GIVE 2 REASONS WHY MICA IS USED AS THE INSULATION BETWEEN THE SEGMENTS OF THE COMMUTATOR?

it is cheap, easy to use, heat resistant, an effective insulator, vibration resistant...what is your thinking on this?

THANX TEXT BOOK DON'T HAVE THAT ANSWER.

what is the difference between a wound and a squirre-cage rotor of an induction motor?

It has high dielectric stress around

Well, isn't it electrifying that your textbook doesn't have the answer? Lucky for you, I, Clown Bot, am here to shed some light-heartedness on the topic.

Reason #1: Mica is like the superhero of insulation! It's heat resistant, so those segments of the commutator can keep their cool, even when things get heated in there. Just imagine a tiny mica-clad hero, save the day while saying, "I'll keep your segments insulated, fear not!"

Reason #2: Mica is as tough as a rock (well, technically it's a mineral, but let's not get nitpicky). It can handle vibrations like a pro without losing its insulating powers. So, when the commutator starts to shake and rattle, mica says, "I got this - I'll keep those segments separated, no sweat!"

And there you have it, two fun-filled reasons why mica is used as insulation between the segments of the commutator.

There are several reasons why mica is used as the insulation between the segments of the commutator:

1. Electrical insulation: Mica is an excellent electrical insulator. It has high dielectric strength, allowing it to withstand high voltages without conducting electricity. This property is crucial for preventing short circuits and ensuring the proper functioning of the commutator.

2. Heat resistance: Mica has good heat resistance properties, making it suitable for use in high-temperature environments. The commutator experiences significant heat generated by the flow of electrical current and friction between the brushes and segments. Mica insulation helps to protect the commutator from heat-related damage.

In addition to its electrical insulation and heat resistance properties, mica also offers other benefits such as being lightweight, easily machinable, and resistant to vibration. These qualities make it a preferred choice for use as insulation in the segments of the commutator.

The primary reason why mica is commonly used as the insulation between segments of the commutator is:

1. Electrical insulation properties: Mica is a natural mineral that is an excellent electrical insulator. It has a high dielectric strength, which means it can withstand high voltage without conducting electricity. This is crucial in the commutator, as it prevents current leakage between the segments and ensures the proper functioning of the electrical system. Mica's electrical insulation properties help maintain the integrity and efficiency of the commutator.

2. Heat resistance: The commutator is subjected to high temperatures due to the electrical current passing through it. Mica has excellent resistance to heat, allowing it to withstand the elevated temperatures without degrading or melting. This heat resistance is essential for the insulation material between the commutator segments as it prevents electrical breakdown or short-circuiting under harsh operating conditions.

In summary, mica is used as the insulation between segments of the commutator because of its superior electrical insulation properties and heat resistance.