give two reasons why mica is used as insulation between the segments of the communitator?
https://en.wikipedia.org/wiki/Mica
Can be split thin
good insulating dielectric
Mica is used as insulation between the segments of the commutator for the following two reasons:
1. Electrical Insulation: Mica has excellent electrical insulating properties. It is a non-conductor of electricity and can endure high voltage without breaking down. This property makes it highly suitable for separating the conducting segments of the commutator, which are subjected to high electrical currents. By preventing electrical contact between the segments, mica helps ensure that the current flows in the desired path and prevents short circuits.
2. Thermal Insulation: Mica has good thermal insulating properties as well. It is able to resist and dissipate heat effectively. In the commutator, the segments may generate significant heat due to the flow of electric current. By placing mica insulation between the segments, the heat is effectively isolated, preventing any unwanted thermal effects. This is important for maintaining the stability and performance of the commutator, as excessive heat can lead to component failure or damage.
To determine why mica is used as insulation between the segments of the commutator, you may refer to various reliable sources such as engineering textbooks, scientific articles, or industry standards. These resources will provide in-depth information on the electrical and thermal properties of mica and how they make it suitable for insulation in the commutator.