Engineering Materials MCQ Questions & Answers | Mechanical Engineering

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1.
The percentage of carbon in grey iron castings usually varies between

A. 0.5 to 1%

B. 1.2%

C. 2.5 to 4.5%

D. 5 to 7%

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2.
Dye penetrant method is generally used to locate

A. Core defects

B. Surface defects

C. Superficial defects

D. Temporary defects

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3.
The material widely used for making pendulums of clocks is

A. Stainless steel

B. High speed steel

C. Heat resisting steel

D. Nickel steel

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4.
Taps dies and drills contain carbon

A. Below 0.5%

B. Below 1%

C. Above 1%

D. Above 2.2%

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5.
Solder is an alloy consisting of

A. Tin, antimony, copper

B. Tin and copper

C. Tin and lead

D. Lead and zinc

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