Question
Download Solution PDFIn a three-phase alternator, there are three windings placed ______ degrees apart.
Answer (Detailed Solution Below)
Detailed Solution
Download Solution PDF- In a three-phase alternator, there are three windings placed 120° apart from each other.
- A three-phase balanced winding in the stator of the alternator is shown in the schematic diagram given below.
- In a three-phase balanced winding, the number of turns in three windings are equal, with the angle between the adjacent phases, say R & Y is 120° (electrical).
- The same angle of 120° (electrical) is also between the phases Y & B.
- A three-phase balanced voltage, with the phase sequence as R-Y-B, is applied to the above winding.
- In a balanced voltage, the magnitude of the voltage in each phase, assumed to be in star, in this case, is equal with the phase angle of the voltage between the adjacent phases, say R & Y, being 120°.
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