Electrical Transformers and Rotating Machines
4th Edition
ISBN: 9781305494817
Author: Stephen L. Herman
Publisher: Cengage Learning
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Question
Chapter 6, Problem 8RQ
To determine
The developed voltage across the secondary terminal.
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A single phase 50 KVA transformer has primary voltage of 6600 v and
secondary voltage of 254 v and has 32 secondary turns. Calculate the
number of primary turns and primary and secondary currents.
1. What will be the output voltage during the positive half cycle of the input voltage?
2. What will be the output voltage during the negative half cycle of the input voltage?
What is the peak voltage of a 120V RMS AC voltage?
Chapter 6 Solutions
Electrical Transformers and Rotating Machines
Ch. 6 - Prob. 1RQCh. 6 - What is the standard current rating for the...Ch. 6 - Why should the secondary winding of a CT never be...Ch. 6 - A current transformer has a ratio of 600:5. If...Ch. 6 - Assume that a primary current of 75 amperes flows...Ch. 6 - What type of core is generally used in the...Ch. 6 - A current transformer has 4 turns of wire in its...Ch. 6 - Prob. 8RQCh. 6 - A CT has a current flow of 80 amperes in its...Ch. 6 - What is the most common use for a CT?
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- An AC power source is connected across 325 turns of an autotransformer, and the load is connected across 260 turns. What is the turns ratio of this transformer?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_forwardA 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_forward
- How many lines of magnetic flux must be cut in 1 s to induce a voltage of 1 V?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_forwardHow many transformers are needed to make an open-delta connection?arrow_forward
- If 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 transformer has a primary voltage of 480 volts and a secondary voltage of 20 volts. What is the turns ratio of the transformer?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
- A wye-connected load has a voltage of 480 V applied to it. What is the voltage dropped across each phase?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_forwardName three factors that determine the amount of induced voltage.arrow_forward
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