Discussion
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- Question
Micro-structure of a material is, generally, examined by
Options- A. naked eye
- B. optical microscope
- C. X-ray techniques
- D. none of these
- Correct Answer
- none of these
- 1. The phosphorus and sulphur in steel making can be removed by using basic bessemer process.
Options- A. Correct
- B. Incorrect Discuss
- 2. Which one of the following sets of constituents is expected in equilibrium cooling of a hyper-eutectoid steel from austenitic state?
Options- A. Ferrite and pearlite
- B. Cementite and pearlite
- C. Ferrite and bainite
- D. Cementite and martensite Discuss
- 3. Manganese bronze contains more copper than silicon bronze.
Options- A. Yes
- B. No Discuss
- 4. The process in which carbon and nitrogen both are absorbed by the metal surface to get it hardened is known as
Options- A. carburising
- B. cyaniding
- C. flame hardening
- D. induction hardening Discuss
- 5. Which of the following is a point imperfection?
Options- A. Vacancy
- B. Interstitial imperfection
- C. Frenkel imperfection
- D. all of these Discuss
- 6. Killed steels
Options- A. have minimum impurity level
- B. are produced by L-D process
- C. have almost zero percentage of phosphorus and sulphur
- D. are free from oxygen Discuss
- 7. A steel with 0.8% carbon and 100% pearlite is called
Options- A. eutectoid steel
- B. hypo-eutectoid steel
- C. hyper-eutectoid steel
- D. none of these Discuss
- 8. Vanadium when added to steel
Options- A. increases tensile strength
- B. decreases tensile strength
- C. raises critical temperature
- D. Sowers critical temperature Discuss
- 9. Steel containing 0.8 to 1.5% carbon, is known as
Options- A. mild steel
- B. dead mild steel
- C. medium carbon steel
- D. high carbon steel Discuss
- 10. The addition of magnesium to cast iron increases its
Options- A. hardness
- B. ductility and strength in tension
- C. corrosion resistance
- D. creep strength Discuss
Engineering Materials problems
Search Results
Correct Answer: Correct
Correct Answer: Cementite and pearlite
Correct Answer: No
Correct Answer: cyaniding
Correct Answer: all of these
Correct Answer: are free from oxygen
Correct Answer: eutectoid steel
Correct Answer: increases tensile strength
Correct Answer: high carbon steel
Correct Answer: ductility and strength in tension
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