Live Quiz Arena
🎁 1 Free Round Daily
⚡ Enter ArenaQuestion
← ScienceWhich mechanism causes voltage spikes when a large industrial motor abruptly shuts down?
A)Inductive flyback generates reverse current✓
B)Capacitive reactance lowers impedance broadly
C)Increased eddy currents resist change
D)Transformer core saturates uncontrollably faster
💡 Explanation
Inductive flyback generates voltage spikes because the collapsing magnetic field during shutdown induces a large reverse EMF in the motor windings; therefore, the voltage spikes surge, rather than diminished impedance due circuit capacitance slowly dissipating the magnetic fields.
🏆 Up to £1,000 monthly prize pool
Ready for the live challenge? Join the next global round now.
*Terms apply. Skill-based competition.
Related Questions
Browse Science →- Which outcome results during a lightning strike near an ungrounded radio antenna array when the atmospheric electric field collapses?
- Which mechanism leads to reduced efficiency when rapid cooling induces crystal lattice defects in thermoelectric generators?
- Which consequence results when high vacuum lowers boiling points?
- Which effect on an industrial dehumidifier utilizing a desiccant wheel running with increased angular velocity and insufficient airflow results when saturated?
- Which consequence results when electron density overlaps in graphene?
- Which consequence results when anisotropic thermal expansion in sapphire (Al₂O₃) single crystal gyro components exceeds design tolerances?