MANUFACTURING AND PRODUCTION TECHNOLOGY MULTIPLE CHOICE QUESTIONS
Q41. Which one of the following metals is best suited for electro-forming?
Q42. The best suited metal for electro-forming is one which has the property of
(a) good bearing surface
(b) good reproducibility
(c) resistance to corrosion
(d) all of the above
Q43. Which one is the correct statement about electro-forming?
(a) This is an economical method of production.
(b) Rate of production is high.
(c) High surface finish can be obtained.
(d) Process is limited only to very thick parts.
Q44. The face angles of the teeth of a broaching tool for brass is approximately equal to
(a) 6 to 8°
(d) – 5 to + 5°.
Q45. In grinding operation, for grinding harder material
(a) fine grain size is used
(b) coarser grain size is used
(c) medium grain size is used
(d) none of the above.
Q46. Which one is the wrong statement about electro-forming?
(a) High dimensional accuracy in complicated shaped parts can be obtained.
(b) Parts of any thickness can be easily made.
(c) Any amount of purity can be achieved.
(d) Cost of production is very low.
Q47. The feed in drilling operation is expressed as
Q48. Steels, in which no gas evolution occurs on solidification, are known as
(a) stainless steels
(b) killed steels
(c) carbon steels
(d) alloy steels.
Q49. For drilling aluminium and copper, the lubricant used is
(b) soda water
Q50. For drilling malleable carbon, the lubricant used is
(b) soda water
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