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- Question
Iron-carbon alloys containing 4.3% carbon are known as hypo-eutectic cast irons.
Options- A. Correct
- B. Incorrect
- Correct Answer
- Incorrect
- 1. Cast iron has
Options- A. high compressive strength
- B. excellent machinability
- C. good casting characteristic
- D. all of these Discuss
- 2. The machine tool guide ways are usually hardened by
Options- A. vacuum hardening
- B. martempering
- C. induction hardening
- D. flame hardening Discuss
- 3. A steel alloy containing 36% nickel is called
Options- A. stainless steel
- B. high speed steel
- C. invar
- D. heat resisting steel Discuss
- 4. The cutting tools are made from
Options- A. nickel steel
- B. chrome steel
- C. nickel-chrome steel
- D. high speed steel Discuss
- 5. 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 Discuss
- 6. A steel with 0.8% carbon is known as
Options- A. eutectoid steel
- B. hyper-eutectoid steel
- C. hypo-eutectiod steel
- D. none of these Discuss
- 7. The ductility is the property of a material due to which it
Options- A. can be drawn into wires
- B. breaks with little permanent distortion
- C. can be rolled or hammered into thin sheets
- D. can resist fracture due to high impact loads Discuss
- 8. For the pipe fitting like elbow, tee, union etc., which of the following is preferred?
Options- A. Pig iron
- B. Malleable iron
- C. Spheroidal graphite cast iron
- D. High carbon steel Discuss
- 9. Phosphor bronze has
Options- A. high resistance to corrosion
- B. good wearing qualities and high elasticity
- C. valuable cold working property
- D. all of these Discuss
- 10. The temperature point at which the change ends on heating the steel is called
Options- A. lower critical point
- B. upper critical point
- C. point of recalescence
- D. point of decalescence Discuss
Engineering Materials problems
Search Results
Correct Answer: all of these
Correct Answer: flame hardening
Correct Answer: invar
Correct Answer: high speed steel
Correct Answer: red flame does not occur during the operation of a bessemer converter
Correct Answer: eutectoid steel
Correct Answer: can be drawn into wires
Correct Answer: Malleable iron
Correct Answer: good wearing qualities and high elasticity
Correct Answer: upper critical point
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