Discussion
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- Question
Cast iron is a
Options- A. ductile material
- B. malleable material
- C. brittle material
- D. tough material
- Correct Answer
- brittle material
- 1. 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 Discuss
- 2. 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 Discuss
- 3. Nimonic contains __________ percentage of nickel as that of Inconel.
Options- A. same
- B. less
- C. more Discuss
- 4. 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 Discuss
- 5. Cast iron is manufactured in
Options- A. blast furnace
- B. cupola
- C. open hearth furnace
- D. bessemer converter Discuss
- 6. Dye penetrant method is generally used to locate
Options- A. core defects
- B. surface defects
- C. superficial defects
- D. temporary defects Discuss
- 7. 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 Discuss
- 8. Haematite iron ore contains iron about
Options- A. 30%
- B. 45%
- C. 55%
- D. 70% Discuss
- 9. When the steel is normalised, its
Options- A. yield point increases
- B. ductility decreases
- C. ultimate tensile strength increases
- D. all of these Discuss
- 10. The material in which the atoms are arranged regularly in some directions but not in others, is called
Options- A. amorphous material
- B. mesomorphous material
- C. crystalline material
- D. none of these Discuss
Engineering Materials problems
Search Results
Correct Answer: No
Correct Answer: all of these
Correct Answer: same
Correct Answer: manganese
Correct Answer: cupola
Correct Answer: surface defects
Correct Answer: reducing the ore with carbon in the presence of a flux
Correct Answer: 70%
Correct Answer: all of these
Correct Answer: mesomorphous material
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