Q7.11Multiple correct
For an LCR circuit, the power transferred from the driving source to the driven oscillator is P = I2Z cos φ.
- (a)Here, the power factor cos φ ≥ 0, P ≥ 0.
- (b)The driving force can give no energy to the oscillator (P = 0) in some cases.
- (c)The driving force cannot syphon out (P < 0) the energy out of oscillator.
- (d)The driving force can take away energy out of the oscillator.