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Engineering Materials
Comments
Question
The dieing down of a white flame during the operation of a bessemer converter indicates that the air is burning out silicon and manganese.
Options
A. Yes
B. No
Correct Answer
No
Engineering Materials problems
Search Results
1. The electric process of steel making is especially adopted to
Options
A. alloy and carbon tool steel
B. magnet steel
C. high speed tool steel
D. all of these
Show Answer
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Discuss
Correct Answer: all of these
2. Nimonic contains __________ percentage of nickel as that of Inconel.
Options
A. same
B. less
C. more
Show Answer
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Correct Answer: same
3. An alloy steel which is work hardenable and which is used to make the blades of bulldozers, bucket wheel excavators and other earth moving equipment contain iron, carbon and
Options
A. chromium
B. silicon
C. manganese
D. magnesium
Show Answer
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Correct Answer: manganese
4. Cast iron is manufactured in
Options
A. blast furnace
B. cupola
C. open hearth furnace
D. bessemer converter
Show Answer
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Discuss
Correct Answer: cupola
5. The cupola is used to manufacture
Options
A. pig iron
B. cast iron
C. wrought iron
D. steel
Show Answer
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Correct Answer: cast iron
6. Cast iron is a
Options
A. ductile material
B. malleable material
C. brittle material
D. tough material
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Correct Answer: brittle material
7. Dye penetrant method is generally used to locate
Options
A. core defects
B. surface defects
C. superficial defects
D. temporary defects
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Correct Answer: surface defects
8. Smelting is the process of
Options
A. removing the impurities like clay, sand etc. from the iron ore by washing with water
B. expelling moisture, carbon dioxide, sulphur and arsenic from the iron ore by heating in shallow kilns
C. reducing the ore with carbon in the presence of a flux
D. all of the above
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Correct Answer: reducing the ore with carbon in the presence of a flux
9. Haematite iron ore contains iron about
Options
A. 30%
B. 45%
C. 55%
D. 70%
Show Answer
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Correct Answer: 70%
10. When the steel is normalised, its
Options
A. yield point increases
B. ductility decreases
C. ultimate tensile strength increases
D. all of these
Show Answer
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Correct Answer: all of these
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