What Is Phase Angle In Electrical Engineering
Quantitatively the impedance of a two terminal circuit element is the ratio of the complex representation of the sinusoidal voltage between its terminals to the complex representation of the current flowing through it.
What is phase angle in electrical engineering. Because the motor is an inductive load there is a phase shift between the motor voltage and current. The phase angle can be recognized as the angle between the resistive current and the total current on the current phasor diagram in figure 7 48 the value of i c 3 amperes and ir 4 amperes. In this video i will explain how to add two sinusoids with different amplitudes and how t. In electrical engineering electrical impedance is the measure of the opposition that a circuit presents to a current when a voltage is applied.
The phase angle is calculated using equation 7 41. Summary of complex numbers. Phase angle when use in electrical engineering terms usually refers to the time difference between the voltage waveform and the resulting current waveform caused by the impedance of the load that the voltage is applied to. Please note that the 2 converts the maximum amplitude into an effective or rms value with the phase angle given in radians ω.
Electrical engineering has a reputation for being mysterious. Although single phase electricity is used to supply common domestic and office electrical appliances three phase alternating current a c systems are almost universally used to distribute electrical power and to supply electricity directly to higher power equipment. Impedance is measured in ohms in its complex form or it can be indicated as ohms value and impedance phase angle.