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MCQs

Total Questions : 500 | Page 6 of 50 pages
Question 51. Which inductor is used at high frequencies?
  1.    Iron alloy cored
  2.    Sheet steel cored
  3.    Ceramic cored
  4.    Cast iron cored
 Discuss Question
Answer: Option C. -> Ceramic cored
Question 52. A characteristic property of crystal is its periodicity of structure.
  1.    True
  2.    False
 Discuss Question
Answer: Option A. -> True
Question 53. An atom of a rare gas is placed is an electric field E. Then
  1.    The nucleus will be shifted in the direction of E by an amount which is independent of E.
  2.    The nucleus will be shifted in a direction opposite to that of E.
  3.    The nucleus will not be shifted.
  4.    The nucleus will be shifted in the direction of E by an amount which is proportional to E.
 Discuss Question
Answer: Option D. -> The nucleus will be shifted in the direction of E by an amount which is proportional to E.
Question 54. Above a certain temperature, the specific heat of a metal becomes constant. This temperature is called
  1.    Neel temperature
  2.    Curie temperature
  3.    Debye temperature
  4.    Transition temperature
 Discuss Question
Answer: Option C. -> Debye temperature
Question 55. The dielectric losses do not depend on frequency.
  1.    True
  2.    False
 Discuss Question
Answer: Option B. -> False
Question 56. The rule that resistivity of conductors can be separated into two parts viz. temperature independent and temperature dependent is known as
  1.    Onne’s rule
  2.    Curie rule
  3.    Matthiessen’s rule
  4.    Debye rule
 Discuss Question
Answer: Option C. -> Matthiessen’s rule
Question 57. Debye temperature of metals is
  1.    About 10 K
  2.    About 2 K
  3.    About 600 K
  4.    About 200 K
 Discuss Question
Answer: Option D. -> About 200 K
Question 58. A leakage capacitor can be represented by a capacitance C and resistance R in parallel C.
  1.    False
  2.    True
 Discuss Question
Answer: Option B. -> True
Question 59. Piezoelectricity means the slight change in dimensions of a specimen when an electric field is applied.
  1.    True
  2.    False
 Discuss Question
Answer: Option A. -> True
Question 60. Many compounds also exhibit semiconducting properties.
  1.    False
  2.    True
 Discuss Question
Answer: Option B. -> True

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