Red Seal Electrician Practice
DC circuitsQuestion 758 of 1506

What does it mean that a delta network and a Y network are equivalent?

  1. They behave the same when measured from the three terminals
  2. They have the same resistor values
  3. They draw no current from any source at all
  4. They have the same number of wires and the same value for each resistor
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Correct answer: They behave the same when measured from the three terminals

Equivalent networks cannot be told apart electrically from the outside terminals.

Source: Lessons in Electric Circuits I: DC (Kuphaldt), 10.13: Δ-Y and Y-Δ Conversions

Practice dc circuits

Questions last reviewed: 18 October 2026