The balanced system below has a phase voltage of 120 V. It supplies a balanced load coil that is composed of 3-ohm resistance and 0.011 H inductance through feeder lines that have 0.1-ohm internal impedance. Calculate the total true power and reactive power. Answer in the whole number.
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Kindly Solve it and give the complete solution. Also put the given and what is ask. Thanks
Note: Correct answer is
P= 15227W, Q= 19135VAr
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- A three-phase steel-treatment electric oven has aphase resistance of 10Ω and is connected atthree-phase 380-V AC. Computea. The current flowing through the resistors in wyeand delta connections.b. The power of the oven in wye and deltaconnections.Two loads connected according to the diagram below are connected to a three-phase network. All impedance elements are pure resistances and the two three-phases are symmetrical. Voltmeter V1 shows 250 V and voltmeter V2 shows 433 V. a) Calculate the voltage between L1 and L2 b) Calculate the current ID . c) Calculate the current IL . d) How big is cosφ1The balanced system below has a phase voltage of 120 V. It supplies a balanced load coil that is composed of 3-ohm resistance and 0.011 H inductance through feeder lines that have 0.1-ohm internal impedance. Calculate the total true power and reactive power. Answer in the whole number.
- Two balanced Y-connected loads in parallel, one drawing 15 kW at 0.6 power factor lagging andthe other drawing 10 kVA at 0.8 power factor leading, are supplied by a balanced, three-phase,480-volt source.d. ∆-connected capacitors are now installed in parallel with the combined load. Whatvalue of capacitive reactance is needed in each leg of the ∆ to make the source powerfactor unity? Give your answer in W.e. Compute the magnitude of the current in each capacitor and the line current from thesourceQuestion oneA balanced star connected load comprises of 20 ohm resistance and 0.07 Henry inductance in each branch. If the load supplied with 415V at 50Hz, calculatea) the line currentb) the power factorc) the total power supplied to the load PLEASE FOLLOW THIS APPROACH TO SOLVE THE QUESTION. THANK YOUStep OneDeduce the inductive reactance.STEP TwoWrite down a rectangular expression for the impedance per branch.STEP ThreeConvert the rectangular expression into polar expression.STEP FourBecause impedance will be involved in the analysis deduce the phase voltage.STEP FiveSolve for the phase current and hence the line current.STEPVSixUse the phase angle of the current to deduce the power factor. STEP SevenFind the apparent power.11. A 3-, 400-V symmetrical supply feeds a star-connected load consisting of non-reactive resistors of 3, 4 and 5 connected to the R. Y and 8 lines respectively. The phase sequence is RYB. Calculate (1) the load star point potential (i) current in each resistor and power dissipated in each resistor. (i)34.5 V (ii) 664 A, 59.7 A. 51.8 A (iii) 13.22 kW, 14.21 kW, 13.42 kW) Answer Need Asap will surely upvote
- Assertion (A): One watt meter method of three-phase power measurement is used for both balanced loads and unbalanced loads. Reason (R): In one-watt meter method of three phase power measurement, the total three phase power = 3*wattmeter reading. Choose the correct answer from the following. a. Both A and R are true and R is correct explanation of A b. A is true R is false c. A is false R is true d. Both A and R are true but R is not correct explanation of A Clear my choiceConsider the microgrid of Figure 3.66. A three-phase transformer, T1, israted at 500 kVA, 220 VY grounded/440 V delta, a transformerwith a reactance of 3.5%.Themicrogridis supplied from anAC bus of a PV generating station.The DC bus rated at 540 V.The distributionlineis 10mileslong and has a series impedance of 0.1 + j1.0 Ω per mile and local load of 100 kVA at 440 V. The microgrid is connected to the local power grid using a three-phase transformer T2, rated at 440 V Y grounded/13.2 kV delta,500 kVA with a reactance of 8%. Compute the per unitimpedance diagram of the microgrid system. Assume the voltage base of 13.2 kV on the local power grid side and kVA base of 500In a house there is a three-wire system configured as follows. A refrigerator with an impedance of (10 + j 10) Ω is connected to line L1 and to neutral, and to line L2 and neutral all the lighting in the house consists of 10 luminaires of 20 W each. In addition, there is a 240 V dryer that consumes 8 kW. Calculate a) current of line L1 and line L2 and neutral b) total power consumed.
- Three impedances Z1, Z2 and Z3 are connected in tee. The impedance Z1 is connected inseries with the supply voltage V1 while the impedance Z2 is connected in series with the voltageV2. If V1 = 200 volts, V2 = 120 volts, Z1 = (5+j4) ohms, Z2 = (10-j13) ohms, and Z3 = 15 bar angleof 15° ohms, calculate the currrent flowing in each impedance. Use Nodal analysis.Three impedances Z1, Z2 and Z3 are connected in tee. The impedance Z1 is connected inseries with the supply voltage V1 while the impedance Z2 is connected in series with the voltageV2. If V1 = 200 volts, V2 = 120 volts, Z1 = (5+j4) ohms, Z2 = (10-j13) ohms, and Z3 = 15 bar angleof 15° ohms, calculate the currrent flowing in each impedance. Use Superposition theorem.QUESTION 3: A certain three phase star connected load draws a line current of 100 A when a 3-ph voltage of 400 V has been supplied to its terminals. At this operating condition, this 3- phase load consumes a total real power of 50 kW. Find:[6] 1- The power factor of this load. 2- The reactive power consumed by this load. 3- If the power factor of this load is raised to 0.92 after connecting a 3- capacitor bank across its terminals. Find the total current supplied to the load and the capacitor bank