In alternators, a pole - pitch is always ______ electrical degrees regardless of the number of poles on the machine.

Concept:

Pitch Factor or Coil Span Factor in Alternator:

• Coil span or coil pitch is defined as the distance between the two sides of a coil.
• Pole pitch is defined as the angular distance between the central line of one pole to the central line of the next pole.
• A pole pitch is always 180° electrical regardless of the number of poles on the machine.
• When a coil is having a span of 180° electrical, it is called a full-pitch coil.
• When the coil is having a span of less than 180° electrical, it is known as a short-pitch coil or fractional-pitch coil.