Mechanical Engineering Questions And Answers :: Engineering Materials: part5



Mechanical Engineering : Engineering Materials QUESTIONS AND ANSWERS :: part5 : 6 to 10

Following Mechanical Engineering Multiple choice objective type questions and answers will help you in BSNL JTO, GATE 2024 and IES 2024 examinations :

6.Large forgings, crank shafts, axles normally contain carbon upto

0.05 to 0.20%
0.20 to 0.45%
0.45 to 0.55%
0.55 to 1.0%
1.0 to 1.2%.

7.Cold rolled steel sheets contain carbon of the following order

0.1%
0.2%
0.4%
0.6%
0.8%.

8.High carbon steel carries carbon %age c

0.1 to 0.3%
0.3 to 0.6%
0.6 to 0.8%
0.8 to 1.5%
1.5 to 2.5%.

9.Nickel in steel

improves wear resistance, cutting ability and toughness
refines grain size and produces less tendency to carburisation, improves corrosion and heat resistant properties
improves cutting ability and reduces hardenability
gives ductility, toughness, tensile strength and anticorrosion properties
none of the above.

10.The presence of sulphur in pig iron makes

it easily machinable
it brittle
it hard
the casting unsound
increases the fluidity.

More Engineering Materials QUESTIONS AND ANSWERS available in next pages

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