Question

Cores are required to create ________________

(a) Gates

(b) Spruees

(c) Undercuts

(d) Recesses

The question was posed to me during an interview.

My question is taken from Cores and Types topic in chapter Sand Moulding of Foundry and Forging

Answer 1

The correct option is (d) Recesses

To elaborate: Cores are employed as inserts in moulds to form design features that are otherwise extremely difficult to produce by the simple molding method. Hence cores are required to create the recesses, undercuts and interior cavities that are often a part of castings.