For the circuit shown, Z, = 50 + j30 SN. What component is needed to form impedance ZpFg in parallel with Z, such that the load achieves unity power factor? 5520° V ( ZL ZPFC f = 110 Hz
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- Let a 100V sinusoidal source be connected to a series combination of a 3 resistor, an 8 inductor, and a 4 capacitor. (a) Draw the circuit diagram. (b) Compute the series impedance. (C) Determine the current I delivered by the source. Is the current lagging or leading the source voltage? What is the power factor of this circuit?The output voltage waveform of a four quadrant chopper is shown in figure. In the waveform, Vdc is input voltage, D is duty cycle ratio and T is cycle time. DT T. The RMS value of ripple component in output voltage is (A) Vác 2V VD-D (В) V(2D-1) (C) de de (D) V de VD- D? ydlši vl pir:10 Expert Q&A + 1. For the circuit in Figure: a. Determine I, VR, and Ve in phasor form. b. Calculate the total power factor, and indicate whether it is leading or lagging. c. Calculate the average power delivered to the circuit. d. Draw the impedance diagram. e. Find the voltages VR and Vcusing the voltage divider rule and compare them with the results of part(a) above. + Uc - + Ug - 30 2 L = 0.2 H L =0.2 H C = 4 µF e = V2(20) sin(377t + 40°) Expert Answer Home Search More II
- For the circuit shown, Z = 21 – j45 N. What component is needed to form impedance ZPFC in parallel with ZL such that the load achieves unity power factor? 1520° V ZPFC W-175 rad/sQ2. A series of motor (Load 1) and lighting (load 2) are connected to an AC source as shown in Figure Q2. The AC source, Vs, supplies 415220° V with frequency 50 Hz. Based on this information: 5Ω 100mH : 15 2 Load 1 Load 2 i) Calculate the total load impedance. Vs ii) Calculate the current, I. Figure Q2. Write the waveform expressions in frequency domain for Vs and I. Draw a phasor diagram consists of Vs and / and state the relationship between Vs and I. (ii) (iv) Determine the power factor and calculate the real power, reactive power and apparent power. Establish the power triangle for the load.For the system in the figure: Find the total average power, total reactive power, total apparent power, and total power factor. Find the current Is (in phasor form). If the loads can be modeled as a resistance in series with a reactive element (capacitor or inductor), find the impedance of each load. Confirm the result of part B using the input voltage and the result of part C. ..
- Q2. A series of motor (Load 1) and lighting (load 2) are connected to an AC source as shown in Figure Q2. The AC source, Vs, supplies 415420° V with frequency 50 Hz. Based on this information: 50 100 mH 150 Load 1 Load 2 i) Calculate the total load impedance Vs ii) Calculate the current, I. Figure Q2. (iii) Write the waveform expressions in frequency domain for Vs and I. Draw a phasor diagram consists of Vs and I and state the relationship between Vs and I. (iv) Determine the power factor and calculate the real power, reactive power and apparent power. Establish the power triangle for the load.A single phase AC chopper supplies a pure inductive load of 0.02H from 220V, 50HZ AC supply. The triggering angle of the thyristors is 100°. (Assume the circuit is ideal.) a. Sketch the circuit b. Develop the load current expression and find the decay angle of the load current c. Sketch the load voltage and load current waveforms d. Calculate the RMS value of load voltage e. Calculate the RMS value of load current f. If the triggering angle of the thyristors is chosen as 60°. Explain the operation of the circuit.A certain impedance is given by 1012° N. Does the current lead or lag the voltage, and by how many degrees? Fill in the blanks. The current the voltage by
- What is the average power in ghe single phase ac circuit with the purely resistive load? It is sinusoidal steady state excitation.Q2. A series of motor (Load 1) and lighting (load 2) are connected to an AC source as shown in Figure Q2. The AC source, Vs, supplies 415420° V with frequency 50 Hz. Based on this information: sa 100 mH 150 Load 1 Load 2 i) Calculate the total load impedance. Vs ii) Calculate the current, I. Figure Q2. (iii) Write the waveform expressions in frequency domain for Vs and I. Draw a phasor diagram consists of Vs and / and state the relationship between Vs and I. (iv) Determine the power factor and calculate the real power, reactive power and apparent power. Establish the power triangle for the load.1. Write down a formula for the three-phase power factor, assuming perfectly sinusoidal and symmetrical conditions, using line-line voltage measurements. 2. Write down a formula that relates three-phase apparent power to active and reactive power. 3. Draw a graph that depict single-phase waveforms for a purely sinusoidal 50 Hz voltage and a lagging current.