level: Forced vibrations and resonance
Questions and Answers List
level questions: Forced vibrations and resonance
| Question | Answer |
|---|---|
| What are forced vibrations | Oscillation due to an external periodic driving force |
| What is the driving bfrequnecy | The frequency of forced oscillations |
| What is the natural frequency | Frequency of an oscillation when the oscillating system is allowed to oscillate freely |
| As damping's increased what happens to resonance peak and the general curve | As damping is increased, resonance peak lowers, the curve broadens and moves slightly to the left |
| Whats resonance | When the driving frequency = the natural frequency |
| What's the difference between driving and actual frequency of a system at resonance | 0.5 pie out of phase |
| Define free vibrations | Oscilations due inly to internal forces |
| Explain whats meant by damping | Force that opposes motion (of the oscilator) |