Physics · Electrical Machines
What is the primary purpose of obtaining the Zero Power Factor Characteristic (ZPFC) curve of an alternator?
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 1To verify the thermal stability of the alternator when it is loaded purely by active resistance
- 2To plot the terminal voltage per phase against the field current at a constant rated armature current and zero lagging power factor✓
- 3To determine the synchronous speed and pole pitch configurations
- 4To find the internal short-circuit ratio and winding mechanical losses
Correct answer
To plot the terminal voltage per phase against the field current at a constant rated armature current and zero lagging power factor
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