In the downcomer of a distillation column, the minimum recommended residence time is about _______________ seconds?

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In a pressure vessel containing multiple openings of various dimensions at different parts, stress concentration at the edges of the opening is maximum which becomes negligibly small beyond the area covered by ______________ times the hole diameter?

A. Two B. Five C. Ten D. Twenty...

Which of the following is the most common type of baffle used in industrial shell and tube heat exchanger ?

A. 75% cut segmental baffle B. 25% cut segmental baffle C. Orifice baffle D. Disk and doughnut baffle...

A pressure vessel is said to be made of ‘thick’ shell, if the ratio of its diameter to wall thickness is_______________?

A. < 10 B. > 10 C. > 20 D. < 20...

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

A. 1.1 to 1.5 B. 1.6 to 2 C. 2.2 to 2.6 D. 2.7 to 3...

____________________ strain is measured using a ‘strain rosetter’ ?

A. Volumetric B. Shear C. Linear D. None of these...