Question

A $10-\mathrm{hp}, 230-\mathrm{V}, 60-\mathrm{Hz}$, three-phase, Y-connected synchronous motor delivers full load at a power factor of 0.8 leading. The synchronous reactance is $6 \Omega$, the rotational loss is 230 W , and the field loss is 50 W . Find a. The armature current. b. The motor efficiency. c. The power angle. Neglect the stator winding resistance.

Name: Problem 46, Chapter 15: Principles and Applications of Electrical Engineering
Uploaded: 2024-07-16T14:24:01-08:00
Duration: 2 min 45 s
Channel: Narayan Hari
Description: A 10-hp, 230-V, 60-Hz, three-phase, Y-connected synchronous motor delivers full load at a power factor of 0.8 leading. The synchronous reactance is 6 Ω, the rotational loss is 230 W , and the field loss is 50 W . Find a. The armature current. b. The motor efficiency. c. The power angle. Neglect the stator winding resistance.

   A $10-\mathrm{hp}, 230-\mathrm{V}, 60-\mathrm{Hz}$, three-phase, Y-connected synchronous motor delivers full load at a power factor of 0.8 leading. The synchronous reactance is $6 \Omega$, the rotational loss is 230 W , and the field loss is 50 W . Find
a. The armature current.
b. The motor efficiency.
c. The power angle.

Neglect the stator winding resistance.

Principles and Applications of Electrical Engineering

Giorgio Rizzoni,… 7th Edition

Chapter 15, Problem 46

Thanks for your feedback!

A $10-\mathrm{hp}, 230-\mathrm{V}, 60-\mathrm{Hz}$, three-phase, Y-connected synchronous motor delivers full load at a power factor of 0.8 leading. The synchronous reactance is $6 \Omega$, the rotational loss is 230 W , and the field loss is 50 W . Find a. The armature current. b. The motor efficiency. c. The power angle. Neglect the stator winding resistance.