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- Question
Silicon is added in low carbon steels to
Options- A. make the steel tougher and harder
- B. make the steel of good bending qualities
- C. raise the yield point
- D. all of these
- Correct Answer
- make the steel tougher and harder
- 1. Steel containing upto 0.15% carbon, is known as
Options- A. mild steel
- B. dead mild steel
- C. medium carbon steel
- D. high carbon steel Discuss
- 2. In high speed steels, vanadium adds to the property of red hardness and tungsten and chromium add to high wear resistance.
Options- A. True
- B. False Discuss
- 3. In a crystalline material, atoms are arranged in definite and orderly manner and form.
Options- A. Agree
- B. Disagree Discuss
- 4. When a steel containing more than 0.8% carbon is cooled slowly below the lower critical point, it consists of
Options- A. mainly pearlite
- B. mainly ferrite
- C. ferrite and pearlite
- D. pearlite and cementite Discuss
- 5. Babbit metal contains
Options- A. 50% tin and 50% antimony
- B. 66% tin, 30% copper and 4% antimony
- C. 88% tin, 4% copper and 8% antimony
- D. 92% tin, 6% copper and 2% antimony Discuss
- 6. Which of the following material has maximum malleability?
Options- A. Lead
- B. Soft steel
- C. Wrought iron
- D. Copper Discuss
- 7. Which of the following iron exists at 910° C?
Options- A. ?-iron
- B. ?-iron
- C. ?-iron
- D. ?-iron Discuss
- 8. The austenitic stainless steel contains
Options- A. 18% chromium and 8% nickel
- B. 8% chromium and 18% nickel
- C. 14% chromium and 0.35% carbon
- D. 14% nickel and 0.35% carbon Discuss
- 9. Which of the following is a mesomorphous material?
Options- A. Mica
- B. Silver
- C. Lead
- D. Brass Discuss
- 10. In a face centred cubic space lattice, there are
Options- A. nine atoms out of which eight atoms are located at the corners of the cube and one atom at its centre
- B. fourteen atoms out of which eight atoms are located at the corners of the cube and six atoms at the centres of six faces
- C. seventeen atoms out of which twelve atoms are located at the twelve corners of the hexagonal prism, one atom at the centre of each of the two hexagonal faces and three atoms are symmetrically arranged in the body of the cell
- D. none of the above Discuss
Engineering Materials problems
Search Results
Correct Answer: dead mild steel
Correct Answer: True
Correct Answer: Agree
Correct Answer: pearlite and cementite
Correct Answer: 88% tin, 4% copper and 8% antimony
Correct Answer: Lead
Correct Answer: ?-iron
Correct Answer: 18% chromium and 8% nickel
Correct Answer: Mica
Correct Answer: fourteen atoms out of which eight atoms are located at the corners of the cube and six atoms at the centres of six faces
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