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(b) A 480 V, 100 kW, 50 Hz, four-pole, Y-connected synchronous motor has a rated power factor of 0.85 leading. At full load, the efficiency is 91 percent. The armature resistance is 0.08 2, and the synchronous reactance is 1.0 N. Assume this machine is operating at full load. (i) Calculate the input power and output torque. (ii) Calculate the mechanical speed, Nm. (iii) Find the internal generated voltage, EA and the armature current, |IA|. (iv) Find the Converted power, Pconv- (v) Determine the mechanical, core and stray losses, Pmesh + Pcore + Pstray:

(b) A 480 V, 100 kW, 50 Hz, four-pole, Y-connected synchronous motor has a rated power factor of 0.85 leading. At full load, the efficiency is 91 percent. The armature resistance is 0.08 2, and the synchronous reactance is 1.0 N. Assume this machine is operating at full load. (i) Calculate the input power and output torque. (ii) Calculate the mechanical speed, Nm. (iii) Find the internal generated voltage, EA and the armature current, |IA|. (iv) Find the Converted power, Pconv- (v) Determine the mechanical, core and stray losses, Pmesh + Pcore + Pstray:

Introductory Circuit Analysis (13th Edition)
Introductory Circuit Analysis (13th Edition)
13th Edition
ISBN:9780133923605
Author:Robert L. Boylestad
Publisher:Robert L. Boylestad
Chapter1: Introduction
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Solutioni- Griven, 480V, 100KW, y pole, Y-Conneckd 8ynchronous motor. Power factor co8ø = 0.85 e thiciency n - 91% Ra = 0 68 2 Input power Pi =? output Powen Pi 100 kW =109-9kw 0.91 Input powen 109.9 kW And Dutput þowen outbut torque = 50 1204 and w = 2A Ns 60 A不X450 = 507 120X50 %3D - 1500YPM 2 tooX 10 = 636 94 Nm Output torque outbut torque = 6 36-94 Nm Ang i) Mechanical gpeed Nm = 1500 pm Ang
Transcribed Image Text:Solutioni- Griven, 480V, 100KW, y pole, Y-Conneckd 8ynchronous motor. Power factor co8ø = 0.85 e thiciency n - 91% Ra = 0 68 2 Input power Pi =? output Powen Pi 100 kW =109-9kw 0.91 Input powen 109.9 kW And Dutput þowen outbut torque = 50 1204 and w = 2A Ns 60 A不X450 = 507 120X50 %3D - 1500YPM 2 tooX 10 = 636 94 Nm Output torque outbut torque = 6 36-94 Nm Ang i) Mechanical gpeed Nm = 1500 pm Ang
(b) A 480 V, 100 kW, 50 Hz, four-pole, Y-connected synchronous motor has a rated power factor of 0.85 leading. At full load, the efficiency is 91 percent. The armature resistance is 0.08 N, and the synchronous reactance is 1.0 Q. Assume this machine is operating at full load. (i) Calculate the input power and output torque. (ii) Calculate the mechanical speed, Nm. (iii) Find the internal generated voltage, EA and the armature current, |IA|. (iv) Find the Converted power, Peonv- (v) Determine the mechanical, core and stray losses, Pmesh + Pcore + Pstray.
Transcribed Image Text:(b) A 480 V, 100 kW, 50 Hz, four-pole, Y-connected synchronous motor has a rated power factor of 0.85 leading. At full load, the efficiency is 91 percent. The armature resistance is 0.08 N, and the synchronous reactance is 1.0 Q. Assume this machine is operating at full load. (i) Calculate the input power and output torque. (ii) Calculate the mechanical speed, Nm. (iii) Find the internal generated voltage, EA and the armature current, |IA|. (iv) Find the Converted power, Peonv- (v) Determine the mechanical, core and stray losses, Pmesh + Pcore + Pstray.
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