Superposition Theorem Formula: The Superposition Theorem Formula also can be used to analyses ac circuits containing more than one source. The superposition theorem states that the response in any element in a circuit is the…
Node Voltage Method: The node voltage method can also be used with networks containing complex impedances and excited by sinusoidal voltage sources. In general, in an N node network, we can choose any node as…
Mesh Current Equation: We have earlier discussed meth analysis but have applied it only to resistive circuits. Some of the ac circuits presented in this chapter can also be solved by using Mesh Current Equation…
Reactive Power and The Power Triangle: We know that the average power dissipated is From the impedance triangle shown in Fig. 6.4 If we substitute Eqs (6.12) and (6.13) in Eq. (6.11), we get This…
Apparent Power and Power Factor: Apparent Power - The power factor is useful in determining useful power (true power) transferred to a load. The highest power factor is 1, which indicates that the current to…
Average Power Formula: To find the average value of any power function, we have to take a particular time interval from t1 to t2; by integrating the function from t1 to t2 and dividing the…
Instantaneous Power Formula: Instantaneous Power Formula - In a purely resistive circuit, all the energy delivered by the source is dissipated in the form of heat by the resistance. In a purely reactive (inductive or…
Parallel Circuits Definition: Parallel Circuits Definition - The complex number system simplifies the analysis of parallel ac circuits. In series circuits, the current is the same in all parts of the series circuit. In parallel…
Series Circuit: Series Circuit - The impedance diagram is a useful tool for analyzing series ac circuits. Basically we can divide the series circuits as RL, RC and RLC circuits. In the analysis of series…
Phasor Diagram Sine Wave: A phasor diagram can be used to represent a sine wave in terms of its magnitude and angular position. Examples of Phasor Diagram Sine Wave are shown in Fig. 5.5. In…
