Question

Core sand can be rammed in a dump type core box on a ______________

(a) Jolt Machine

(b) Sand Slinger

(c) Core roll over machine

(d) Core extrusion machine

This question was addressed to me during a job interview.

My question comes from Methods of Making Cores topic in section Sand Moulding of Foundry and Forging

Answer 1

The correct answer is (a) Jolt Machine

To explain: In a jolting machine, the core box filled with sand is mounted on a jolt table which is raised to a certain height and then dropped under on its own weight. Sand gets rammed due to this sudden fall.