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MCQs

Total Questions : 50 | Page 2 of 5 pages
Question 11. Which of the following is not a stage of mold preparation?
  1.    Mixing
  2.    Quenching
  3.    Tempering
  4.    Conditioning
 Discuss Question
Answer: Option B. -> Quenching
Answer: (b).Quenching
Question 12. Phenolic resin and fine dry silica are mixed with ________ for shell mold casting.
  1.    Warm water
  2.    Cold water
  3.    Mercury
  4.    Alcohol
 Discuss Question
Answer: Option D. -> Alcohol
Answer: (d).Alcohol
Question 13. In shell molding, the pattern and sand are inverted after _________
  1.    20-30 seconds
  2.    1-2 minutes
  3.    45-50 minutes
  4.    3-4 hours
 Discuss Question
Answer: Option A. -> 20-30 seconds
Answer: (a).20-30 seconds
Question 14. The molten wax in investment casting is at a pressure of _______
  1.    1 bar
  2.    4 bar
  3.    12 bar
  4.    26 bar
 Discuss Question
Answer: Option B. -> 4 bar
Answer: (b).4 bar
Question 15. Which of these is a refractory powder used in ceramic mold casting?
  1.    Magnesia
  2.    Helium
  3.    Zircon
  4.    Argon
 Discuss Question
Answer: Option C. -> Zircon
Answer: (c).Zircon
Question 16. _________ is the process done to reduce the void space in the sintered part.
  1.    Sizing
  2.    Coining
  3.    Machining
  4.    Infiltration
 Discuss Question
Answer: Option B. -> Coining
Answer: (b).Coining
Question 17. Impregnation of sintered parts is usually done for _________
  1.    2-5 minutes
  2.    10-20 minutes
  3.    30-50 minutes
  4.    80-120 minutes
 Discuss Question
Answer: Option B. -> 10-20 minutes
Answer: (b).10-20 minutes
Question 18. Why is sulfur in pig iron kept low?
  1.    Steel impurity
  2.    Electrical resistivity
  3.    Demagnetizing effect
  4.    Low coefficient of expansion
 Discuss Question
Answer: Option A. -> Steel impurity
Answer: (a).Steel impurity
Question 19. The size of pig iron is _________ (in inches).
  1.    10*6*2
  2.    20*9*4
  3.    15*12*6
  4.    20*14*8
 Discuss Question
Answer: Option B. -> 20*9*4
Answer: (b).20*9*4
Question 20. How much carbon does pig iron contain?
  1.    0.1-1.0%
  2.    0.3-0.7%
  3.    1-3%
  4.    3-4%
 Discuss Question
Answer: Option D. -> 3-4%
Answer: (d).3-4%

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