What is the formula for the pole pitch in the universal commutator motor?
(a) pole pitch = 3.14 * diameter * 2 * no. of poles
(b) pole pitch = 3.14 / diameter * 2 * no. of poles
(c) pole pitch = 3.14 * diameter / 2 * no. of poles
(d) pole pitch = 3.14 * diameter * 2 / no. of poles
The question was asked by my school teacher while I was bunking the class.
This question is from Design of Small Universal Commutator Motors topic in chapter Design of Small Electrical Machines, Starters and Field Regulators of Design of Electrical Machines