Practical dividing line between a ductile and brittle materials is suggested, when the ultimate elongation is about 5%. Generally, larger the knuckle radius, stronger is the corner torus section of a head. The knuckle radius provided should be less than __________ of the head.
Options
A. 6% of I.D.
B. 3 times the thickness
C. either (a) or (b), whichever is larger
D. either (a) or (b), whichever is smaller
Correct Answer
either (a) or (b), whichever is larger
Process Equipment and Plant Design problems
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1. Log mean temperature difference in case of multi-pass shell and tube heat exchanger is always
8. In a shell and tube heat exchanger having square pitch, the shell side equivalent diameter is given by (where, P = pitch, d = outside diameter of the tube)