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REE Electrical Power Systems and Machines Review

Super Tutor TeamUpdated April 26, 20266 min read

REE Electrical Power Systems and Machines Review

REE Day 3 covers Power Systems + Machines analysis.

What PRC asks

Topic blockApprox. items
Circuit analysis (DC + AC)12
Three-phase circuits10
Power generation systems10
Power transmission lines12
Power distribution systems10
Symmetrical components + fault analysis10
Power system stability6
Synchronous machine analysis10
Induction machine analysis10
DC machine analysis6
Power factor correction4

Circuit analysis

  • Network theorems (Thevenin, Norton, superposition)
  • Mesh + nodal analysis
  • AC circuits: phasor analysis, power
  • Resonance: series + parallel

Three-phase circuits

  • Y + Δ connections
  • Balanced + unbalanced systems
  • Power calculation
  • Per-unit analysis

Power generation

  • Conventional plants (steam, gas, hydro)
  • Renewable (solar, wind)
  • Combined cycle
  • Capacity factor + load factor

Power transmission

  • Transmission line parameters (R, L, C)
  • Short, medium, long line models
  • Voltage regulation + efficiency
  • Reactive power compensation
  • Surge impedance loading

Power distribution

  • Distribution voltage levels
  • Radial vs loop distribution
  • Distribution transformer applications
  • Service entrance design

Symmetrical components + fault analysis

  • Sequence impedances
  • Symmetrical fault: 3-phase short circuit
  • Unsymmetrical faults: SLG, LL, LLG
  • Fault current calculation

Power system stability

  • Steady-state stability
  • Transient stability
  • Equal area criterion

Machine analysis

  • Synchronous: armature reaction, voltage regulation, power-angle characteristics
  • Induction: equivalent circuit, performance, speed control
  • DC: armature reaction, commutation, characteristics

Power factor correction

  • PF improvement methods
  • Capacitor sizing
  • Synchronous condenser

A 6-week drilling plan

WeekFocusVolume target
1Circuit analysis + 3-phase80 problems
2Power generation + transmission80 problems
3Distribution + fault analysis80 problems
4Synchronous + induction machines80 problems
5DC machines + PF correction + stability60 problems
6Mock + remediation1 mock + 60 problems

Realistic scores

Diagnostic baselineRealistic test-day score
50%70%
60%78%
70%84%

Where Super Tutor fits

Super Tutor's REE track covers Power Systems.

What to read next

The REE 2026 pillar guide covers the full review.

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