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MCQs

Total Questions : 67 | Page 5 of 7 pages
Question 41. . Electron pair bonding occurs when atoms:
  1.    lack electrons
  2.    share holes
  3.    lack holes
  4.    share electrons
 Discuss Question
Answer: Option D. -> share electrons
Question 42.  When is a P-N junction formed?
  1.    in a depletion region
  2.    in a large reverse biased region
  3.    the point at which two opposite doped materials come together
  4.    whenever there is a forward voltage drop
 Discuss Question
Answer: Option C. -> the point at which two opposite doped materials come together
Question 43. . A P-N junction mimics a closed switch when it:
  1.    has a low junction resistance
  2.    is reverse biased
  3.    cannot overcome its barrier voltage
  4.    has a wide depletion region
 Discuss Question
Answer: Option A. -> has a low junction resistance
Question 44. . How many valence electrons are in every semiconductor material?
  1.    1
  2.    2
  3.    3
  4.    4
 Discuss Question
Answer: Option D. -> 4
Question 45. . Solid state devices were first manufactured during:
  1.    World War 2
  2.    1904
  3.    1907
  4.    1960
 Discuss Question
Answer: Option D. -> 1960
Question 46. . What is a type of doping material?
  1.    extrinsic semiconductor material
  2.    pentavalent material
  3.    n-type semiconductor
  4.    majority carriers
 Discuss Question
Answer: Option B. -> pentavalent material
Question 47. . Minority carriers are many times activated by:
  1.    heat
  2.    pressure
  3.    dopants
  4.    forward bias
 Discuss Question
Answer: Option A. -> heat
Question 48. . Which of the following cannot actually move?
  1.    majority carriers
  2.    ions
  3.    holes
  4.    free electrons
 Discuss Question
Answer: Option B. -> ions
Question 49. . If conductance increases as temperature increases, this is known as a:
  1.    positive coefficient
  2.    negative current flow
  3.    negative coefficient
  4.    positive resistance
 Discuss Question
Answer: Option C. -> negative coefficient
Question 50. . What electrical characteristic of intrinsic semiconductor material is controlled by the addition of impurities?
  1.    conductivity
  2.    resistance
  3.    power
  4.    all of the above
 Discuss Question
Answer: Option A. -> conductivity

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