Engineering Materials MCQ with Answers

Engineering Materials MCQ with Answers

146) the heat treatment process used for softening hardened steel is

Answer is:

tempering

Explanation:

Tempering is a process of heat treating, which is used to increase the toughness of iron-based alloys

147) In Induction hardening ______ Is high.

Answer is:

frequency

148) which of the following is a case hardening process?

Answer is:

all of these

Explanation:

Carburizing, Cyaniding and Nitriding are case hardening process.

149) The process of inducing carbon to ______ Carbon steels in order to give it a hard surface is known as carburizing.

Answer is:

low

150) The process in which carbon and nitrogen both are absorbed by the metal surface to get it hardened is known as

Answer is:

Cyaniding

27
28
29
30
31
32
33