GATE ME 2023 Set 1 — Question 25

MSQ+1 / -0MediumPattern Design & AllowancesCastingManufacturing ProcessesMoulds, Cores & Core Prints

Manufacturing Processes → Casting → Moulds, Cores & Core Prints

Last updated 5 September 2026

Question

In a metal casting process to manufacture parts, both patterns and moulds provide shape by dictating where the material should or should not go. Which of the option(s) given correctly describe(s) the mould and the pattern?

Correct answer (A) Mould walls indicate boundaries within which the molten part material is allowed, while pattern walls indicate boundaries of regions where mould material is not allowed.; (B) Moulds can be used to make patterns.; (D) Patterns can be used to make moulds. Solution In a metal casting process: A mould is a container that has a cavity of the desired shape. Its walls define the boundaries within which the molten metal is allowed to flow and solidify. A pattern is a replica of the object to be cast. It is used to create the mould cavity. Its walls define the boundaries of the regions where the mould material (like sand) is excluded during the packing process. Option (A) is correct as it accurately describes these roles. Option (B) is correct because in certain processes like investment casting, a master mould is used to produce wax patterns. Option (D) is correct as it is the standard definition of a pattern in sand casting. Option (C) is incorrect because it swaps the definitions of pattern and mould. Turn this into a strength. Explore AI-powered practice and doubt support with Success Tracker.

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Correct answer (A) Mould walls indicate boundaries within which the molten part material is allowed, while pattern walls indicate boundaries of regions where mould material is not allowed.; (B) Moulds can be used to make patterns.; (D) Patterns can be used to make moulds. Solution In a metal casting process: A mould is a container that has a cavity of the desired shape. Its walls define the boundaries within which the molten metal is allowed to flow and solidify. A pattern is a replica of the object to be cast. It is used to create the mould cavity. Its walls define the boundaries of the regions where the mould material (like sand) is excluded during the packing process. Option (A) is correct as it accurately describes these roles. Option (B) is correct because in certain processes like investment casting, a master mould is used to produce wax patterns. Option (D) is correct as it is the standard definition of a pattern in sand casting. Option (C) is incorrect because it swaps the definitions of pattern and mould.

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