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1. The OC curve of a d.c. shunt generator for a speed of 1000 r.p.m. is given by the following table. Field current: 2.0 3.0 4.0 5.0 6.0 7.0 E.M.F. volts: 102 150 188 215 232 245 The shunt has a resistance of 37 2. Find the speed at which excitation may be expected to build up. The aramture resistance of 0.04 02. Neglecting the effects of brush drop and armature reaction, estimate the p.d. when the speed is 1000 r.p.m. and the armature delivers a current of 100 A. (725 r.p.m.; 231 V)

1. The OC curve of a d.c. shunt generator for a speed of 1000 r.p.m. is given by the following table. Field current: 2.0 3.0 4.0 5.0 6.0 7.0 E.M.F. volts: 102 150 188 215 232 245 The shunt has a resistance of 37 2. Find the speed at which excitation may be expected to build up. The aramture resistance of 0.04 02. Neglecting the effects of brush drop and armature reaction, estimate the p.d. when the speed is 1000 r.p.m. and the armature delivers a current of 100 A. (725 r.p.m.; 231 V)

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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The OC curve of a d.c. shunt generator for a speed of 1000 r.p.m. is given by the following table. Field current: 2.0 3.0 4.0 5.0 6.0 7.0 E.M.F. volts: 102 150 188 215 232 245 The shunt has a resistance of 37 2. Find the speed at which excitation may be expected to build up. The aramture resistance of 0.04 2. Neglecting the effects of brush drop and armature reaction, estimate the p.d. when the speed is 1000 r.p.m. and the armature delivers a current of 100 A. (725 r.p.m.; 231 V)
Transcribed Image Text:The OC curve of a d.c. shunt generator for a speed of 1000 r.p.m. is given by the following table. Field current: 2.0 3.0 4.0 5.0 6.0 7.0 E.M.F. volts: 102 150 188 215 232 245 The shunt has a resistance of 37 2. Find the speed at which excitation may be expected to build up. The aramture resistance of 0.04 2. Neglecting the effects of brush drop and armature reaction, estimate the p.d. when the speed is 1000 r.p.m. and the armature delivers a current of 100 A. (725 r.p.m.; 231 V)
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