Extra exam question E7H07

WhyAn oscillator's microphonic responses can be reduced by mechanically isolating the oscillator circuitry from its enclosure. Mechanically isolating an oscillator's circuitry from its enclosure, using shock mounts or similar vibration-damping techniques, reduces how much external mechanical vibration reaches the sensitive oscillator components, directly reducing microphonic frequency shifts, answer D. Using NP0 capacitors addresses thermal drift rather than microphonics, reducing power supply noise addresses a different noise source, and increasing gain doesn't address mechanical vibration sensitivity at all.