question_answer 36)

  For an LCR circuit, the power transferred from the driving source to the driven oscillator is (a) Here, the power factor (b) The driving force can give no energy to the oscillator (P = 0) in some cases (c) The driving force can not syphon out (P < 0) the energy out of oscillator (d) The driving force can take away energy out of the oscillator

Answer:

  (a,b,c)Power transferred from the driving source to  the driven oscillator is . Therefore, power factor For watt less component the driving force shall give no energy to the oscillator. Further, the driving force cannot syphon out energy out of the oscillator, i.e., P cannot be negative. Choices (a), (b), (c) are correct.