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- Question
The machinability of steel is improved by adding
Options- A. nickel
- B. chromium
- C. nickel and chromium
- D. sulphur, lead and phosphorus
- Correct Answer
- sulphur, lead and phosphorus
- 1. Combined carbon in iron makes the metal
Options- A. soft and gives coarse grained crystalline structure
- B. soft and gives a fine grained crystalline structure
- C. hard and gives a coarse grained crystalline structure
- D. hard and gives a fine grained crystalline structure Discuss
- 2. The property of a material essential for spring materials is
Options- A. stiffness
- B. ductility
- C. resilience
- D. plasticity Discuss
- 3. The type of space lattice found in alpha-iron is
Options- A. face centred cubic space lattice
- B. body centred cubic space lattice
- C. close packed hexagonal space lattice
- D. none of these Discuss
- 4. 18-4-1 high speed steel contains
Options- A. vanadium 4%, chromium 18% and tungsten 1%
- B. vanadium 1%, chromium 4% and tungsten 18%
- C. vanadium 18%, chromium 1% and tungsten 4%
- D. none of the above Discuss
- 5. Hindalium is an alloy of aluminium and magnesium with a small quantity of chromium.
Options- A. Agree
- B. Disagree Discuss
- 6. The aluminium alloy, mainly used, for anodized utensil manufacture, is
Options- A. duralumin
- B. Y-alloy
- C. magnalium
- D. hindalium Discuss
- 7. The blade of a power saw is made of
Options- A. boron steel
- B. high speed steel
- C. stainless steel
- D. malleable cast iron Discuss
- 8. The alloying element which can replace tungsten in high speed steels is
Options- A. nickel
- B. vanadium
- C. cobalt
- D. molybdenum Discuss
- 9. An aluminium alloy with 11% silicon is used for making engine pistons by die casting technique.
Options- A. Yes
- B. No Discuss
- 10. The ability of a material to undergo large permanent deformation with the application of a tensile force, is called ductility.
Options- A. Correct
- B. Incorrect Discuss
Engineering Materials problems
Search Results
Correct Answer: hard and gives a fine grained crystalline structure
Correct Answer: resilience
Correct Answer: body centred cubic space lattice
Correct Answer: vanadium 1%, chromium 4% and tungsten 18%
Correct Answer: Agree
Correct Answer: hindalium
Correct Answer: high speed steel
Correct Answer: molybdenum
Correct Answer: Yes
Correct Answer: Correct
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