Fouling factor must be included in the calculation of overall design heat transfer coefficient, when the liquid__________________?

Related Mcqs:

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...

Log mean temperature difference in case of multi-pass shell and tube heat exchanger is always_________________?

A. Less than arithmetic mean value B. More than arithmetic mean value C. More than geometric mean value D. Both B. & C....

Circumferential (hoop) stress in a thin cylindrical vessel under internal pressure is _____________ the longitudinal stress?

A. Half B. Equal to C. Twice D. Eight times...

In packed towers provided with saddle packing, liquid redistributors are positioned at every _______________ times column diameter or 6 metres whichever is less?

A. 2-3 B. 5-8 C. 10-15 D. 20-25...

A riveted joint does not fail by _____________________ of rivets?

A. Tearing B. Shearing C. Tearing of the plate across a row D. None of these...