Question
Download Solution PDFIn DC machines, the distance between two adjacent poles can be defined as:
Answer (Detailed Solution Below)
Detailed Solution
Download Solution PDFPole pitch:
- It is defined as the peripheral distance between centers of two adjacent poles in the DC machine.
- This distance is measured in terms of armature slots or armature conductors come between two adjacent pole centers.
- A pole pitch in the electrical machine is equal to 180° electrical.
- This is naturally equal to the total number of armature slots divided by the number of poles in the machine.
- ∴ Pole Pitch = (Number of armature slots) / (Number of poles)
Important Points
Front pitch: The distance between the last side of the first coil and the first side of the second coil is called the front pitch.
Back pitch: The distance between the two sides of a coil in the back of the armature is called back pitch.
Coil pitch: The distance measured in terms of armature slots or armature conductors between two sides of a coil.
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