Obtain the power factor of a two-branch parallel circuit where the first branch has Z¡ = 2+ j4 2, and the second Z, = 6+j0 2. To what value must the 6-2 resistor be changed to result in the
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- Three loads are connected in parallel across a single-phase source voltage of 240V(RMS). Load 1 absorbs 15 kW and 6.667 kvar; Load 2 absorbs 3 kVA at O.96PF leading; Load 3 absorbs 15 kW at unity power factor. Calculate the equivalent impedance, Z, for the three parallel loads, for two cases: (i) Series combination of R and X, and (ii) parallel combination of R and X.Obtain the power factor of a two-branch parallel circuit where the first branch has Z 1 = 2+ j4 Ohm and the second Z 2 = 6 + j 0 Ohm. To what value must the 6- Ohm resistor be changed to result in the overall power factor 0.90 lagging?α=4 β=4For the adjacent circuit, Vab=(400+5β)V is given and the source part is balanced. Since it is known as ZAN=j2α Ω, ZBN= 3α Ω and ZCN=-j3α Ω, calculate the value of the current Ib by its angle, ignoring the impedances of the transmission lines.Can you please post your solutions, it's very important
- A balanced load of phase impedance 100Ω and power factor 0.8 is Star-connected to400v, 3 supply. Calculate the power dissipated.Determine the Thévenin equivalent circuit to calculate the powers: active, reactive and apparent of the following circuit; as well as the power factor in the load ZL.Analyze the:Figure Q2(a) Impedance seen by the source.(b) Coupling coefficient, K when angular frequency, ω = 4 rad/s .(c) Current through booth impedance 4 Ω, I1 and I2.
- In a R-C parallel circuit, total current is out of phase with the applied voltage." True False In a R-C parallel circuit, total current is out of phase with the applied voltage." True False In parallel-connected ac circuit, the value of the equivalent admittance of the circuit is equal to the phasor sum of the reciprocal of the individual admittances. " True FalseQUESTION 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 bankFor the circuit shown below 1.Draw power triangle for each load 2. Find PT,QT,ST,PFT for the source 3. Draw the complete power triangle 4. Compute Is 5. Raise the power factor to unity (1) 6. Compute Is after raising the power factor
- For the load in the figure: a) Calculate its impedance equivalent Z based on its elements R (1Ω), L (1Ω) and C (1Ω), and calculate its power factor b) Correct the load by adding other R, L and / or C elements, so that its power factor is 0.95A total current of 10 A flows through the parallel combination of three impedance : (2− j5) Ω, (6 + j3) Ω, and (3 + j4) Ω. Calculate the real, reactive, and apparent powersin each branch. Find also the p.f. of the combination.1. In a delta/delta system, with source phase- voltages of 100V and load phase resistances of 10Ω, calculate the apparent power in each phase. A. 1kVaB. 5kVaC. 50kVaD. 10kVa 2. Find the total true power for the circuit described in #1 A. 30kW B. 15kW C. 1.5kW D. 3kW