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REE · Subject 4 of 6

Electrical Circuits (DC and AC)

DC network analysis, AC phasors and impedance, power, resonance, and three-phase circuits.

  1. 1Study each lesson3 lessons, each with its own quiz
  2. 2Section practice test3 sets over the whole subject
  3. 3Prove it on the mockTimed, scored like the real exam

What this subject covers

  • DC circuits: Ohm and Kirchhoff laws, series-parallel
  • Network theorems (Thevenin, Norton, superposition)
  • AC fundamentals: phasors, impedance, and reactance
  • AC power, power factor, and resonance
  • Three-phase circuits

Study lessons

  1. 1

    DC Circuits and Network Theorems

    Master Ohm's law, KVL and KCL, series-parallel reduction, and the Thevenin, Norton, superposition, and maximum-power-transfer theorems tested throughout the REE's Electrical Engineering Professional Subjects group.

    15 min
  2. 2

    AC Circuits and Power

    Master RMS values, phasors, impedance and reactance, the AC power triangle and power factor, series resonance, and the three-phase wye/delta relations tested on the REE.

    15 min
  3. 3

    Three-Phase Circuits

    Master the wye and delta line-to-phase relationships, three-phase real, reactive, and apparent power, balanced-load current computation, the two-wattmeter method, phase sequence, and delta-wye impedance conversion tested on the REE.

    15 min

Section practice test

3 test sets covering the whole Electrical Circuits (DC and AC) section, 90 original questions with explanations. After you finish the lessons above, prove it here. Randomized every run.

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