Question

Which of the following is not a power operated molding machine?

(a) Squeeze machine

(b) Sand slinger

(c) Jolt-squeeze machine

(d) Jot-sand machine

I had been asked this question by my school principal while I was bunking the class.

I want to ask this question from Molding Machines in section Foundry Mechanizations of Casting-Forming-Welding I

Answer 1

The correct answer is:

(d) Jot-sand machine

Explanation:

• Squeeze machine (a) is a power-operated molding machine that uses a hydraulic or mechanical squeeze action to compact the sand around a pattern to form a mold.
• Sand slinger (b) is another power-operated machine used to distribute sand uniformly over a pattern during the molding process.
• Jolt-squeeze machine (c) is a combination of a jolt (shaking) and squeeze action, both of which are power-operated processes used in molding to compact the sand around the pattern.

However, a Jot-sand machine (d) is not a common term in the context of foundry molding machines, and it does not refer to a known type of power-operated machine. Therefore, this option is the one that does not belong in the list of power-operated molding machines.