Which risk increases when a three-phase motor drive circuit uses silicon controlled rectifiers at high switching frequencies?

💡 Explanation

When SCRs switch at high frequencies, harmonic distortion increases because their non-linear switching behavior creates voltage and current harmonics that propagate into the power grid. Therefore harmonic distortion results, rather than torque reduction, eddy currents, or EMI which require specific motor design flaws or shielding issues.

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