Question

The velocity distribution within the conduit depends on _____

(a) shape of the conduit and nature of flow

(b) temperature of the molten metal

(c) impurities present in the molten metal

(d) type of the molten metal

I got this question in an online interview.

This key question is from Effects of Friction and Velocity Distribution topic in portion Pouring – Gating Design, Melting Furnaces, Melting and Casting Quality of Casting-Forming-Welding I

Answer 1

Right answer is (a) shape of the conduit and nature of flow

Explanation: The velocity distribution within the conduit depends on the shape of the conduit and the nature of flow (i.e. turbulent or laminar). The velocity profile is parabolic in laminar flow and is logarithmic in turbulent flow. Shape of the conduit means cross-sectional area which varies in inverse proportion to the velocity.