Flat plate
Hemispherical
Torispherical
Ellipsoidal
✅ The correct answer is option D.
Process Equipment and Plant Design MCQs
292. The necessary wall thickness for a metallic storage vessel is a function of the
ultimate tensile strength (or yield point) of the material and operating temperature.
operating pressure and welding/joint efficiency.
diameter of the vessel.
all (a); (b) and (c).
✅ The correct answer is option D.
293. The circumferential (hoop) stress in a thin walled cylinderical vessel under internal pressure is
pd/2t
pd/4t
pd/t
pd/3t
✅ The correct answer is option A.
294. In a distillation column, bubble caps are located on trays with a pitch of __________ times the outside diameter of the caps.
1.3 to 2
1.6 to 2
2.5
1.5 to 3
✅ The correct answer is option A.
295. Of the pressure vessels, with same thickness but different diameters, which one withstands higher pressure ?
Larger dia vessel.
Smaller dia vessel.
Larger dia long vessel.
Strength of the vessel is same irrespective of the diameter.
✅ The correct answer is option B.
296. In packed absorption tower, onset of flooding usually occurs at a pressure drop of about __________ mm of water column per metre height of packing.
25-50
50-75
200-250
750-1000
✅ The correct answer is option B.