4. For the following system, compute (a) Zin (b) Power delivered to the load ZL ZG 50 Ω 10Vrms Zin Z = 75 Ω Ζ2= 50 Ω ZL 40 0.352 0.652
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- A single-phase, 120V(rms),60Hz source supplies power to a series R-L circuit consisting of R=10 and L=40mH. (a) Determine the power factor of the circuit and state whether it is lagging or leading. (b) Determine the real and reactive power absorbed by the load. (c) Calculate the peak magnetic energy Wint stored in the inductor by using the expression Wint=L(Irms)2 and check whether the reactive power Q=Wint is satisfied. (Note: The instantaneous magnetic energy storage fluctuates between zero and the peak energy. This energy must be sent twice each cycle to the load from the source by means of reactive power flows.)zain 1Q 1: Asiacell The generator convert from PV to PQ if the active power of the generator exceed the * maxinum and minimum limits between the maximum and mimium limit equal to the load power Non of them With base voltage of 450 kV. The actual voltage of the generator is 560 kV. The magnitude voltage in the parameter of the PV generator in the nepaln software is * 1.2444 pu 450 kV 124.44 % 0.8036 pu 80.36 % Non of themFor the circuit shown, determine the current through the 2+j5 ohms impedance. jsn 2.2 2 -M m BLIOA 5L20 AN 4 jios 100 20 A 3.40 2
- The values of the elements for the given circuit are given below.What is the maximum average power that can be transferred to the ZL load?R1 = 400 OhmsL = 500j OhmsR2 = 100 OhmsBy Nodal Analysis, determine the voltage V₂ of the circuit 252 jsn v m 8410A 5/2012 34.52 A+ jiort 2073 100204Using Figure 1, Vs 50V-15 339 Hz R1 $1100 R2 100 www XL1 320 HH XC1 Figure 1 700 R3 600 13 R4 400 XL2 1902 XL3 450 XC2 650 a. Determine the total circuit impedance, ZT. b. Calculate current IT. c. Calculate currents I, and I3. State the value of these currents in both rectangular and polar form. d. For each of the currents determined in part c, answer the following: Is the current leading, lagging, or in phase with the source voltage. e. Use the voltage-divider rule to determine the voltages across XL1 and Xc2.
- H* 3G zain IQ Asiacell The generator convert from PV to PQ if the active power of the generator exceed the * maxinum and minimum limits between the maximum and mimium limit equal to the load power Non of them With base voltage of 450 kV. The actual voltage of the generator is 560 kV. The magnitude voltage in the parameter of the PV generator in the nepaln software is * O 1.2444 pu O 450 kV O 124.44 % O 0.8036 pu 80.36 % Non of themThe values of the elements for the given circuit are given below.The maximum average power that can be transferred to the ZL load iswhich one?R1 = 400 OhmsL = 1000j OhmsR2 = 500 OhmsXL=62 R1=40 Is R2=90 + + E1=100V20° AC R3=80 V3 Xc=72 ZT a. Calculate the total impedance (ZT). b. Compute the source current (Is). c. Find the current across the capacitor Xc. d. Calculate the voltage across the resistor R3. e. Find the average power delivered to the circuit (PT). f. Find the total power factor (Fp).
- 7. For the circuit below, calculate the value of Z₂ for maximum average power transfer to the load. In addition, determine the value of the maximum average power absorbed. (Hint: One approach is to find the open-circuit voltage and the short-circuit current.) j4 2 Vx -j2 n 16 Vx20 4/0° V ZLV1 R1 www L1 R2 L2 VL L3 R3 V2 Given: V1 1992/0°,V2= 203⁄65°, R1=1.62, L1= j22, R2=902, L2= j49N, R3= 0.9N, L3=j4.6N, C=- j2120. Calculate the magnitude of the load voltage, V₁.2. Given that vs(t) = 100cos cot volts, f= 50 Hz, R₁ = 100 ohm, R₂ = 200 ohm, RL = 250 ohm, C = 40 uF, L = 0.5 H. R1 L Vs =C VL R₁ Problem 2 a.) Find the power in the load RL-L b.) Find R and L so that the average power of the RI-L two-pole will be maximum. R2 Zx