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MCQs

Total Questions : 120 | Page 6 of 12 pages
Question 51. A metal with temperature coefficient of resistance has a value 200, its initial resistance is given by 40Ω. For an increase in 30°C to 35°C what will be the final resistance value?
  1.    40 KΩ
  2.    4 KΩ
  3.    40 Ω
  4.    400 Ω
 Discuss Question
Answer: Option A. -> 40 KΩ
Answer: (a).40 KΩ
Question 52. Thermistors may be in wire form.
  1.    True
  2.    False
  3.    May be True or False
  4.    Can't say
 Discuss Question
Answer: Option B. -> False
Answer: (b).False
Question 53. Which of the following is correct for thermistors?
  1.    Positive temperature coefficient of resistance
  2.    Negative temperature coefficient of resistance
  3.    Unpredictable temperature coefficient
  4.    None of the mentioned
 Discuss Question
Answer: Option B. -> Negative temperature coefficient of resistance
Answer: (b).Negative temperature coefficient of resistance
Question 54. Which of the following can be used to measure using thermistors?
  1.    Very low
  2.    In-between 100Ω and 1MΩ
  3.    Greater than 1MΩ
  4.    None of the mentioned
 Discuss Question
Answer: Option B. -> In-between 100Ω and 1MΩ
Answer: (b).In-between 100Ω and 1MΩ
Question 55. Thermistors have high stability.
  1.    True
  2.    False
  3.    May be True or False
  4.    Can't say
 Discuss Question
Answer: Option B. -> False
Answer: (b).False
Question 56. Cold cathode ionization vacuum gauges are more accurate than hot cathode ionization vacuum gauges.
  1.    True
  2.    False
  3.    May be True or False
  4.    Can't say
 Discuss Question
Answer: Option B. -> False
Answer: (b).False
Question 57. Which of the following cannot be measured using ionization transducer?
  1.    Vacuum pressure
  2.    Gaseous pressure
  3.    Displacement
  4.    None of the mentioned
 Discuss Question
Answer: Option D. -> None of the mentioned
Answer: (d).None of the mentioned
Question 58. Which of the following applications ionization chamber is used?
  1.    For detection of nuclear radiation
  2.    For better stability
  3.    For storing inert gas
  4.    For ionizing gas
 Discuss Question
Answer: Option A. -> For detection of nuclear radiation
Answer: (a).For detection of nuclear radiation
Question 59. Which of the following is a radioactive vacuum gauge?
  1.    Cold cathode gauge
  2.    Hot cathode gauge
  3.    Non ionization gauge
  4.    None of the mentioned
 Discuss Question
Answer: Option A. -> Cold cathode gauge
Answer: (a).Cold cathode gauge
Question 60. Which of the following represents a mass absorption coefficient?
  1.    Ratio of linear absorption coefficient to density
  2.    Product of absorption coefficient and density
  3.    Linear absorption coefficient
  4.    Product of linear absorption coefficient and mass
 Discuss Question
Answer: Option A. -> Ratio of linear absorption coefficient to density
Answer: (a).Ratio of linear absorption coefficient to density

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