Example A three-phase, balanced delta-connected load of (4+j8) ohms is connected across a 400 V, 3-phase balance supply. Determine the phase currents and line currents. Assume the phase sequence to be positive sequence. Also calculate the power drawn by the load.
Q: The 3-phase load is connected to a balanced 2300V, abc source. In doing this, 3 conductors are used…
A: It is given that: phase voltage :Van=2300∠0°Load impedance:zL=0.5+j2ohm
Q: balanced three-phase system with a line voltage of 300 V is supplying a balanced Y-connected load…
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Q: For the star connected 3-phase circuit shown in the figure below, the line-line voltage is 208 V rms…
A: Given- Line to line voltage VL=208 VPower absorbed P=432 WPower factor cosϕ=0.6 leadingTo find-The…
Q: An Alternator having three-phase, 3-wire ABC system supplying an effective line voltage of 120 V,…
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Q: If a balanced 3 phase supply is provided to a pure resistive load, the current is in phase with the…
A: Phase anngle between voltage and current is depends upon the load . For Resistive load phase angle…
Q: In a three-phase, three-wire circuit, find the phasor line currents to a balanced Y load in which…
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Q: 8. A three-phase balanced load has voltage VAC= - 300 sin (wt + 80) V, CBA circuit, the line current…
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Q: Two wattmeter's are connected to measur the input power of a balanced three phase load by two…
A: Watt-merter reading W1 = 8800w W2 = 3500 W
Q: 4. A balanced Y-connected 400V voltage source is where Z, = 20-j40 and Z2 = 3+ j45 Ohms a connected.…
A: In this question we will find source current in per unit....
Q: H.W. 4: A balanced three-phase A-connected load is fed from a balanced three-phase circuit. The…
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Q: The input power to a 3-phase load is measured as 17kW. If the line voltage and power factor of the…
A: The input power to a 3-phase load is measured as 17kW. the line voltage and power factor of the load…
Q: A balanced three-phase load requires 1.8kW and power factor 0.5. If the line voltage at the…
A: The complex power in an AC system is defined as the product of rms value of applied voltage and…
Q: The c-phase voltage of a balanced three-phase Y-connected system is 450 −25° V. If the phase…
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Q: Two wattmeter’s are connected to measure the input power of a balanced three phase load by two…
A: For this problem we can easily found power factor. As wattmeter is connected with reverse switch we…
Q: A balanced star-connected load of (8 + j6) N per phase is connected to a balanced 3-phase 400-V…
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Q: 2. A balanced 3-phase a-b-c system with line-to-line voltage Vab = 20820⁰ V supplies to a balanced A…
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Q: The unbalanced four wire Y-connected load has balanced voltages of 415 V and the RYB-sequence. By…
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Q: For a 3-phase balanced load condition, each phase has the same value of resistance, impedance, and…
A: in the balanced condition same value of current flows through the all three-phase
Q: The 3-phase balanced load star-connected has impedance per phase of Zy=8+j6 ohm. If the load…
A: It is given that: Zy=8+j6 ohmV=208 V
Q: Zy Is Zy S Zy IT
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Q: A balanced three-phase source supplies balanced delta load having 39 angle -40 ohms per phase. The…
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Q: Q. NO.2 In a balanced A-connected three phase load, applied with three phase supply 100X V rms…
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Q: Q.21: For the circuit shown, let Z,=60Z-30°Q, Z2=24230°0 impedances, and the phase voltage be a…
A: It is given that: Z1=60∠-30°ΩZ2=24∠30°ΩZ3=80∠0°ΩVan=480∠0°Vrms
Q: 1. With neat diagram, discuss the 3-phase power measurement using three wattmeter method and write…
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Q: A 480 V, 60 Hz, three-phase source is connected to a delta-connected load, in which each element has…
A: Given data, A three phase source is connected to a delta connected load. VL=480 Vf=60 HzZph=9+j3 Ω
Q: Q6 Construct the phasor diagram for a balanced star connected load with lagging currents and prove…
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Q: 2. One phase voltage of a three-phase wye-connected load is Vbn=340VZ+20°. Ib vab 340V@+20" Vbc Vca…
A: Fig: Given phasor diagram
Q: A three-phase supply, with an effective line voltage of 240 V, has an unbalahced delta connected…
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Q: Select the following statement that is TRUE for an advantage of a three-phase system: O a) Three…
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Q: A balanced delta connected load of 14+j16 ohm per phase is connected at the end of three phase line.…
A: Given: A balanced delta connected load per phase impedance=(14+j16) ohm Per phase line…
Q: For the balanced positive-sequence three-phase circuit below, given that Var-100410° V and Za=15455°…
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Q: Two wattmeter’s are connected to measure the input power of a balanced three phase load by two…
A: As one of wattmeter is connected with reverse switch so it will reading negative power.
Q: 2.40 A balanced three-phase 240-V source supplies a balanced three-phase load. If the line current…
A: We will draw phasor diagram indicating phase voltage and phase current in load. From phasor we will…
Q: Consider a three-phase Y-connected source feeding a balanced-Δ load. The phasor sum of the line…
A: Please find your answer below in step 2.
