For a cylinderical internally pressurised vessel, which of the following closure types would withstand highest pressure, if each closure is of the same material and thickness? Hemispherical Ellipsoidal (2 : 1) Conical Flat plate TRUE ANSWER : ? YOUR ANSWER : ?
__________ tower is the most suitable gas-liquid contacting device involving highly corrosive fluids. None of these Packed Bubble cap plate Sieve plate TRUE ANSWER : ? YOUR ANSWER : ?
In a shell and tube heat exchanger, the overall heat transfer co-efficient is proportional to the tube side (volumetric flow rate)0.8. This is valid, only when the ratio of the tube side film resistance to the total resistance is almost equal to ∞ 2 1 20.8 TRUE ANSWER : ? YOUR ANSWER : ?
The diameter of a propeller agitator used in agitation tank ranges from __________ percent of the tank diameter and its peripherial speed is normally 300 to 500 metres/minute. 55 to 75 15 to 30 40 to 50 5 to 10 TRUE ANSWER : ? YOUR ANSWER : ?
Which of the following efficiencies can be greater than 100%? Point efficiency Murphree plate efficiency None of these Overall plate efficiency TRUE ANSWER : ? YOUR ANSWER : ?
In actual operation of a bubble cap distillation tower, the __________ at the bottom of the tower is more than that at the top of the tower. Vapour molecular weight All of these Pressure and temperature Molal flow rate of vapour TRUE ANSWER : ? YOUR ANSWER : ?
Diameter of the seive tray column is determined by the Hole diameter of the seive tray Height of the plate spacing Upper limit of the vapour velocity Lower limit of vapour velocity TRUE ANSWER : ? YOUR ANSWER : ?
For annular flow of a fluid, the ratio of the equivalent diameter for pressure drop calculation to the equivalent diameter for heat transfer calculation is (d1 + d2)/d1 D2/(d1 + d2) (d1 + d2)/d2 D1/(d1 + d2) TRUE ANSWER : ? YOUR ANSWER : ?
Poisson's ratio of a material is the ratio of unit lateral strain to the unit axial elongation within its elastic limit. The value of Poisson's ratio for structural and pressure vessel steel may be taken as 0.75 0.01 0.3 0.95 TRUE ANSWER : ? YOUR ANSWER : ?
Minimum baffle spacing recommended in a shell and tube heat exchanger is equal to I.D. of the shell 5 cms 25 cms 40% of the I.D. of the shell TRUE ANSWER : ? YOUR ANSWER : ?