Lesson Archives
Power in Three-Phase Circuits, Power in Star Connection, Delta Connection, Solved Examples, Power in Unbalanced Loads, Measurement of Power in three Phase Circuits, Three-Wattmeter Method: This is the simplest and straightforward method, Two-Wattmeter Method: This can be used for any balanced or unbalanced load, star- or delta-connected. One-Wattmeter Method: This can be used only for […] Three-Phase System, Balanced Three-phase voltages, Y-connected source, Δ-connected source, star and delta sources and loads, Phase Voltage, Line Voltage, Phase current, Line current. Line to neutral voltage and phase to phase voltage, balanced wye load, balanced delta load, balanced wye-wye three-phase system, balanced wye-delta connection, balanced delta-wye connection, balanced delta-delta connection, Power in Three-Phase System, […] Applications of Three Phase Alternating Currents, Three-Phase System, Balanced Three-phase voltages, Y-connected source, Δ-connected source, star and delta sources and loads, Phase Voltage, Line Voltage, Phase current, Line current. Line to neutral voltage and phase to phase voltage, balanced wye load, balanced delta load, balanced wye-wye three-phase system, balanced wye-delta connection, solved examples Solved Examples: AC analysis of RL Circuits, Inductive reactance (XL), Impedance (Z), Current (I), the Voltage drop across the resistor (ER), and inductor (EL), The angle theta (θ) and power factor (PF) for the circuit. True power (W), reactive power (VARs), apparent power (VA). Thevenin’s theorem, Norton’s theorem, Nodal and Mesh Analysis, and Superposition theorem […] Resonance in Series RLC AC Circuits, Impedance at resonance, Quality Factor (Q), The “sharpness” of the resonance in a resonant circuit is measured quantitatively by the quality factor Q. The quality factor relates the maximum or peak energy stored to the energy dissipated in the circuit per cycle of oscillation. Tunned Circuits. Bandwidth and half […] Series RLC Circuit, Voltage equation, Current equation, Phasor diagram, Parallel RLC impedance, Power in Parallel RLC circuit, Power factor in Parallel RLC circuit. Variation of magnitude and phase of current with frequency solved examples Parallel RLC circuits, Parallel RL circuits, Parallel RC circuits. Calculating the Power Factor and Power Series RLC Circuit, Voltage equation, Current equation, Phasor diagram, RLC impedance, Power in RLC circuit, Power factor in RLC circuit. Variation of magnitude and phase of current with frequency solved examples series RLC circuits, RL circuits, RC circuits. Calculating the Power Factor and Power Solved Examples: Express the sinusoidal time function by phasor representation, Calculate the average voltage, R.M.S. Voltage and the peak voltage of the supply, Converting Polar Form into Rectangular Form, Rectangular Form into Polar Form, Multiplying in Polar Form, Division in Polar Form, Phasor diagram showing the phase relationship between the current and voltage. Calculating the […] The RMS voltage/current, AC Response for a Pure Resistive Circuit, Phasor representation, current and voltage are in phase for a resistor, Generalised Equation for Power in an AC Circuit, Power in pure resistive circuit, AC Response for a Pure Inductive Circuit, inductor voltage leads the current by 90o, Thus an ideal inductor offers no resistance […] Advantages AC over DC, Disadvantages of AC w.r.t DC, Alternating Currents, Rotating Phasor, Review of Complex Numbers, Euler’s Formula Exponential Form, Rectangular form, Phasor Representation, Phasor Operations, Average and RMS, Form factor, Peak Factor, Crest factor, Problems and Solutions on, Average and RMS.