Loose Leaf for Engineering Circuit Analysis Format: Loose-leaf
9th Edition
ISBN: 9781259989452
Author: Hayt
Publisher: Mcgraw Hill Publishers
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Chapter 12, Problem 40E
Circuit values for Fig. 12.40 are 
, 
, 
, 
, 
. Find the reading for each wattmeter.
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Consider the balanced 3-phase circuit shown below
(a) Sketch the single phase equivalent circuit. Show all values on the sketch.
(b) Calculate the following:
the total complex power absorbed by the wye connected load.
the phase current, ICA.
In the figure, the circuit is given as VRS =√3 . 60V and Zy = 6 + j8. Find the value of C to be connected in order to make the power drawn from the system in a phase 1, to make the load current 1, and to make cos(φ) 1.
A balanced, three-phase, positive sequence, with grounded neutral source, supplies power to a balanced wye connected load. For the system, additional information are as follows: Ic = 11.3 cis 112 degrees amps ; and Zcn = 22 cis-16 degrees ohms What is the magnitude of the total apparent of the wye load in va?
Chapter 12 Solutions
Loose Leaf for Engineering Circuit Analysis Format: Loose-leaf
Ch. 12.1 - Let and . Find (a) Vad; (b) Vbc; (c) Vcd.Ch. 12.2 - Prob. 2PCh. 12.2 - Modify Fig. 12.9 by adding a 1.5 resistance to...Ch. 12.3 - A balanced three-phase three-wire system has a...Ch. 12.3 - A balanced three-phase three-wire system has a...Ch. 12.3 - Three balanced Y-connected loads are installed on...Ch. 12.4 - Each phase of a balanced three-phase -connected...Ch. 12.4 - Prob. 8PCh. 12.5 - Determine the wattmeter reading in Fig. 12.24,...Ch. 12.5 - Prob. 10P
Ch. 12 - Prob. 1ECh. 12 - Prob. 2ECh. 12 - Prob. 3ECh. 12 - Describe what is meant by a polyphase source,...Ch. 12 - Prob. 5ECh. 12 - Prob. 6ECh. 12 - Prob. 7ECh. 12 - Prob. 8ECh. 12 - Prob. 9ECh. 12 - Prob. 10ECh. 12 - The single-phase three-wire system of Fig. 12.31...Ch. 12 - Prob. 12ECh. 12 - Referring to the balanced load represented in Fig....Ch. 12 - Prob. 14ECh. 12 - Prob. 15ECh. 12 - Consider a simple positive phase sequence,...Ch. 12 - Assume the system shown in Fig. 12.34 is balanced,...Ch. 12 - Repeat Exercise 17 with Rw = 10 , and verify your...Ch. 12 - Prob. 19ECh. 12 - Prob. 20ECh. 12 - Prob. 21ECh. 12 - Prob. 22ECh. 12 - A three-phase system is constructed from a...Ch. 12 - Prob. 24ECh. 12 - Each load in the circuit of Fig. 12.34 is composed...Ch. 12 - Prob. 26ECh. 12 - Prob. 27ECh. 12 - A three-phase load is to be powered by a...Ch. 12 - For the two situations described in Exercise 28,...Ch. 12 - Prob. 30ECh. 12 - Prob. 31ECh. 12 - Prob. 32ECh. 12 - Repeat Exercise 32 if Rw = 1 . Verify your...Ch. 12 - Prob. 34ECh. 12 - Prob. 35ECh. 12 - Prob. 36ECh. 12 - A wattmeter is connected into the circuit of Fig....Ch. 12 - Find the reading of the wattmeter connected in the...Ch. 12 - (a) Find both wattmeter readings in Fig. 12.39 if...Ch. 12 - Circuit values for Fig. 12.40 are , , , , . Find...Ch. 12 - Prob. 41ECh. 12 - Prob. 42ECh. 12 - (a) Is the load represented in Fig. 12.41...Ch. 12 - Prob. 44E
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- A minimum of three wattemer should be used to measure power for a three phase balanced system. True Falsearrow_forwardin a balanced, 3 phase, positive sequence, grounded neutral source, supplies power to a balanced wye connected load. with the following conditions: Ibc = 9.0 cis 237 degrees amps; and true power per phase is = 343 watts, with 0.55 power factor lagging What is the value of the reactance per phase of the delta load in ohms? (Place negative sign for capacitive reactance.)arrow_forwardA balanced, three-phase, positive sequence, with grounded neutral source, supplies power to a balanced delta connected load. For the system, additional information are as follows: Vbc = 443 cis 191 degrees volts; and Ic = 10.5 cis99 degrees amperes What is the value of the total real power of the delta load in watts? ANSWER QUICKLY NO DIAGRM NEEDEDarrow_forward
- The 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_forwardin a balanced, 3 phase, positive sequence, grounded neutral source, supplies power to a balanced wye connected load. with the following conditions: Van = 350 cis -17 degrees volts; and Zbn = 178 cis43 degrees ohms the watt-meters are placed in lines b and c, what is the reading of the watt-meter in line c in watts? QUICKLYarrow_forwardTwo wattmeter’s are connected to measure the input power of a balanced three phase load by two wattmeter method. If the wattmeter readings are W1 = 9200 W and W2= 3100 W and the reverse switch being operated on the meter indicating 3100 W, then the load power factor is given by,arrow_forward
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