In the given figure of thermit welding apparatus, what does the question mark represents which part?(a) Riser(b) Runner(c) Sand plug(d) PreheatingI got this question at a job interview.Origin of the question is Thermit Welding topic in portion Welding and Related Processes of Casting-Forming-Welding II

In the given figure of thermit welding apparatus, what does the questi

1.	In the given figure of thermit welding apparatus, what does the question mark represents which part?(a) Riser(b) Runner(c) Sand plug(d) PreheatingI got this question at a job interview.Origin of the question is Thermit Welding topic in portion Welding and Related Processes of Casting-Forming-Welding II
Answer» Correct choice is (c) Sand PLUG For EXPLANATION I would say: The PART represented by the question mark is the sand plug. Superheated liquid steel is poured, which then effects in forming the weld. This process, HENCE, is a fusion welding process.

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