PE Electrical study guide
PE Electrical · Work through your exam, one topic at a time.
The PE Electrical and Computer: Power credential is a professional engineering license for engineers who design, analyze, and maintain electric power systems - generation, transmission, distribution, and industrial or commercial power utilization. It is administered by NCEES and is one of three disciplines offered within the PE Electrical and Computer exam, alongside Computer Engineering and Electronics, Controls, and Communications. The PE Electrical study guide has 5 sections and about 1,516 words.
01General Power Engineering Fundamentals
General power engineering questions test whether you can move fluidly between real, reactive, and apparent power and apply the practical rules that govern equipment sizing. Know the power triangle (P, Q, S), the difference between kW, kVAR, and kVA, and that only real power does work while reactive power establishes magnetic fields.
312 words, about 2 min02Circuit Analysis
Circuit analysis questions reward a systematic approach: identify the unknown, then choose node-voltage, mesh-current, superposition, or Thevenin/Norton as appropriate. For sinusoidal steady state, convert sources to phasors, work in impedance (Z R = R, Z L = jωL, Z C = 1/(jωC)), and remember the result is RMS only if the source was RMS.
320 words, about 2 min03Rotating Machines and Electromagnetic Devices
Expect questions on synchronous machines, induction motors, DC machines, and transformers. For induction motors, synchronous speed is n s = 120f/p and slip is s = (n s − n r)/n s; rotor frequency is sf.
286 words, about 1 min04Transmission and Distribution
Transmission questions center on modeling lines and reasoning about voltage. Short lines (under about 80 km) use series impedance only; medium lines add shunt capacitance (nominal π or T); long lines require hyperbolic ABCD parameters.
298 words, about 1 min05Power System Analysis and Design
This domain ties the rest together: per-unit, load flow, faults, stability, and protection. Choose base values and convert with Z base = kV²/MVA, remembering that per-unit impedance changes when the base changes.
300 words, about 2 min