In a three-phase power system, what is the phase difference between the phases?

Practice Questions

Q1
In a three-phase power system, what is the phase difference between the phases?
  1. 0 degrees
  2. 90 degrees
  3. 120 degrees
  4. 180 degrees

Questions & Step-by-Step Solutions

In a three-phase power system, what is the phase difference between the phases?
  • Step 1: Understand that a three-phase power system has three separate electrical currents or voltages.
  • Step 2: Know that these three phases are usually labeled as Phase A, Phase B, and Phase C.
  • Step 3: In a balanced three-phase system, the phases are evenly spaced apart.
  • Step 4: The total circle of 360 degrees is divided by 3 phases.
  • Step 5: Calculate the phase difference by dividing 360 degrees by 3, which equals 120 degrees.
  • Step 6: Conclude that the phase difference between each of the three phases is 120 degrees.
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