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Questions and Answers
What is the frequency range used in electrodynamic wireless power transfer (EWPT) systems?
What is the frequency range used in electrodynamic wireless power transfer (EWPT) systems?
- Radio waves
- High-frequency magnetic fields (>1 kHz)
- Low-frequency magnetic fields (<1 kHz) (correct)
- Microwaves
What is the critical coupling coefficient in EWPT devices?
What is the critical coupling coefficient in EWPT devices?
- The frequency difference between the transmitter and receiver devices
- The efficiency of the electromechanical transduction scheme
- The distance between the transmitter and receiver devices
- The magnitude of power transfer between the transmitter and receiver devices (correct)
What are the three regimes of wireless power transfer between coupled resonators with the same resonant frequencies?
What are the three regimes of wireless power transfer between coupled resonators with the same resonant frequencies?
- Over-coupled, critically coupled, under-coupled (correct)
- High-coupled, medium-coupled, low-coupled
- Strong-coupled, weak-coupled, moderate-coupled
- Tightly-coupled, loosely-coupled, moderately-coupled
