Confirmed Errata – Study Guide for PE Power - Study For Fe

Confirmed Errata – Study Guide for PE Power

Corrections in Problems section:

Problem 2.4 g) Option B = $93.60

Problem 4.5 l) Option A = -6808 VAR

Problem 8.1 e) Option A = 382 feet

Problem 8.7 s) Option D = 0.029

Problem 8.7 t) Option D = 64.2 Ohm

Problem 9.3 e) Option D = 6000 A

Corrections in Solutions section:

Problem 2.4 g) Peak consumption = 50% , Mid-peak consumption = 20%

Problem 4.5 k) θ = -71⁰

Problem 4.5 l) θ = -71⁰ sinθ = -0.945 Reactive Power Q = -6808 VAR

Problem 8.1 d) Z_eff = 1.2 × 0.75 + 0.063 × sin(41.40°)

Problem 8.1 e) Therefore, total circuit length shall be less than 2 x 191 ft = 382 ft to maintain voltage drop under 3%.

Problem 8.1 f) Z_eff = 0.10 × 0.75 + 0.054 × sin (41.40°)

Problem 8.5 h) Options B and D are both correct because given scenario represents a Single Line-Ground and Double Line-Line faults.

Problem 8.7 s) 𝛾 = √ (8.53 × 10 ⁻⁴ ) = 0.029

Problem 8.7 t) Zc = 64.2 Ohm