513. Unused portions of inductances in receivers are ____ to reduce any losses that might occur in these unused windings:

Unused inductor windings in receivers are shorted to prevent induced voltages and circulating currents that cause losses. This electrical connection maintains a consistent potential, eliminating parasitic coil behavior and unwanted signal interaction. Physically removing windings is impractical, and insulation or straightening does not prevent these issues. Therefore, shorting is the correct method to minimize losses and maintain receiver performance.