Question
AC flow is improved by supplying DC to a "saturable" type of these devices. For 10 points each:
[10m] Name these devices whose dissipative characteristic is measured by the Q factors, which was introduced while studying them. These devices produce magnetic fields to oppose changes in current.
ANSWER: inductors [or coils or chokes; prompt on saturable reactors or reactors or by asking "what is a more common name?"]
[10e] This scientist, who names a "law of induction," invented electromagnetic field-blocking "cages" that are used in microwave ovens.
ANSWER: Michael Faraday
[10h] This quantity for an LC circuit equals one over the square root of LC. This quantity exists for the sinusoidal driving force of a damped harmonic oscillator if the damping ratio exceeds one over root-two.
ANSWER: resonant frequency [or resonance frequency; accept natural frequency; prompt on frequency or omega-sub-r or omega-sub-zero or omega-nought]
<Science - Physics>
Data
Summary
| Tournament | Edition | Exact Match? | Heard | PPB | Easy % | Medium % | Hard % |
|---|---|---|---|---|---|---|---|
| 2025 PACE NSC | 06/07/2025 | Y | 38 | 16.32 | 111% | 53% | 0% |