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Fundamental Principles of electrical engineering

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Unit 1 of principles of electrical engineering
Cameron Massara
Mapa Mental por Cameron Massara, actualizado hace más de 1 año
Cameron Massara
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Fundamental Principles of electrical engineering
  1. Ohms law, power and energy
    1. Ohms law: The current flowing into a circuit is directly proportional to the voltage as long as the temperature remains constant
      1. Formula is V=IR
      2. Power: The rate at which energy is used in a circuit over a period of time (A generator is a producer of power)
        1. Formula is P=IV
        2. Energy: The capacity for doing work
          1. Formula is W=PT
            1. Motors convert electrical energy into kinetic energy
          2. Kirchoffs current and voltage laws
            1. The current law states that at any junction the total current going into it must equal the current leaving
              1. In simple : I1+ I2 = I3
              2. The voltage law states that in any closed loop in a network, the algebraic sum of the voltage drops taken around the loop is equal to the resultant EMF acting in that loop.
                1. In simple EMF=V1+V2+V3
              3. Maximum power transfer theorem
                1. This states that when a resistance of a load is equal to the internal resistance of the supply the power transfer from the supply to the load is at its maximum
                  1. In simple terms: When R=r the power transferred from the source to the load is at its maximum

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