Question

What is a supplementary operation requirement?

(a) The availability of extra material if the original material is damaged

(b) A material that requires supplementary operations to be used in manufacturing

(c) The operations that are not necessary to perform

(d) Operations that have to be avoided

I have been asked this question by my school principal while I was bunking the class.

The question is from Factors Affecting the Selection of Materials topic in section Materials Selection of Aerospace Materials & Processes

Answer 1

Right answer is (b) A material that requires supplementary operations to be used in manufacturing

Easiest explanation: A material that requires supplementary operations before being used in manufacturing is called supplementary operational requirement. The operations vary depending on the material. A few examples are plating, heat treatment etc. The materials cannot be used in their natural state. This is a disadvantage as it is more costly and time-consuming.