Physics · Electrical Machines
Which statements about voltage drop in an alternator are correct? I. The voltage drop due to armature resistance (IaRa) is in phase with the armature current (Ia). II. At unity power factor, the voltage drop IaRa directly subtracts arithmetically from the generated EMF magnitude to find terminal voltage approximate relation. III. For a leading power factor load, IaRa contributes to an increase in terminal voltage (V). IV. Armature resistance has no effect on voltage regulation.
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 1Statements I and IV only are correct.
- 2Statements II and III only are correct.
- 3Statements I and II only are correct.✓
- 4Statements III and IV only are correct.
Correct answer
Statements I and II only are correct.
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