Process Equipment and Plant Design
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.

3 times the thickness
Either A or B, whichever is larger
Either A or B, whichever is smaller
6% of I.D.

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Process Equipment and Plant Design
In a bag filter, the pressure drop increases directly as the

Density of the gas, but is independent of the viscosity of the gas
None of these
Density of the gas and inversely as viscosity of the gas
Viscosity of the gas and inversely as density of the gas

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