a)(5%) Briefly explain the difference between hardness and
hardenability.b)(5%) What is the main difference between eutectic,
eutectoid and peritectic reactions? c)(10%) A cylindrical piece of
5140 steel heated to γ region and OQ. If the hardness at the
surface must be ≥ 35HRC, what is the maximum allowable dia.?
Explain.
Explain the difference between a training set and a testing set.
Why do we need to differentiate them? Can the same set be used for
both purposes? Why or why not? explain with your own words
please