Within a three-phase power distribution system, at transformer substations, which increased risk results when impedance differences exist?

💡 Explanation

Unbalanced impedance causes unequal current flow, stressing phases and producing circulating current, because the **impedance mismatch** dictates current distribution in parallel transformer windings. Therefore windings overheat rather than maintain thermal equilibrium across all phases because balanced impedance would minimize circulating currents.

• Which control system response occurs when a robotic weld seam tracker's sensor fails to capture the weld joint?
• Which risk increases when protective relays in a three-phase power distribution system fail to operate during a fault?
• Which risk increases when fuel injector nozzle orifice erodes in diesel engine?
• Which issue arises in reinforced concrete columns when using excessive rebar density?
• Which outcome occurs when the torsional damper fails on high-performance engine crankshafts?
• Which positional error increases when the joint angles deviate from optimal values in trajectory generation for collaborative robots?