.A balanced 40 Ohms Y-connected load is connected to a 480V (line voltage), three phase source. Find the rms value of the line current
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- The instantaneous power absorbed by the load in a single-phase ac circuit, for a general R LC load under sinusoidal-steady-state excitation. is (a) Nonzero constant (b) Zero (c) Containing double-frequency componentslši 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 IIConsider the circuit shown. Find the following: a. Total load impedance seen by the voltage source. b. Complex power delivered by the source. c. Average power delivered by the source. d. Reactive power delivered by the source. e. Load power factor and power factor angle.
- In the 3-phase circuit in the figure, f = 2000 Hz. Find line and phase voltages and currents for the load.(in amplitude and phase).Three Impedances each of (8 - j24)2 are connected in mesh across a three-phase 420V ac supply. Determine the phase current, line current, active power, reactive power drawn from supply. Also draw the Phasor diagram for the mesh connection and marks the Line current ,phase current line voltage and phase angle between phase current and pahse voltage. phase current (Ip) Line current real power reactive powerThere is an installation with two equal triphasic loads of 300 kVA each and a power factor of 0.9 lagging. When connecting a pure reactive element in parallel, the reactive power at the entrance of the installation is 150 kVARS, with a lagging power factor. We can say that: a) A bank of reactors was connected and the fp deteriorated. b) A capacitor bank was connected and the pf deteriorated. c) A bank of reactors was connected and the fp improved. d) A capacitor bank was connected and the pf improved. e) None of the above
- For the given circuit below a. Calculate E, IR, and IL, in phasor form.b. Calculate the total power factor (leading or lagging) and the average power delivered to the circuit.c. Draw the admittance diagram and draw the phasor diagram of the currents Is, IR, and IL, and the voltage E.The total power drawn by the two-impedance load in parallel is 26kW at 0.98 power factor lagging, it is being supplied by a 230-volts AC source. One of the loads (Load 1) takes 16kVA at 0.77 power factor lagging. What is the reactive power of the unknown impedance (Load 2)?Consider a 10 kVA, 200/400 V, 50 HZ: single-phase tranformer has the folloving test results:0.C. test: 200 V, 0.6A, 63 W (L.V.side)S.C. test : 20 V, 25A, 85 W (H.V. side)Deternine:i- The eficiengy at 75 % offiull-load at 0.9 leading power factor.ii -The secondary terminal voltage on fill-load at tunity power facton
- 1. a) Find the rms magnitude and the phase angle of ICA in the circuit shown. 2. b) What percent of the average power delivered by the three-phase source is dissipated in the three-phase load?Find the RMS line voltage VL at the source of the circuit. As shown the RMS load phase voltage is 100V and the line impedance is given in the figure.8. The total power supplied to a balance delta load is found in the same way as for a balance wye load. True False Either Neither 12. A load of 20 + j35 ohms is connected across a 220 V, 60 Hz supply. Find the reactive power of the load in var. 595 2420 1042 1382 13. A type of DC source where the characteristic output voltage has perfect unidirectional waveform and is based on electrochemical principle. Generator Inverter Converter Battery 14. Calculate the Rf of a circuit whose impedance is 20+j35 and current of 2A. 0.86 0.91 0.50 0.71 15. What capacitor shall be installed in parallel with a circuit to achieve a unity power factor if the reactive power of a circuit is 200VARS and the voltage is 100V. 80.45 microfarad 53.05 microfarad It's already in unity 62.45 microfarad