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Electrical Engineering QUESTION #2153
Question 1
In Power Electronics, a Freewheeling Diode is used in an inductive load circuit to:
  • Increase the output voltage
  • Prevent high-voltage spikes $L\frac{di}{dt}$ during turn-off✔️
  • Rectify the AC input
  • Smooth the ripple in the capacitor
Correct Answer Explanation
The diode provides a path for the inductive current to continue flowing when the switch opens, preventing damaging $L\frac{di}{dt}$ voltage spikes.