Discussion
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- Question
In induction hardening, the depth of hardening is controlled by controlling the voltage.
Options- A. Correct
- B. Incorrect
- Correct Answer
- Correct
- 1. When elements like nickel, chromium, copper and molybdenum are added to the molten cast iron, it produces
Options- A. white cast iron
- B. nodular cast iron
- C. malleable cast iron
- D. alloy cast iron Discuss
- 2. The strength is the ability of a material to resist
Options- A. deformation under stress
- B. externally applied forces with breakdown or yielding
- C. fracture due to high impact loads
- D. none of these Discuss
- 3. Induction hardening is basically a
Options- A. carburising process
- B. surface hardening process
- C. core-hardening process
- D. none of these Discuss
- 4. The carbon in the pig iron varies from
Options- A. 0.1 to 0.5%
- B. 0.5 to 1%
- C. 1 to 5%
- D. 5 to 10% Discuss
- 5. Pearlite consists of
Options- A. 13% carbon and 87% ferrite
- B. 13% cementite and 87% ferrite
- C. 13% ferrite and 87% cementite
- D. 6.67% carbon and 93.33% iron Discuss
- 6. Bronze is an alloy of
Options- A. copper and zinc
- B. copper and tin
- C. copper, tin and zinc
- D. none of these Discuss
- 7. Blast furnace is used to produce
Options- A. pig iron
- B. cast iron
- C. wrought iron
- D. steel Discuss
- 8. The austenite is a solid solution of carbon or iron carbide in gamma-iron.
Options- A. Correct
- B. Incorrect Discuss
- 9. Cartidge brass can be
Options- A. cold rolled into sheets
- B. drawn into wires
- C. formed into tube
- D. any one of these Discuss
- 10. In normalising process, the hypo-eutectiod steel is heated from 30° C to 50° C above the upper critical temperature and then cooled in still air.
Options- A. True
- B. False Discuss
Engineering Materials problems
Search Results
Correct Answer: alloy cast iron
Correct Answer: externally applied forces with breakdown or yielding
Correct Answer: surface hardening process
Correct Answer: 1 to 5%
Correct Answer: 13% cementite and 87% ferrite
Correct Answer: copper and tin
Correct Answer: pig iron
Correct Answer: Correct
Correct Answer: any one of these
Correct Answer: True
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