1. The no-load voltage of a 50 kW, 220 Volts, shunt generator in the CIT Lab is 232 volts and rated load voltage is 220 volts. The armature resistance including brushes is 0.026 ohm and the resistance of the shunt field resistance is 52 ohms. What is the induced electromagnetic force at rated load? 2. The field current of a 180 kW, 250 volts DC shunt generator is 6 A when running full load at rated terminal voltage. If the combined armature and brush resistance is 0.02 ohm, solve for the electrical efficiency of the generator.
1. The no-load voltage of a 50 kW, 220 Volts, shunt generator in the CIT Lab is 232 volts and rated load voltage is 220 volts. The armature resistance including brushes is 0.026 ohm and the resistance of the shunt field resistance is 52 ohms. What is the induced electromagnetic force at rated load? 2. The field current of a 180 kW, 250 volts DC shunt generator is 6 A when running full load at rated terminal voltage. If the combined armature and brush resistance is 0.02 ohm, solve for the electrical efficiency of the generator.
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Author:Robert L. Boylestad
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Transcribed Image Text:1. The no-load voltage of a 50 kW, 220 Volts, shunt generator in the CIT Lab is 232 volts and rated load voltage is 220 volts. The
armature resistance including brushes is 0.026 ohm and the resistance of the shunt field resistance is 52 ohms. What is the
induced electromagnetic force at rated load?
2. The field current of a 180 kW, 250 volts DC shunt generator is 6 A when running full load at rated terminal voltage. If the
combined armature and brush resistance is 0.02 ohm, solve for the electrical efficiency of the generator.
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