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Engineering Materials QUESTIONS AND ANSWERS

Mechanical Engineering : Engineering Materials QUESTIONS AND ANSWERS :: part5 : 11 to 15

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

11.Pipes for bicycle frames are made of

cold rolled steel

hot rolled steel

forged steel

cast steel

carbon-chrome steel.

12.Melting point of iron is

1539�C

1601�C

1489�C

1712�C

1131�C.

13.Which of lh6 following pipes is least corrosion resistant

brass

mild steel

cast iron

wrought iron

copper.

14.White cast iron

contains 1.7 to 3.5% carbon in free state and is obtained by the slow cooling of molten cast iron

is also known as chilled cast iron and is obtained by cooling rapidly. It is almost unmachinable

is produced by annealing process. It is soft, tough and easily machined metal

is produced by small additions of magnesium (or creium) in the ladle. Graphite is in nodular or spheroidal form and is well dispersed throughout the material

none of the above.

15.The following element can't impart high strength at elevated temperature

manganese

magnesium

nickel

silicon

none of the above.

More Engineering Materials QUESTIONS AND ANSWERS available in next pages