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MCQs

Total Questions : 55 | Page 6 of 6 pages
Question 51. In an impedance smith chart, a clockwise movement along a constant resistance circle gives rise to
  1.    Decrease in the value of reactance
  2.    An increase in the value of reactance
  3.    No change in the reactance value
  4.    No change in the impedance value
 Discuss Question
Answer: Option B. -> An increase in the value of reactance
Question 52. Divergence of vector field is net outward flux of a vector per unit ______
  1.    surface area
  2.    volume
  3.    length
  4.    none of these
 Discuss Question
Answer: Option B. -> volume
Question 53. The frequency range for satellite communication is
  1.    3 to 30 kHz
  2.    300 to 3000 kHz
  3.    3000 to 30000 MHz
  4.    30000 to 300000 MHz
 Discuss Question
Answer: Option C. -> 3000 to 30000 MHz
Question 54. The sparking between two electrical contacts can be reduced byinserting a
  1.    Capacitor in parallel with contacts
  2.    Capacitor in series with each contact
  3.    Resistance in line
  4.    None of the above
 Discuss Question
Answer: Option A. -> Capacitor in parallel with contacts
Question 55. The dielectric constant (relative permittivity) of glass is given by
  1.    0.1 to 0.4
  2.    0.5 to 1.0
  3.    2.0 to 4.0
  4.    5 to 100
 Discuss Question
Answer: Option D. -> 5 to 100

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