Q67
Cores are used to
A.
Form internal cavities in the casting
B.
Improve mould surface
C.
Form a part of a green sand mould
D.
All of these
AnswerAnswer: Option D
Solution
Answer: Option D
Solution:
Cores are used to Form internal cavities in the casting and Improve mould surfaceand used to Form a part of a green sand mould core is a device used in casting and moulding processes to produce internal cavities and reentrant angles .
The core is normally a disposable item that is destroyed to get it out of the piece