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- Question
In flame hardening, oxy-acetylene flame is used.
Options- A. Yes
- B. No
- Correct Answer
- Yes
- 1. 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
- 2. Cartidge brass can be
Options- A. cold rolled into sheets
- B. drawn into wires
- C. formed into tube
- D. any one of these Discuss
- 3. The austenite is a solid solution of carbon or iron carbide in gamma-iron.
Options- A. Correct
- B. Incorrect Discuss
- 4. Blast furnace is used to produce
Options- A. pig iron
- B. cast iron
- C. wrought iron
- D. steel Discuss
- 5. Bronze is an alloy of
Options- A. copper and zinc
- B. copper and tin
- C. copper, tin and zinc
- D. none of these Discuss
- 6. In low carbon steels, presence of small quantities of sulphur improves
Options- A. weldability
- B. formability
- C. machinability
- D. hardenability Discuss
- 7. Phosphorus is added in low carbon steels to raise its yield point.
Options- A. True
- B. False Discuss
- 8. 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
- 9. 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
- 10. 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
Engineering Materials problems
Search Results
Correct Answer: True
Correct Answer: any one of these
Correct Answer: Correct
Correct Answer: pig iron
Correct Answer: copper and tin
Correct Answer: machinability
Correct Answer: True
Correct Answer: point defect
Correct Answer: amorphous material
Correct Answer: is used where rapid machining is the prime requirement
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