Q: A balanced delta connected generator supplies a line voltage of 180v rms to a balanced load…
A: The line voltage supplied by delta source is: The per phase voltage on star side is given as: The…
Q: A Y-Y three-phase system has a source of 380 V and a load of impedance of 6+j5 Ohm/phase through a…
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Q: An Alternator having three-phase, 3-wire ABC system supplying an effective line voltage of 120 V,…
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Q: A balance 3-phase, inductive delta-connected load is connected to a balance 3-phase, 100V, abc…
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Q: na two-phase circuit, find the unbalance factor of the load voltage when one wire is disconnected.…
A: To find unbalanced factor in two phase circuit. Explanation below
Q: Q.20: For the circuit shown, let Z,=Z2=Z3=60230°Q are phase impedances, and the phase voltage be a…
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Q: A balanced negative sequence 3-phase system consist of Y-connected load supplied by a balanced…
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Q: Two balanced Y-connected loads in parallel, one drawing 15 kW at 0.6 power factor lagging and the…
A: In this question, We need to determine the the power factor of the combined load and state whether…
Q: A set of balanced three-phase transmission lines with line-to-line voltages of 13 kV is connected to…
A: Given: For balanced 3-phase star-connected load, per-phase impedance Z=8+3j Ω=8.544∠20.55° Ω,…
Q: Z WL ab V V. = 480 L0° ab Z PL Z srL A balanced Y-connected 3 phase voltage source with Vab = 480…
A: Since the given system of source and load is balanced, so let us do the calculation on Per phase…
Q: Two wattmeter's are connected to measure the input power of a balanced three phase load by two…
A: i have explained in detail
Q: (b) A balanced Y-connected load has phase voltage of 230 V and positive phase sequence. The…
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Q: A balanced load consists of three coils with each coil having a resistance of 10 Ω and an induction…
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Q: For a 3-phase Y-connected balanced load, at the terminals the following are given: Vea = 4804170°V…
A: It is given that: Vca=480∠170°VIb=40∠-130°A
Q: A three-phase supply, with the line voltage 240 V rms positively phased, has an unbalanced…
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- A balanced three-phase 240-V source supplies a balanced three-phase Load. If the line current IA is measured to be 15 A and is in phase with the line-to-line voltage, VBC, find the per-phase load impedance if the load is (a) Y-connected, (b) -conneeted.Two 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?Figure 2.33 gives the general -Y transformation. (a) Show that the general transformation reduces to that given in Figure 2.16 for a balanced three-phase load. (b) Determine the impedances of the equivalent Y for the following impedances: ZAB=j10,ZBC=j20, and ZCA=j25. ZAB=ZAZB+ZBAC+ZCZAZCZA=ZABZCAZAB+ZBC+ZCAZBC=ZAZB+ZBAC+ZCZAZAZB=ZABZBCZAB+ZBC+ZCAZCA=ZAZB+ZBAC+ZCZAZBZA=ZCAZBCZAB+ZBC+ZCA
- Two balanced three-phase loads that are connected in parallel are fed by a three-phase line having a series impedance of (0.4j2.7) per phase. One of the loads absorbs 560 kVA at 0.707 power factor lagging, and the other 132 kW at unity power factor. The line-to-line voltage at the load end of the line is 2203V. Compute (a) the line-to-line voltage at the source end of the line. (b) the total real and reactive power losses in the three-phase line, and (c) the total three-phase real and reactive power supplied at the sending end of the line. Check that the total three-phase complex power delivered by the source equals the total three-phase comp lex power absorbed by the line and loads.A balanced -connected impedance load with (12+j9) per phase is supplied by a balanced three-phase 60-Hz,208-V source, (a) Calculate the line current, the total real and reactive power absorbed by the load, the load power factor, and the apparent load power, (b) Sketch a phasor diagram showing the line currents, the line-to-line source voltages, and the -load currents. Use Vab as the reference.A single-phase source is applied to a two-terminal, passive circuit with equivalent impedance Z=3.045, measured from the terminals. The source current is i(t)=22cos(t)kA. Determine the (a) instantaneous power, (b) real power, (c) reactive power delivered by the source, and (d) source power factor.
- A three-phase line with an impedance of (0.2+j1.0)/ phase feeds three balanced three-phase loads connected in parallel. Load 1: Absorbs a total of 150 kW and 120 kvar. Load 2: Delta connected with an impedance of (150j48)/phase. Load 3: 120 kVA at 0.6 PF leading. If the line-to-neutral voltage at the load end of the line is 2000 v (rms), determine the magnitude of the line-to-line voltage at the source end of the line.Consider the balanced 3-phase circuit shown below (a) Sketch the single phase equivalent circuit. Show all values on the sketch. (b) Calculate the following: the total complex power absorbed by the wye connected load. the phase current, ICA.A 220-V, 3- φ voltage is applied to a balanced delta-connected 3- φ load of phase impedance (15 + j20) Ω. Find the line voltage in volts
- A balanced delta-connected load has phase impedances of 4+j3 Ohms. It is connected to balanced transmission lines, with Vab = 1.5kV @ 15 degrees. a) What is the current through each of the load phases? b) What is the current through each of the transmission lines? c) Which ACSR cable should be used for these transmission lines to give a 20% current rating margin for this load?In the figure, the circuit is given as VRS =√3 . 60V and Zy = 6 + j8. Find the value of C to be connected in order to make the power drawn from the system in a phase 1, to make the load current 1, and to make cos(φ) 1.Let the three-phase electrical system be illustrated in Figure . Knowing that its phase sequence is ABC and that Vcb=380∠135°V, determine the following: a) The value of the line currents demanded by each of the loads and supplied by the source. b) The power and power factor of each load and source. c) The power of the capacitor bank that must be installed to correct the power factor to 0.95 lagging. d) The currents supplied by the source after installing the capacitor bank. e) The percentage reduction of the total apparent power supplied by the source after installing the capacitor bank.