Question

The $Q$ factor for a damped oscillator is given by the

• A. Ratio of energy stored per cycle to the initial energy
• B. Ratio of energy dissipated per cycle to the initial energy
• C. Ratio of energy stored per cycle to the energy dissipated per cycle
• D. Ratio of energy dissipated per cycle to the energy stored per cycle
• E. Ratio of the damping coefficient to the natural frequency

Answer 1

Answer: (C)

Quality factor It is defined as the $2 \pi$ times the ratio of the energy stored in the system to the energy lost per period
i.e., $Q=2 \pi \frac{\text { energy stored in system }}{\text { energy loss per period }}$