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5. A 3 phase Y connected 6 pole alternator is rated at 10 kVA 220 V at 60 Hz. Synchronous reactance X-3 Q. The no load line to neutral terminal voltage at 1000 rev/min follows the magnetization curve shown below. Determine (a) the rated speed in rev/min, (b) the field current required for full load operation at 0.8 power factor lagging. E (V) 11 38 70 102 131 156 178 193 206 215 221 224 If (A) 0 0.2 0.4 0.6 0.8 1.0 1.2 1.4 1.6 1.8 2.0 2.2 Answer: n=1200 rev/min, I=1.0 A

5. A 3 phase Y connected 6 pole alternator is rated at 10 kVA 220 V at 60 Hz. Synchronous reactance X-3 Q. The no load line to neutral terminal voltage at 1000 rev/min follows the magnetization curve shown below. Determine (a) the rated speed in rev/min, (b) the field current required for full load operation at 0.8 power factor lagging. E (V) 11 38 70 102 131 156 178 193 206 215 221 224 If (A) 0 0.2 0.4 0.6 0.8 1.0 1.2 1.4 1.6 1.8 2.0 2.2 Answer: n=1200 rev/min, I=1.0 A

Introductory Circuit Analysis (13th Edition)
Introductory Circuit Analysis (13th Edition)
13th Edition
ISBN:9780133923605
Author:Robert L. Boylestad
Publisher:Robert L. Boylestad
Chapter1: Introduction
Section: Chapter Questions
Problem 1P: Visit your local library (at school or home) and describe the extent to which it provides literature...
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5. A 3 phase Y connected 6 pole alternator is rated at 10 kVA 220 V at 60 Hz. Synchronous reactance X-3 Q. The no load line to neutral terminal voltage at 1000 rev/min follows the magnetization curve shown below. Determine (a) the rated speed in rev/min, (b) the field current required for full load operation at 0.8 power factor lagging. E (V) 11 38 70 102 131 156 178 193 206 215 221 224 If (A) 0 0.2 0.4 0.6 0.8 1.0 1.2 1.4 1.6 1.8 2.0 2.2 Answer: n=1200 rev/min, I=1.0 A
Transcribed Image Text:5. A 3 phase Y connected 6 pole alternator is rated at 10 kVA 220 V at 60 Hz. Synchronous reactance X-3 Q. The no load line to neutral terminal voltage at 1000 rev/min follows the magnetization curve shown below. Determine (a) the rated speed in rev/min, (b) the field current required for full load operation at 0.8 power factor lagging. E (V) 11 38 70 102 131 156 178 193 206 215 221 224 If (A) 0 0.2 0.4 0.6 0.8 1.0 1.2 1.4 1.6 1.8 2.0 2.2 Answer: n=1200 rev/min, I=1.0 A
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