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Engineering
Mechanical
ME Set-3
Engineering Materials
168

Engineering Materials MCQ with Answers

168) Hardness of upper bainite (acicular structure) is about

RC 65

RC 48

RC 57

RC 80

Answer is:

RC 48

Explanation:

Hardness of upper bainite (acicular structure) is about RC 48

Engineering Materials MCQ with Answers

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Related Engineering Materials MCQ with Answers

169) Carbon in iron is an example of

substitutional solution

interstitial solid solution

intermetallic compounds

all of the above

Answer is:

interstitial solid solution

170) Brass (alloy of copper and zinc) is an example of

substitutional solid solution

interstitial solid solution

intermetallic compounds

all of the above

Answer is:

substitutional solid solution

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

relieve stresses

harden steel slightly

improve machining characteristic

soften material

Answer is:

harden steel slightly

172) Argentite is the principal ore or raw material for

aluminium

tin

zinc

None of these

Answer is:

None of these

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