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- Question
The red flame during the operation of a bessemer converter indicates that the
Options- A. air is burning out silicon and manganese
- B. silicon and manganese has burned out and carbon has started oxidising
- C. converter must be tilted to remove the contents of the converter
- D. red flame does not occur during the operation of a bessemer converter
- Correct Answer
- red flame does not occur during the operation of a bessemer converter
- 1. Nichrome contains more iron than Inconel.
Options- A. Agree
- B. Disagree Discuss
- 2. In the austempering process of heat treatment, austenite changes into
Options- A. martensite
- B. troostite
- C. sorbite
- D. bainite Discuss
- 3. The high speed steel has __________ percentage of tungsten.
Options- A. maximum
- B. minimum Discuss
- 4. The percentage of phosphorus is phosphor bronze is
Options- A. 0.1
- B. 1
- C. 11.1
- D. 98 Discuss
- 5. In a unit cell of a body centred cubic space lattice, there are __________ atoms.
Options- A. six
- B. nine
- C. fourteen
- D. seventeen Discuss
- 6. The cutting tools are made from
Options- A. nickel steel
- B. chrome steel
- C. nickel-chrome steel
- D. high speed steel Discuss
- 7. A steel alloy containing 36% nickel is called
Options- A. stainless steel
- B. high speed steel
- C. invar
- D. heat resisting steel Discuss
- 8. The machine tool guide ways are usually hardened by
Options- A. vacuum hardening
- B. martempering
- C. induction hardening
- D. flame hardening Discuss
- 9. Cast iron has
Options- A. high compressive strength
- B. excellent machinability
- C. good casting characteristic
- D. all of these Discuss
- 10. Iron-carbon alloys containing 4.3% carbon are known as hypo-eutectic cast irons.
Options- A. Correct
- B. Incorrect Discuss
Engineering Materials problems
Search Results
Correct Answer: Agree
Correct Answer: bainite
Correct Answer: maximum
Correct Answer: 0.1
Correct Answer: nine
Correct Answer: high speed steel
Correct Answer: invar
Correct Answer: flame hardening
Correct Answer: all of these
Correct Answer: Incorrect
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