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MCQs

Total Questions : 68 | Page 6 of 7 pages
Question 51. Which of the following does not affects the pattern of segregation?
  1.    Freezing rate
  2.    Motion of crystals
  3.    Rate of solidification
  4.    Model of development of grain structure
 Discuss Question
Answer: Option C. -> Rate of solidification
Answer: (c).Rate of solidification
Question 52. On which factor does the recrystallization temperature depend?
  1.    Purity
  2.    Density
  3.    Melting point
  4.    Grain size
 Discuss Question
Answer: Option A. -> Purity
Answer: (a).Purity
Question 53. Plastic working in the temperature range of 0.3-0.5 Tₘ is called _________
  1.    Hot work
  2.    Cold work
  3.    Emboss
  4.    Sheet metal
 Discuss Question
Answer: Option B. -> Cold work
Answer: (b).Cold work
Question 54. What is the glass transition temperature of Nylon 6,6?
  1.    -120°C
  2.    50°C
  3.    85°C
  4.    210°C
 Discuss Question
Answer: Option B. -> 50°C
Answer: (b).50°C
Question 55. There is _________ change in crystal structure during recrystallization.
  1.    Major
  2.    Minor
  3.    No
  4.    Constant
 Discuss Question
Answer: Option C. -> No
Answer: (c).No
Question 56. Which defect does the following image denote?Which Defect Does The Following Image Denote?
  1.    Orange peel
  2.    Sinking
  3.    Burr and bend
  4.    Wrinkling
 Discuss Question
Answer: Option A. -> Orange peel
Answer: (a).Orange peel
Question 57. Which defect is illustrated in the below figure?Which Defect Is Illustrated In The Below Figure?
  1.    Earing
  2.    Sinking
  3.    Burr and bend
  4.    Strain hardening
 Discuss Question
Answer: Option A. -> Earing
Answer: (a).Earing
Question 58. How is the critical radius of particles calculated?How Is The Critical Radius Of Particles Calculated?
  1.    a
  2.    b
  3.    c
  4.    d
 Discuss Question
Answer: Option B. -> b
Answer: (b).b
Question 59. How can cryogenic temperatures lower than 30,000K be measured?
  1.    Silicon diode
  2.    Calorimeter
  3.    Superconducting granules
  4.    Roton detector
 Discuss Question
Answer: Option A. -> Silicon diode
Answer: (a).Silicon diode
Question 60. Which of the following is an application of hot working?
  1.    Shapes the metal
  2.    Finishing
  3.    Thinning of material
  4.    Dimensional accuracy
 Discuss Question
Answer: Option A. -> Shapes the metal
Answer: (a).Shapes the metal

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