AC Circuit Phase Sequence

Phase sequence is the order in which the generated voltages in the phase winding of an alternator reach or  attain  their peak or maximum values. It is represented by the letters a, b, and c or the numbers 1, 2, 3 or by using double letter as ab, bc  and ca or  an, bn  and...

Balanced Three phase AC circuit Delta connected

A balanced three phase AC circuit systems is energized by three equal alternating emf's of the same frequency but 120 degree apart. The phase impedance are equal. Also the currents are equal and 120 degree apart. Three AC emf's differing in time phase by 120 degree DELTA (MESH) CONNECTED SYSTEM This...

Parallel RC circuit formula and phasor diagram

RC circuit in parallel formula and diagram Currents in IR and IC are 90 degree out of phase and cannot be added directly. The total current or resultant will depend upon the resistance and R and the reactance ( AC reactance) of AC Parallel RC circuit Phasor diagram : As the reactance...

Parallel RL circuits formula and Phasor diagram explanation

Parallel  RL circuit formula and diagram The current through L will lag  IR  by 90 degrees . The resultant negative phase angle  depends upon the relative values of R and XL. for R, E and R in phase . For  XL , E and IL in quadratic lagging current. As  the...

Series RLC circuit formula explanation

Series RLC circuit diagram and formula Resistance ,inductance capacitance in series    In RLC series circuit , the series current is common for Resistance, Capacitance and inductance . VR will be in phase width I. Whereas the voltage of Vc and VL will be 180 degree...

The formula for Series RC circuit with Phasor Diagram

Series RC circuit formula explanation  R- the resistance -opposition to current flow (ohms)Ω C- capacitance-opposition to any change in voltage ,farad(f)  VR=IR- voltage drop of the resistor Vc= q/c=∫idt/c- voltage drop in the capacitor           ...

Polyphase system: How Three phase sytem works?

Three Phase system    A three phase circuit is energized by three alternating emf's of the same frequency and differing in time phase by 120 .The emfs are generated in three sets of armature coils in an ac generator. These three sets are 120 degree apart on the generator armature....