The answer is D. A universal motor uses brushes made out of carbon. The softness of the carbon allows easy direct radial contact with the communicator without any damage. It also allows easy reversal of rotor direction. A carbon brush has a flexible copper jumper lead attached.
Answer:
A community is usually a combination of territorially defined people, united by, for example, history, kinship, co-operation, common values and way of life. Usually, a community is made up of people living close together, but a community can also be a larger number of people who have something in common, such as nationality, ideology or interests.
In turn, political science studies the impact that politics as a decision-making system has on the life of communities. Thus, it studies how governments affect the lives of their citizens through their policies, and how citizens react to them.
Therefore, the community is ultimately the subject on which the activity of the political sciences falls, as they study their relationship with politics.
