Devices with built-in ___ loads are designed to correct harmonics.

Devices with built-in ___ loads are designed to correct harmonics.

• A. Isolation current
• B. Low resistance
• C. High THD
• D. Low distortion

Answer: (D)

Harmonics come from nonlinear loads that draw current with a waveform far from a pure sine. Devices that correct harmonics are designed to keep the system’s currents and voltages as close to sinusoidal as possible, so they won’t add more distortion while they neutralize existing harmonics. That’s why a built-in low-distortion load is the correct choice—it directly reduces the amount of harmonic content the system has to deal with and avoids introducing new harmonics. The other options don’t address the waveform shape: isolation current doesn’t relate to harmonic correction, low resistance doesn’t ensure a clean waveform, and high THD would indicate more distortion, not correction.

Harmonics come from nonlinear loads that draw current with a waveform far from a pure sine. Devices that correct harmonics are designed to keep the system’s currents and voltages as close to sinusoidal as possible, so they won’t add more distortion while they neutralize existing harmonics. That’s why a built-in low-distortion load is the correct choice—it directly reduces the amount of harmonic content the system has to deal with and avoids introducing new harmonics. The other options don’t address the waveform shape: isolation current doesn’t relate to harmonic correction, low resistance doesn’t ensure a clean waveform, and high THD would indicate more distortion, not correction.