Engineering Materials MCQ with Answers

Engineering Materials MCQ with Answers

171) Which is false statement about annealing.Annealing is done to

Answer is:

harden steel slightly

172) Argentite is the principal ore or raw material for

Answer is:

None of these

173) Hardness of lower bainite (tempered martensite) is about

Answer is:

RC 57

Explanation:

Hardness of lower bainite (tempered martensite) is about RC 57

174) Which is false statement about normalizing. Normalizing is done to

Answer is:

induce stresses-

Which is false statement about normalizing. Normalizing is done to

175) Vanadium in high speed steels

Answer is:

forms very hard carbides and thus in-creases wear resistance

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