three identicial impedances of 15<60degree ohms are connected in wye to a three-phase, three-wire, 240 volt system. the lines between the supply and the load have impedances of 2 + j1 ohms. Find the line voltage magnitude at the load
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508 CHAPTER 11 . POLYPHASE CIRCUITS 11.40 In a balanced three-phase system, the source has an aboc phase-sequence and is connected in delta. There are two rallel wye-connected loads. The phase impedance of load i and load 2 is 4 The line impedance connecting the source to the loads is 0.3 + j0.2 2. If the curre IAN! = 10/20-Arms, find the delta currents in the source 4 Ω and 10 +/4 Ω, respectively. nt in the a phase of...
A. Three identical loads having an impedance of (8.66 + j5) ohms are connected in wye across a balanced three-phase system with sequence set with Vab = (300 + j0) volts. If a wattmeter is connected in the circuit with its current coil on line A and potential coil across lines A and C, determine the meter reading. B. A three-phase, 3-wire balanced delta connected load yields wattmeter readings of 1154 W and 557 W. Obtain the load resistance per...
3. A balanced three-phase delta connected load with 15+j10 ohms load on each balanced, wye connected source with Van branch is supplied by a -7.6240 KV, while the transmission line impedances are 1+7j on each line. Calculate the line currents (currents on the transmission lines) la, 1b, and 1c. (Hint: convert the Δ configured load into a Y configured load
4. (20 points) The three-phase Y-connected power supply has a line-to-neutral voltage KIN of 1.220° KV. A balanced-A load consisting of impedance Z1-20 30 Ω per phase is in parallel with a balanced-Y load having phase impedance of Z2 = 15245° Ω. Identical line impedances of Z1 = 3L15。Ω are in each of the three lines connecting the combined loads to the phase supply (a) Draw the per-phase equivalent circuit; (b) Find the line-to-line voltage Vab (magnitude and angle) at...
(2) A balanced-delta load consisting of impedances Zdelta = 30 + 20 j is connected to a 230V three-phase source. The lines connecting the load to the source each have impedance Zline = 1.0 + 1.5 j . Let the base voltage be 230V and the base power be 1 kVA. These base values are for line to line voltage and three phase power. Calculate per unit values of the magnitude of the line currents as well as...
4-9 Question Completion Status: QUESTION 4 A three phase delta source is connected to a three phase transformer. The primary of the transformer is connected in a delta configuration The line voltage on the primary is 240V. The turns ratio is 2:1. The secondary of the transformer is connected in a wye configuration. A wye connected load is attached to the secondary of the transformer. Each of the three load resistors has a resistance of 10 ohms. What is the...
A balanced three-phase network supplies a balanced load through a three-phase wye-wye connected transformer as shown in the following figure. Transformer Supply Network B8 Load Y-Y The wye-wye connected transformer has the following parameter: S 25 MVA Xir 15% 240/132 kV The three-phase load parameters are: Pload 20 MW pfload 0.8 The three-phase supply network line voltage and short circuit current are: Vnet 225 kV Inet_short= 15 kA. A. Calculate primary and secondary current rating. B. Calculate trans former actual...
A Δ-connected source supplies power to a Y-connected load in a three-phase balanced system. Given that the line impedance is (1 + j1) Ω per phase while the load impedance is (6 + j4) Ω per phase, find the magnitude of the line voltage at the load. Assume the source phase voltage Vab= 208 ∠0° V rms. The magnitude of the line voltage at the load is _______ Vrms.
I just need answers to f,g,and h connected motor is connected to Vi-L 120 3T/6 V-rms, 50 Hz three e resistance and inductance of each phase is 8-Ω and 0.04 H, respectively. The PS. A three-phase phase source. The wire between a source and the motor has 0.1-Ω of resistance and 1 mH inductance. nd the phase voltage. (2 pts.) a single-phase diagram of the system with its values. (5 pts.) c) Find the line current (magnitude and phase) for...
In a balanced three-phase system, the source is wye-connected and the source voltage of phase A is Van = ∠ 120 20 V. The load consists of two balanced wyes in parallel with phase impedances of 8 + j6 Ω and 12 + j8 Ω. If the line impedance is zero, find the line currents and the phase currents in each load. (Hint: use per phase analysis, then do angle shift for each phase.)