EBK ELECTRICAL TRANSFORMERS AND ROTATIN
4th Edition
ISBN: 9781337025867
Author: Herman
Publisher: VST
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Textbook Question
Chapter 4, Problem 10RQ
A transformer has a turns ratio of 1:6. The primary current is 18 amperes. What is the secondary current?
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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.
Find the value of the currents I1 and 12.
100 ohm
5V
5V
100 ohm
12
O a. 1=-0.3A, 12=-0.1A
O b. 11=0.3A, 12=0.1A
Oc. 11=0.05A, 12=0.1A
O d. 11=0.1A, 12=0.2A
What is the peak voltage of a 120V RMS AC voltage?
Chapter 4 Solutions
EBK ELECTRICAL TRANSFORMERS AND ROTATIN
Ch. 4 - What is a transformer?Ch. 4 - What are common efficiencies for transformers?
Ch. 4 - What is an isolation transformer?Ch. 4 - All values of a transformer are proportional to...Ch. 4 - A transformer has a primary voltage of 480 volts...Ch. 4 - If the secondary of the transformer in question 5...Ch. 4 - Explain the difference between a step-up and a...Ch. 4 - A transformer has a primary voltage of 240 volts...Ch. 4 - A transformer has an output of 750 VA. The primary...Ch. 4 - A transformer has a turns ratio of 1:6. The...
Ch. 4 - Prob. 11RQCh. 4 - Prob. 12RQCh. 4 - Prob. 13RQCh. 4 - The primary leads of a transformer are labeled 1...Ch. 4 - The local utility company must provide service to...Ch. 4 - Refer to Figure 4-79 to answer the following...Ch. 4 - Refer to Figure 4-79 to answer the following...Ch. 4 - Refer to Figure 4-79 to answer the following...Ch. 4 - Refer to Figure 4-79 to answer the following...Ch. 4 - Refer to Figure 4-79 to answer the following...Ch. 4 - Refer to Figure 4-79 to answer the following...Ch. 4 - Prob. 7PCh. 4 - Prob. 8P
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Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, mechanical-engineering and related others by exploring similar questions and additional content below.Similar questions
- Assume 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_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 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_forward
- How much current will flow in the primary of the transformer in question 4?arrow_forwardA load impedance of 52 Ω is connected to the secondary winding of the transformer in question 3. How much current will flow in the secondary?arrow_forwardA transformer has a primary voltage of 240 volts and a secondary voltage of 48 volts. What is the turns ratio of this transformer?arrow_forward
- If 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_forwardA transformer has an output of 750 VA. The primary voltage is 120 V. What is the primary current?arrow_forwardIs the transformer in question 1 a step-up or step-down transformer?arrow_forward
- A 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_forwardAssume that a line voltage of 2400 volts is connected to the primary of the three-phase transformer and the line voltage of the secondary is 240 volts. What is the turns ratio of the transformer?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_forward
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