A. More
B. Less
C. Same
D. More or less depending upon the pressure & temperature inside the vessel and the nature of
the fluid contained therein
Related Mcqs:
- 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 - Cylindrical storage tanks used for the storage of volatile liquids (e.g., naphtha) have ______________ roofs?
A. Conical
B. Flat
C. Floating
D. Fixed - For a cylindrical shell, (subject to the thickness of uppermost course being more than the minimum for dia of the tank in question), the thickness of the courses of shell_________________?
A. Decreases upwards
B. Increases upwards
C. Remains same throughout
D. May decrease or increase upwards depending upon whether vacuum or positive pressure
would be maintained inside the shell - Large process vessels operating under extreme temperature and pressure conditions are normally clad/ lined with materials like stainless steel, aluminium, nickel & its alloys, copper & its alloys and titanium. The cladding thickness is generally about ______________ percent of the total thickness?
A. 1 to 5
B. 10 to 20
C. 30 to 40
D. 40 to 50 - In case of a shell and tube heat exchanger, the minimum shell thickness for carbon steel (inclusive of corrosion allowance) depends on shell diameter and is in the range of ________________ mm?
A. 3-5
B. 5-11
C. 8-15
D. 12-18 - Most of the storage vessels/tanks are made cylindrical, because of the fact that a cylinder _________________?
A. Has greater structural strength
B. Is easy to fabricate
C. Both A. and B.
D. Neither A. nor B. - Cylindrical shell thickness of rotary drier is generally _______________ mm?
A. 2-3
B. 18-22
C. 6-8
D. 12-15 - The wall thickness of thin cylindrical shell with hemispherical ends is ______________ that of the spherical ends?
A. Equal to
B. More than
C. Less than
D. Either B. or C.; depends on maximum permissible internal pressure - A high vapour velocity is required for high plate efficiency in a sieve plate column. The satisfactory value of operating vapor velocity for design purpose in sieve plate column is about _______________ percent of the flooding velocity?
A. 45
B. 60
C. 80
D. 95 - In case of plain carbon steel, butt welded joints are used for shell plate thickness ≤ _____________ cms?
A. 1.2
B. 0.5
C. 3.8
D. 6.8
