Introductory Circuit Analysis; Laboratory Manual For Introductory Circuit Analysis Format: Kit/package/shrinkwrap
13th Edition
ISBN: 9780134297446
Author: Boylestad, Robert L.
Publisher: Prentice Hall
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Chapter 24, Problem 31P
To determine
The value of total watts, volt-ampere reactive, volt ampere and power factor
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1. A three-phase, four wire, ABC system with an a line voltage of 200 Volt, has three impedances of 25
/45ᴼ in a Delta connection. Determine the line current, true power, reactive power and apparent
power and draw the voltage-current phasor diagram.
A balanced Y - connected load having a 25 Ω resistance in each leg is connected to a three -phase , four wires, Y-connected ABC sequence AC generator, if the line volatge EAB=, calculate
1. The phase voltages of the generator
2. The phase voltages of the load
3. The phase currents of the load
4. The line currents
Obtain the readings of two wattmeter’s in a three-phase, three-wire system having effective line voltage of 240 V. The load is a balanced delta connected load impedance of 20 cis 80° ohms.
Chapter 24 Solutions
Introductory Circuit Analysis; Laboratory Manual For Introductory Circuit Analysis Format: Kit/package/shrinkwrap
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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- Two wattmeters are used to measure the total power drawn by a balaced delta connected load. If the wattmeters read 1200 W and 800 W respectively, and the line to line voltage is 208 V, solve for the impedance per phase of the load.arrow_forwardA balanced Δ - connected load having a 15 Ω resistance in each leg is connected to a three -phase , four wires, Y-connected ABC sequence AC generator, if the line volatge EAB=, calculate 1. The phase voltages of the generator 2. The phase voltages of the load 3. The phase currents of the load 4. The line currentsarrow_forwardA balanced 3-phase load draws 120 amperes line current at 230 volts line to line, 0.848 pf lagging current. Solve for the real power.arrow_forward
- 1. Solve the following problem: A THREE-PHASE CIRCUIT WHERE THE BALANCED DELTA LOAD OF 36 + J54 OHMS IS SUPPLIED BY 8,602 OHMS IMPEDANCE CONDUCTORS WITH A PHASE ANGLE OF 54,462 DEGREES. IF THE GENERATOR VOLTAGE IN PHASE B IS 100 VOLTS ANGLE - 120 DEGREES. CALCULATE: A) THE VOLTAGE BC IN LOAD. B) THE POWERS IN THE CONDUCTORS. C) THE POWER TRIANGLE IN THE LOAD.arrow_forwardThe c-phase voltage of a balanced three-phase Y-connected system is 450 −25° V. If the phase sequence is negative, what is the value of VAB?arrow_forward1. a) Find the reading of each wattmeter in the circuit shown if ZA=20 30° Ω, ZB=60 0° Ω, and ZC=40 −30° Ω. 2. b) Show that the sum of the wattmeter readings equals the total average power delivered to the unbalanced three-phase load.arrow_forward
- The input power to a 3-phase load is measured as 16kW. If the line voltage and power factor of the load are 418 V and 0.6, then the value of line current is Answer and unitarrow_forwardProblem 2B A star-connected three-phase load absorb 3000 W with power factor 0.433 lagging has a resistance series with an inductance in each branch. It is connected to the 400Vrms (line voltage), 4-wire, 50 Hz, 3-phase supply with the phase sequence is ABC and phase-A as reference has angle 10°.a. Sketch the circuit diagram of the system.b. Calculate the phase voltages of each loads. c. Calculate the phase currents that flow into each load.d. Draw for both of the phasor diagram of load currents and load voltages.arrow_forwardA balanced star load with impedances of 6∟45o ohms is connected to a three-phase, four-wire, 208 volt, ABC system. Find the line currents, the neutral current, the power per phase and the total power (S, P, Q).arrow_forward
- A three phase transmission line to line capacitive reactance value is 12 ohms. If the charging current of a line per phase is 37 A. Choose the corresponding phase voltage from the values given below. 21.07V 0.32V 444.00V 256.34Varrow_forwardIn the balanced three-phase circuit shown, the current coil of the wattmeter is connected in line aA, and the potential coil of the wattmeter is connected across lines b and c. Show that the wattmeter reading multiplied by 3 equals the total reactive power associated with the load. The phase sequence is positive.arrow_forwardIf Vab = 400 V in a balanced Y-connected three-phase generator, if assuming the abc phase sequence then the phase voltage Van isarrow_forward
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