Question Detail
Question
For a driven oscillator, the power input has its maximum value when the phase angle δ₀ is:
Correct Answer
Option C is the correct answer.
Detailed Explanation
Page 25 states: 'For variable driving frequency ω_d, the power input has its maximum value when δ₀ = ±π/2 or tan δ₀ → ±∞.'
Hint
Think about the phase relationship between the driving force and velocity for maximum power transfer.