Theory & DesignPregunta 88 de 110
A three-phase panel has phase loads of A = 40 A, B = 30 A, C = 20 A. What is the ideal balanced current per phase?
a.40 A
b.20 A
c.25 A
d.30 A
Explicación
Total = 40 + 30 + 20 = 90 A; balanced across three phases = 90 / 3 = 30 A per phase.
Practica las 110 preguntas gratis — sin registro.
Preguntas relacionadas de este tema
- An 80-kW load at 0.80 power factor is to be corrected to 0.95. How many kVAR of capacitance are required (tan 36.87 = 0.75, tan 18.19 = 0.329)?
- In a three-phase, four-wire wye system serving nonlinear loads, which harmonic order adds arithmetically in the neutral?
- On a feeder with significant harmonic (nonlinear) load, the neutral conductor is treated as:
- A single-line (one-line) diagram represents an electrical system by:
- A transformer steps 480 V down to 120 V. What is its turns (voltage) ratio?
- A transformer has a 4:1 turns ratio and a 10-A primary current. What is the secondary current (ideal)?
Última revisión: · proceso editorial
Equipo Editorial de PrepPass · Verificado con Master Electrician Licensing Exam (NEC-based) · Cómo revisamos