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MCQs

Total Questions : 50 | Page 5 of 5 pages
Question 41. Lost wax process is used for making items of ___________
  1.    Brass and bronze
  2.    Tin
  3.    Cadmium
  4.    Bismuth
 Discuss Question
Answer: Option A. -> Brass and bronze
Answer: (a).Brass and bronze
Question 42. Permanent mold casting is otherwise known as _____________
  1.    Pressure die casting
  2.    Gravity die casting
  3.    Centrifugal casting
  4.    Continuous casting
 Discuss Question
Answer: Option B. -> Gravity die casting
Answer: (b).Gravity die casting
Question 43. Centrifugal casting is used for making _________
  1.    Solid casting
  2.    U-tubes
  3.    Washing machine parts
  4.    Hollow casting
 Discuss Question
Answer: Option D. -> Hollow casting
Answer: (d).Hollow casting
Question 44. How can cracks in casting be avoided?
  1.    Soft ramming
  2.    Correct pouring temperature
  3.    Tapered edges
  4.    Correct gating system
 Discuss Question
Answer: Option C. -> Tapered edges
Answer: (c).Tapered edges
Question 45. In powder metallurgy, how is the powder for brittle materials prepared?
  1.    Pulverization
  2.    Atomization
  3.    Electrolysis
  4.    Fusion
 Discuss Question
Answer: Option A. -> Pulverization
Answer: (a).Pulverization
Question 46. What is the disadvantage of atomization?
  1.    Electrical resistivity
  2.    Oxidation
  3.    Poor mechanical strength
  4.    Coarse grains
 Discuss Question
Answer: Option B. -> Oxidation
Answer: (b).Oxidation
Question 47. For cemented carbide cutting tools, the compact is heated at __________
  1.    650 F
  2.    1200 F
  3.    1989 F
  4.    2750 F
 Discuss Question
Answer: Option D. -> 2750 F
Answer: (d).2750 F
Question 48. In gravity compaction, the die is made of _________
  1.    Graphite
  2.    Lead
  3.    Charcoal
  4.    Quartz
 Discuss Question
Answer: Option A. -> Graphite
Answer: (a).Graphite
Question 49. Sintering is performed ___________
  1.    At room temperature
  2.    Below melting point
  3.    Above boiling point
  4.    At cryogenic temperature
 Discuss Question
Answer: Option B. -> Below melting point
Answer: (b).Below melting point
Question 50. Electrolysis usually used for materials like _________
  1.    Zinc, cadmium
  2.    Aluminum, nickel
  3.    Silver, tin
  4.    Silicon, antimony
 Discuss Question
Answer: Option C. -> Silver, tin
Answer: (c).Silver, tin

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