Discussion
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- Question
Which of the following is a case hardening process?
Options- A. Carburising
- B. Cyaniding
- C. Nitriding
- D. all of these
- Correct Answer
- all of these
- 1. The approximate height of a blast furnace is
Options- A. 10 m
- B. 20 m
- C. 30 m
- D. 40 m Discuss
- 2. German silver contains
Options- A. 70% copper and 30% zinc
- B. 60% copper and 40% zinc
- C. 59% copper, 40% zinc and 1% tin
- D. 60.45% copper, 35.2% zinc and 5.35% nickel Discuss
- 3. The maximum solubility of carbon in austenite is 1.7% at 1130° C.
Options- A. Yes
- B. No Discuss
- 4. Chilled cast iron is produced
Options- A. by adding magnesium to molten cast iron
- B. by quick cooling of molten cast iron
- C. from white cast iron by annealing process
- D. none of these Discuss
- 5. The addition of manganese to aluminium improves corrosion resistance.
Options- A. Correct
- B. Incorrect Discuss
- 6. A fine grained steel
Options- A. is less tough and has a greater tendency to distort during heat treatment
- B. is more ductile and has a less tendency to distort during heat treatment
- C. is less tough and has a less tendency to distort during heat treatment
- D. is more ductile and has a greater tendency to distort during heat treatment Discuss
- 7. In a unit cell of a body centred cubic space lattice, there are __________ atoms.
Options- A. six
- B. nine
- C. fourteen
- D. seventeen Discuss
- 8. The percentage of phosphorus is phosphor bronze is
Options- A. 0.1
- B. 1
- C. 11.1
- D. 98 Discuss
- 9. The high speed steel has __________ percentage of tungsten.
Options- A. maximum
- B. minimum Discuss
- 10. In the austempering process of heat treatment, austenite changes into
Options- A. martensite
- B. troostite
- C. sorbite
- D. bainite Discuss
Engineering Materials problems
Search Results
Correct Answer: 30 m
Correct Answer: 60.45% copper, 35.2% zinc and 5.35% nickel
Correct Answer: Yes
Correct Answer: by quick cooling of molten cast iron
Correct Answer: Correct
Correct Answer: is more ductile and has a less tendency to distort during heat treatment
Correct Answer: nine
Correct Answer: 0.1
Correct Answer: maximum
Correct Answer: bainite
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