10.58 The impedance Z₁ in the circuit in Fig. P10.58 is ad- justed for maximum average power transfer to Z₁. The internal impedance of the sinusoidal voltage source is 4 + j7 n. a) What is the maximum average power delivered to ZL? 120/0° V(rms) b) What percentage of the average power delivered to the linear transformer is delivered to Z₁? Figure P10.58 4Ω j7Ω | 12 Ω www Source www j10 Ω j5 n3 1102 j23: Transformer ZL -Load-

10.58 The impedance Z₁ in the circuit in Fig. P10.58 is ad- justed for maximum average power transfer to Z₁. The internal impedance of the sinusoidal voltage source is 4 + j7 n. a) What is the maximum average power delivered to ZL? 120/0° V(rms) b) What percentage of the average power delivered to the linear transformer is delivered to Z₁? Figure P10.58 4Ω j7Ω | 12 Ω www Source www j10 Ω j5 n3 1102 j23: Transformer ZL -Load-

Introductory Circuit Analysis (13th Edition)

13th Edition

ISBN:9780133923605

Author:Robert L. Boylestad

Publisher:Robert L. Boylestad

Chapter1: Introduction

Section: Chapter Questions

Problem 1P: Visit your local library (at school or home) and describe the extent to which it provides literature...

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The peak amplitude of the sinusoidal voltage source in the circuit shown in the figure is 180 V, a phase of 0 degrees, and its frequency is 5000 rad/s. a)Find VTH and ZTH for the thevenin equivalent circuit. b)Draw the thevenin circuit. c)Calculate the average power delivered to the load (between points a and b) when the load consists of a resistor and capacitor with RL=2000 0 and CL=0.2 uF. d)Determine the settings of RL and CL that will result in the most average power being transferred. e)What is the average power in (c)? Is it greater than the power in (a)? 6 kN 0.6 H a Vg 12 k2 9. +
For the circuit shown, what is the reactive power, Q, consumed by the load impedance? (Assume the voltage source is in RMS.) 15 0 Vs = 150 20° V (a 150 mH w = 300 rad/s
Required information A 110-V rms, 60-Hz source is applied to a load impedance Z. The apparent power entering the load is 120 VA at a power factor of 0.707 lagging. NOTE: This is a multi-part question. Once an answer is submitted, you will be unable to return to this part. Find the rms current supplied to the load. The rms current supplied to the load is A rms.
Required information An ac motor with impedance ZL = (2.8 +1.60) Q is supplied by an RMS value of 220-V, 60-Hz source. NOTE: This is a multi-part question. Once an answer is submitted, you will be unable to return to this part. Find the power factor, the average power, and the reactive power. The power factor of the given ac motor is The average power of the given ac motor is The reactive power of the given ac motor is kW. KVAR.
5. An impedance draws a current i(t) = 10sin(wt-30°) ampere from a voltage v(t) = 220cos(@t-65°) volts. Determine: a. The current in polar form (peak) b. The voltage in polar form (peak) C. The current in polar form (RMS) d. The voltage in polar form (RMS) e. The impedance
For the circuit shown below, the value of RL that maximizes the average power that the purely resistive load RL can absorb is required. Also, find Pmax. 3000 N j4000 a. 10/30° V (rms) R b Select one: O a. R=3000 2 and Pmax = 0.833W O b. None of these OC R=5000 2 and Pmax = 0.5W O d. R=5000 2 and Pmax = 0.625W
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") For the circuit shown, answer the questions from 7 to 10. The voltage and current given are in RMS values -/21 80 j6N 5020° V 40Z20° V 7) The apparent power consumed by the 4 ohms resistor is ...... VA: a) 4.38 2-152 e) 13.45 b) 24 0 22.48 c) 4.76 g) 4.38 d) 8.76 h) None of the above 8) The complex power supplied by the 50 volts source is..... VA: c) 200+j147 g) 145.67 Z 23.36° d) 145+j0 h) None of the above b) 84,67 2-154.36° a) 125-j87.5 e) 289.65 Z 85.23 0 244.52 30.12° 9) The power factor of the 50 volts source is.....: b) unity 10 707 lag b) 0.86 lag 00.707 lead c) 0.9 lag g) 0.8 lead d) 0.95 lag h) None of the above 1m The complex power consumed by the 8+j6 impedance is....VA: a) IN6 1236.87 e) 76 65 85.23 b) 423.6 2-21.36 0 142.05 Z 36.87 c) 239.1 Z 36.87° g) 523.7 Z 36.87° d) 423.6 36.87° h) None of the above
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Q5. For the circuit shown below, fmd the current and complex power in each branch of the circuit. 101 j10n j10 N 202 50 /0 (rms) -j102
PART 2 A load connected to a 120 Vrm source is drawing 1,600 VA at 0.6 power factor lag. a) What is the reactive power absorbed by the load? Answer: VAR b) A capacitor with impedance -j20 Q is connected across (or in parallel with) the load. What is the reactive power generated by the source after the addition of the capacitor? VAR Answer:
. Given: An inductive load draws an apparent power of 5 kVA at a lagging power factor of 0.75. The load voltage is 1.2 KVRMS at 60 Hz. A 5-uF capacitor is connected in parallel to the load. Find: What is the new power factor of the system? -. Given: You have a complex inductive load that is dropping 240 VRMS. The operating frequency is 60 Hz. The current in the load is 9.615 ARMS. The load is dissipating 1.5 kW of average power. Find: Determine the value of a capacitor to attach in parallel with the load to change the load such that its power factor is 1.0.