Question

In any flow through a system, if the area of cross section in which the metal is flowing, decreases, how will it affect the velocity?

(a) Increases

(b) Decreases

(c) No affect

(d) Quantities not related

This question was addressed to me during an interview.

Asked question is from Heating and Pouring topic in portion Preventive Maintenance in Foundries & Metal Casting Process of Casting-Forming-Welding I

Answer 1

Correct answer is (a) Increases

To explain I would say: If the area of cross section of the system through which the molten metal is flowing, gets a decrease, then the velocity of the flow would increase, as the two hold an inverse relation.