Red Seal Electrician Practice
Power factor and three-phaseQuestion 1219 of 1506

What gain does a long transmission line get from synchronous condensers along its length?

  1. Better power factor, so more real power fits the line
  2. Lower line resistance, so that smaller conductors can be used on it
  3. Rising frequency along the line, so less voltage is needed
  4. Direct current flow in the line, so there is lower loss
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Correct answer: Better power factor, so more real power fits the line

Absorbing reactive power improves the power factor, so more real power fits in a fixed-size line.

Source: Lessons in Electric Circuits II: AC (Kuphaldt), 13.3: Synchronous Condenser

Practice power factor and three-phase

Questions last reviewed: 18 October 2026