QUESTION 4 A balanced wye-delta system has a phase voltage of 108V RMS. Find the magnitude of the impedance that will draw 2.1A RMS of load current. O 120 1kQ 890 O 2000
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- In a balanced system, the phasor sum of the line-to-line voltages and the phasor sum of the line-to-neutral voltages are always equal to zero. (a) False (b) TrueConsider a three-phase Y-connected source feeding a balanced- load. The phasor sum of the line currents as well as the neutral current are always zero. (a) True (b) FalseTwo balanced Y-connected loads, one drawing 10 kW at 0.8 power factor lagging and the other IS kW at 0.9 power factor leading, are connected in parallel and supplied by a balanced three-phase Y-connected, 480-V source. (a) Determine the source current. (b) If the load neutrals are connected to the source neutral by a zero-ohm neutral wire through an ammeter, what will the ammeter read?
- A positive-sequence balanced three-phase wye-connected source supplies power to a balanced wye-connected load. The line voltage is 100 V rms. The line impedance is 2Ω per phase, and the load impedance is 50 + ?30Ω per phase. Determine the load voltage if ∠Van = 0.A balanced three-phase source with grounded neutral has line-to-line voltages of 208 volts with ab-bc-ca sequence. It supplies power to an unbalanced three-phase delta load with impedances: Zab = 80+j60; Zbc = 60-j25; Zca = 45+j60 ohms. What is the magnitude of the overall total true power of the system in watts.Assume that the phase-voltage magnitudes for a wye system are 100V. Find the magnitude of the line-to-line voltage. A. 57.74V B. 141V C. 70.7V D. 173V
- Three equal impedances of (8 + j6) ohms are connected across a 3-phase supply. The phase voltages areVa =(220 + j0), Vb = (-j220), and V C = (-100 + j220) V. Calculate the symmetrical components of thevoltages and currents.A balanced three-phase source with grounded neutral has line-to-line voltages of 230 volts with ab-bc-ca sequence. It supplies power to an unbalanced three-phase delta load with impedances: Zab = 80+j60; Zbc = 60-j25; Zca = 45+j60 ohms. What is the magnitude of the line current in line a in amperes?Given a balanced three-phase system - Δ-connected load with an impedance of 12 + j9 Ω/ϕ - Y-connected source - with an acb sequence - source voltage in the b-phase: 240∠-50⁰ - line impedance: 1 + j1 Ω/ϕ Determine the current in the a-phase of the load IaA Blank 1 A (rms) EXPRESS YOUR ANSWER IN POLAR FORM
- Solve for phase and line current of the given balanced three phase system with the ff loads: Vab= 220∠0 V and negative sequence Zan=6+2j, Zbn=4.66-5j, Vcn=10+j0.full detail with drawing/graph Three balanced impedances ZA = ZB = ZC = 19.01 + j11Ω are connected in delta across a balanced three phase source Vab = 220V. Determine the: a. Phase currents b. Line currentsA three phase star connected load is represented a by a system of currents namely: IR = 10 – j5A, IY = 10 + j5A, IB = -5 – j10A. The phase voltages remained in their balanced state and are equal to 110V. a) Neatly draw the system of currents. b) Briefly state whether the system is balanced or not. c) What is the value of the unbalanced current (give your answer in the polar form that is, in magnitude and angle)