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Name the missing part of the pattern in the diagram labelled as (?)?

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in Casting-Forming-Welding I by (687k points)
Name the missing part of the pattern in the diagram labelled as (?)?

(a) Core

(b) Riser

(c) Sprue

(d) Mould cavity

I have been asked this question in a national level competition.

My doubt stems from Functions of a Pattern in division Pattern and Pattern Making of Casting-Forming-Welding I

1 Answer

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Best answer
Correct option is (a) Core

Explanation: The illustrated part in the diagram is core. The core in a pattern is used to create holes or hollow cavities.

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