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- Question
In low carbon steels, presence of small quantities of sulphur improves
Options- A. weldability
- B. formability
- C. machinability
- D. hardenability
- Correct Answer
- machinability
- 1. In flame hardening, oxy-acetylene flame is used.
Options- A. Yes
- B. No Discuss
- 2. 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
- 3. Cartidge brass can be
Options- A. cold rolled into sheets
- B. drawn into wires
- C. formed into tube
- D. any one of these Discuss
- 4. The austenite is a solid solution of carbon or iron carbide in gamma-iron.
Options- A. Correct
- B. Incorrect Discuss
- 5. Blast furnace is used to produce
Options- A. pig iron
- B. cast iron
- C. wrought iron
- D. steel Discuss
- 6. Phosphorus is added in low carbon steels to raise its yield point.
Options- A. True
- B. False Discuss
- 7. The defect which takes place due to imperfect packing of atoms during crystallisation is known as
Options- A. line defect
- B. surface defect
- C. point defect
- D. none of these Discuss
- 8. The material in which the atoms are arranged chaotically, is called
Options- A. amorphous material
- B. mesomorphous material
- C. crystalline material
- D. none of these Discuss
- 9. Free cutting steels
Options- A. contain carbon in free from
- B. require minimum cutting force
- C. is used where rapid machining is the prime requirement
- D. can be cut freely Discuss
- 10. Which of the following metal shrinks most from molten state to solid state?
Options- A. Cast iron
- B. Cast steel
- C. Brass
- D. Admirality metal Discuss
Engineering Materials problems
Search Results
Correct Answer: Yes
Correct Answer: True
Correct Answer: any one of these
Correct Answer: Correct
Correct Answer: pig iron
Correct Answer: True
Correct Answer: point defect
Correct Answer: amorphous material
Correct Answer: is used where rapid machining is the prime requirement
Correct Answer: Admirality metal
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