EBK INTRODUCTORY CIRCUIT ANALYSIS
13th Edition
ISBN: 9780100668232
Author: Boylestad
Publisher: YUZU
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Chapter 24, Problem 41P
A balanced, three-phase,
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A star-connected three phase power pack is connected to balanced star-connectedload of 2 + j3 Ω. The line current is 2∠0⁰ A. Assuming negligible impedance onthe cable, calculate:a) the phase and line voltages from the source. b) the real and reactive powers of the circuit.
Please answer help for "c" and "d".
The total power delivered to a balanced three-phase load when operating at a line voltage of 2400√3V is 720 kW at a lagging power factor of 0.8. The impedance of the distribution line supplying the load is 0.8 + j6.4Ω/ϕ. Under these operating conditions, the drop in the magnitude of the line voltage between the sending end and the load end of the line is excessive. To compensate, a bank of Y-connected capacitors is placed in parallel with the load. The capacitor bank is designed to furnish 576 kVAR of magnetizing reactive power when operated at a line voltage of 2400√3V.
a. What is the magnitude of the voltage at the sending end of the line when the load is operating at a linevoltage of 2400√3V and the capacitor bank is disconnected?b. Repeat (a) with the capacitor bank connected.
c. What is the average power efficiency of the line in (a)?d. What is the average power efficiency in (b)?e. If the system is operating at a frequency of 60 Hz, what is the…
A three-phase system having an rms line voltage of 141.4V is connected to a delta balanced load with impedance Z=15 angle30^. a) Obtain the reactive, active, apparent power and the power factor b. Solve part (a) but with a star-connected load with the same impedance value.
Chapter 24 Solutions
EBK INTRODUCTORY CIRCUIT ANALYSIS
Ch. 24 - A balanced V load having a 10 resistance in each...Ch. 24 - Repeat Problem 1 if each phase impedance is...Ch. 24 - Repeat Problem 1 if each phase impedance is...Ch. 24 - The phase sequence for the Y-Y system in Fig....Ch. 24 - Repeat Problem 4 if each phase impedance are...Ch. 24 - Repeat Problem 4 if each phase impedance is...Ch. 24 - For the system in Fig. 24.43, find the magnitude...Ch. 24 - Computer the magnitude of the voltage EAB for the...Ch. 24 - For the Y-Y system in Fig. 24.45: a. Find the...Ch. 24 - For the Y-Y system of Fig. 24.46 the impedance of...
Ch. 24 - A balanced load having a 20 resistance in each...Ch. 24 - Repeat Problem 11 if each phase impedance is...Ch. 24 - Repeat Problem 11 if each phase impedance is...Ch. 24 - The phase sequence for the Y- system in Fig....Ch. 24 - Repeat Problem 14 if each phase impedance is...Ch. 24 - Repeat Problem 14 if each phase impedance are...Ch. 24 - Prob. 17PCh. 24 - For the connected load in Fig. 24.49: a. Find the...Ch. 24 - A balanced V load having a 30 resistance in each...Ch. 24 - Repeat Problem 19 if each phase impedance is...Ch. 24 - Prob. 21PCh. 24 - Prob. 22PCh. 24 - Prob. 23PCh. 24 - Repeat Problem 22 if each phase impedance is...Ch. 24 - Prob. 25PCh. 24 - Prob. 26PCh. 24 - Prob. 27PCh. 24 - The phase sequence for the - system in Fig....Ch. 24 - Repeat Problem 28 if each phase impedance is...Ch. 24 - Repeat Problem 28 if each phase impedance is...Ch. 24 - Prob. 31PCh. 24 - Prob. 32PCh. 24 - Prob. 33PCh. 24 - Find the total watts, volt-amperes reactive,...Ch. 24 - Prob. 35PCh. 24 - Find the total watts, volt-amperes reactive,...Ch. 24 - Find the total watts, volt-amperes reactive,...Ch. 24 - Prob. 38PCh. 24 - Prob. 39PCh. 24 - Find the total watts, volt-amperes reactive,...Ch. 24 - A balanced, three-phase, -connected load has a...Ch. 24 - A balanced, three-phase, Y-connected load has a...Ch. 24 - Find the total watts, volt-amperes reactive,...Ch. 24 - The Y-Y system in Fig. 24.53 has a balanced load...Ch. 24 - Prob. 45PCh. 24 - Prob. 46PCh. 24 - Repeat Problem 46 for the network in Fig. 24.47.Ch. 24 - For the three-wire system in Fig. 24.55, properly...Ch. 24 - Sketch three different ways that two wattmeters...Ch. 24 - For the Y- system in Fig. 24.56: Determine the...Ch. 24 - For the system in Fig. 24.57: Calculate the...Ch. 24 - For the three-phase, three-wire system in Fig....
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