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Engineering Materials - Interview Questions and Answers

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6. Cold rolled steel sheets contain carbon of the following order
A. 0.1%
B. 0.2%
C. 0.4%
D. 0.6%
E. 0.8%.
Explanation:
7. High carbon steel carries carbon %age c
A. 0.1 to 0.3%
B. 0.3 to 0.6%
C. 0.6 to 0.8%
D. 0.8 to 1.5%
E. 1.5 to 2.5%.
Explanation:
8. Nickel in steel
A. improves wear resistance, cutting ability and toughness
B. refines grain size and produces less tendency to carburisation, improves corrosion and heat resistant properties
C. improves cutting ability and reduces hardenability
D. gives ductility, toughness, tensile strength and anticorrosion properties
E. none of the above.
Explanation:
9. The presence of sulphur in pig iron makes
A. it easily machinable
B. it brittle
C. it hard
D. the casting unsound
E. increases the fluidity.
Explanation:
10. Pipes for bicycle frames are made of
A. cold rolled steel
B. hot rolled steel
C. forged steel
D. cast steel
E. carbon-chrome steel.
Explanation:
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