The synchronous reactance per phase of the 460 V, 60 Hz, Y-connected 6-pole synchronous generator is 1.2 Ω. full load armature current 30 A (at 0.8 reverse power-coefficient). Rotary losses 1.5 kW and core losses 1.0 kW (60 Hz at full load). The armature resistance winding losses are neglected. Excitation current, generator no load terminal voltage is set to 480 V while operating. According to this: c. What is the efficiency of the generator when operating at rated current and a reverse power-coefficient of 0.8? D. How much shaft torque should be applied by the drive machine when the generator is running at full load? E. What happens to the induced torque?
The synchronous reactance per phase of the 460 V, 60 Hz, Y-connected 6-pole synchronous generator is 1.2 Ω. full load armature current 30 A (at 0.8 reverse power-coefficient). Rotary losses 1.5 kW and core losses 1.0 kW (60 Hz at full load). The armature resistance winding losses are neglected. Excitation current, generator no load terminal voltage is set to 480 V while operating. According to this: c. What is the efficiency of the generator when operating at rated current and a reverse power-coefficient of 0.8? D. How much shaft torque should be applied by the drive machine when the generator is running at full load? E. What happens to the induced torque?
Introductory Circuit Analysis (13th Edition)
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ISBN:9780133923605
Author:Robert L. Boylestad
Publisher:Robert L. Boylestad
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The synchronous reactance per phase of the 460 V, 60 Hz, Y-connected 6-pole synchronous generator is 1.2 Ω. full load armature current 30 A (at 0.8 reverse power-coefficient). Rotary losses 1.5 kW and core losses 1.0 kW (60 Hz at full load). The armature resistance winding losses are neglected. Excitation current, generator no load terminal voltage is set to 480 V while operating. According to this:
c. What is the efficiency of the generator when operating at rated current and a reverse power-coefficient of 0.8?
D. How much shaft torque should be applied by the drive machine when the generator is running at full load?
E. What happens to the induced torque?
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