Exam preparation MCQs with answers

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The series and parallel resonance on L-C circuit’ differs in that_________?
  • (A)  series resistance needs a low-resistance source for sharp rise in current
  • (B)  series resonance needs a high-resistance source for sharp increase in current
  • (C)  parallel resonance needs a low-resistance source for a sharp in¬crease in impedance
  • (D)  parallel resonance needs a low-resistance source for a sharp rise in line current
The frequency of an alternating current is____________?
  • (A)  the speed with which the alternator runs
  • (B)  the number of cycles generated in one minute
  • (C)  the number of waves passing through a point in one second
  • (D)  the number of electrons passing through a point in one second