Question

Cores of which of the following shapes are not produced in core extrusion process:

(a) Square

(b) Hexagonal

(c) Round

(d) Random

This question was addressed to me by my school principal while I was bunking the class.

My question is based upon Methods of Making Cores topic in section Sand Moulding of Foundry and Forging

Answer 1

Right answer is (d) Random

Explanation: In a core extrusion machine, a die is to be made and fixed at one end. The machine has a hopper through which the core sand is fed to a horizontal spiral conveyor. The cores of basic geometrical shape are only produced in this method.