Electrical Transformers and Rotating Machines
4th Edition
ISBN: 9781305494817
Author: Stephen L. Herman
Publisher: Cengage Learning
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Textbook Question
Chapter 7, Problem 6RQ
A delta connection has 30 A of current flowing through each phase winding. How much current is flowing through each of the lines supplying power to the load?
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Chapter 7 Solutions
Electrical Transformers and Rotating Machines
Ch. 7 - Prob. 1RQCh. 7 - Prob. 2RQCh. 7 - A wye-connected load has a voltage of 480 V...Ch. 7 - A wye-connected load has a phase current of 25 A....Ch. 7 - Prob. 5RQCh. 7 - A delta connection has 30 A of current flowing...Ch. 7 - A three-phase load has a phase voltage of 240 V...Ch. 7 - If the load in question 7 is connected in a wye,...Ch. 7 - An alternator with a line voltage of 2400 V...Ch. 7 - Prob. 10RQ
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- A current transformer has a ratio of 600:5. If three loops of wire are wound through the transformer core, how much primary current is required to produce 5 amperes of current in the secondary winding?arrow_forwardIf a single-phase load is connected across the two line conductors and neutral of the transformer in question #2, and one line has a current of 80 amps and the other line has a current of 68 amps, how much current is flowing in the neutral conductor?arrow_forwardAssume that a primary current of 75 amperes flows through the windings of the transformer in question 4. How much current will flow in the secondary winding?arrow_forward
- How much current is flowing in the primary winding?arrow_forwardA current transformer has 4 turns of wire in its primary winding. How many turns of wire are needed in the secondary winding to produce a current of 2 amperes when a current of 60 amperes flows in the primary winding?arrow_forwardA CT has a current flow of 80 amperes in its primary winding and a current of 2 amperes in its secondary winding. What is the ratio of the CT?arrow_forward
- How much current is flowing in the secondary winding?arrow_forwardIf the secondary of the transformer in question 5 supplies a current of 9.6 amperes to a load, what is the primary current? (Disregard excitation current.)arrow_forwardA wye-connected load has a phase current of 25 A. How much current is flowing through the lines supplying the load?arrow_forward
- How much current will flow in the primary of the transformer in question 4?arrow_forwardRefer to the transformer shown in Figure 5-13 to answer the following questions. What is the turns ratio of the winding between points B and E as compared to the winding between points D and E? Figure 5-13 Autotransformer practice problems.arrow_forwardIf the load in question 7 is connected in a wye, what would be the line voltage and line current supplying the load?arrow_forward
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