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Engineering
Mechanical
ME Set-3
Engineering Materials
144

Engineering Materials MCQ with Answers

144) The most effective inhibitor of grain growth, when added in small quantities is

carbon

vanadium

manganese

cobalt

Answer is:

vanadium

Engineering Materials MCQ with Answers

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Related Engineering Materials MCQ with Answers

145) Depth of hardness of steel is increased by addition of

nickel

chromium

tungsten

vanadium

Answer is:

chromium

146) Railway rails are normally made of

mild steel

alloy steel

high carbon

tungsten steel

Answer is:

high carbon

147) Pick up the wrong statement

aluminium in steel results in excessive grain growth

manganese in steel induces hardness

nickel and chromium in steel help in raising the elastic limit and improve the resilience and ductility

tungsten in steels improves magnetic properties and hardenability

Answer is:

aluminium in steel results in excessive grain growth

148) Pick up the wrong statement Nickel and chromium in steel help in

providing corrosion resistance

improving machining properties

providing high strength at elevated temperatures

raising the elastic limit

Answer is:

improving machining properties

Engineering Materials MCQ with Answers

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