. Larger dia long vessel
D. Strength of the vessel is same irrespective of the diameter
For a cylindrical vessel of moderate height, the weld joint efficiency for joints parallel to the cylindrical axis is given as 1.0; while for joints along the girth (circumference) it is given as 0.8. In calculating the shell wall thickness using code formula for an internally pressurised cylindrical vessel, what value of weld joint efficiency should be used ?
For a cylindrical vessel of moderate height, the weld joint efficiency for joints parallel to the cylindrical axis is given as 1.0; while for joints along the girth (circumference) it is given as 0.8. In calculating the shell wall thickness using code formula for an internally pressurised cylindrical vessel, what value of weld joint efficiency should be used ?
A. 0.8
B. 0.9
C. 1.0
D. (0.8)0.5
25 per cent cut segmental baffle means that the baffle__________________?
25 per cent cut segmental baffle means that the baffle__________________?
A. Height is 75% of the I.D. of the shell
B. Height is 25% of the I.D. of the shell
C. Spacing is 75% of its height
D. Width is 25% of its height
In a shell and tube heat exchanger, the ‘tube pitch’ is defined as the _____________________?
In a shell and tube heat exchanger, the ‘tube pitch’ is defined as the _____________________?
A. O.D. of the tube for square pitch
B. Shortest distance between two adjacent tube holes
C. Shortest centre to centre distance between adjacent tubes
D. None of these
A riveted joint does not fail by _____________________ of rivets?
A riveted joint does not fail by _____________________ of rivets?
A. Tearing
B. Shearing
C. Tearing of the plate across a row
D. None of these