Discussion
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- Question
Quenching is not necessary when hardening is done by
Options- A. case hardening
- B. flame hardening
- C. nitriding
- D. any one of these
- Correct Answer
- nitriding
- 1. Which of the following steel making process is being adopted at Rourkela Steel Plant?
Options- A. Bessemer process
- B. Open-hearth process
- C. Electric process
- D. L-D process Discuss
- 2. Spheroidal grey cast iron has graphite flakes.
Options- A. True
- B. False Discuss
- 3. Grey cast iron has
Options- A. carbon in the form of free graphite
- B. high tensile strength
- C. low compressive strength
- D. all of these Discuss
- 4. The steel widely used for motor car crankshafts is
Options- A. nickel steel
- B. chrome steel
- C. nickel-chrome steel
- D. silicon steel Discuss
- 5. The stiffness is the ability of a material to resist
Options- A. deformation under stress
- B. fracture due to high impact loads
- C. externally applied forces with breakdown or yielding
- D. none of the above Discuss
- 6. In induction hardening __________ is high.
Options- A. current
- B. voltage
- C. frequency
- D. temperature Discuss
- 7. The metal suitable for bearings subjected to light loads, is
Options- A. silicon bronze
- B. white metal
- C. monel metal
- D. phosphor bronze Discuss
- 8. Monel metal is an alloy of
Options- A. nickel and copper
- B. nickel and chromium
- C. nickel, chromium and iron
- D. copper and chromium Discuss
- 9. The toughness of a material __________ when it is heated.
Options- A. remains same
- B. decreases
- C. increases Discuss
- 10. A steel with carbon above 0.8% is known as hyper-eutectoid steel.
Options- A. Agree
- B. Disagree Discuss
Engineering Materials problems
Search Results
Correct Answer: L-D process
Correct Answer: True
Correct Answer: carbon in the form of free graphite
Correct Answer: chrome steel
Correct Answer: deformation under stress
Correct Answer: frequency
Correct Answer: phosphor bronze
Correct Answer: nickel and copper
Correct Answer: decreases
Correct Answer: Agree
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