Process Equipment And Plant Design | Test For NTS PPSC FPSC, TEST

Pick out the wrong statement?

A. In practical operation, distillation towers having diameter 3-6 metres equipped with bubble cap (round) size of 15 cms are used
B. Height of packing in a packed tower is about 3 times the column diameter for raschig rings and about 5 to 10 times the column diameter for saddle packing
C. In a sieve tray, the minimum hole diameter is equal to the tray thickness
D. In a stainless steel sieve tray, the minimum hole diameter is equal to 10 times the plate thickness

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Category: Process Equipment and Plant Design

Theoretically calculated diameter of the stripping section of the continuous rectification column is ______________ that of the enriching section?

In a continuous distillation column, the optimum reflux ratio ranges from _______________ times the minimum reflux ratio?

Pick out the wrong statement?

(Le/D) for a Tee (used as elbow, entering run) would be around _______________________?

Which of the following material is seldom used for pressure vessel construction ?

Equivalent diameter for heat transfer calculation for a duct of square cross-section having each side as ‘d’ will be__________________?

The minimum shell thickness for tank ≤ 15 metres diameter is limited to _______________ mm, for reasons of elastic stability?

What is the slope of the operating line in the stripping section of a distillation column ?

_____________ dished head is the strongest of all?

In a rotary drier, the average retention time of solid is (where Z = length of the drier, metres ρ = apparent solid density, kg/m3 L = flow rate of dry solids, kg/see. m2 drier crosssection H = hold up of solid.) ?