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Refer to Figure I on Worksheet I, to answer numbers 18 through 27 based on the fact that it is a 240/480V, 120/240V, 4 kVA single-phase transformer. AC R1 Figure I AB RE

Refer to Figure I on Worksheet I, to answer numbers 18 through 27 based on the fact that it is a 240/480V, 120/240V, 4 kVA single-phase transformer. AC R1 Figure I AB RE

Introductory Circuit Analysis (13th Edition)
Introductory Circuit Analysis (13th Edition)
13th Edition
ISBN:9780133923605
Author:Robert L. Boylestad
Publisher:Robert L. Boylestad
Chapter1: Introduction
Section: Chapter Questions
Problem 1P: Visit your local library (at school or home) and describe the extent to which it provides literature...
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**Diagram Description: Single-Phase Transformer Connection** The diagram illustrates a single-phase transformer with dual primary and secondary windings. This transformer can be configured for different voltage levels, specifically 240/480V for primary and 120/240V for secondary, with a power rating of 4 kVA. **Primary Side:** - The primary side consists of two windings, labeled H1-H2 and H3-H4. These can be connected in series or parallel to achieve the desired working voltage. - When connected in series, it operates at 480V, and in parallel, it operates at 240V. **Secondary Side:** - The secondary side also has two windings, labeled X1-X2 and X3-X4. - Similar to the primary, these can be connected in series for 240V or in parallel for 120V operation. **Connections:** - Arrows indicate possible connections: A, B, and C denote potential connection points for different configurations. - R1 and R2 resistances are connected to the secondary side, illustrating potential load connections. This diagram represents the versatility and adaptability of transformers in electrical systems, emphasizing their importance in adjusting voltage levels to meet specific requirements.
Transcribed Image Text:**Diagram Description: Single-Phase Transformer Connection** The diagram illustrates a single-phase transformer with dual primary and secondary windings. This transformer can be configured for different voltage levels, specifically 240/480V for primary and 120/240V for secondary, with a power rating of 4 kVA. **Primary Side:** - The primary side consists of two windings, labeled H1-H2 and H3-H4. These can be connected in series or parallel to achieve the desired working voltage. - When connected in series, it operates at 480V, and in parallel, it operates at 240V. **Secondary Side:** - The secondary side also has two windings, labeled X1-X2 and X3-X4. - Similar to the primary, these can be connected in series for 240V or in parallel for 120V operation. **Connections:** - Arrows indicate possible connections: A, B, and C denote potential connection points for different configurations. - R1 and R2 resistances are connected to the secondary side, illustrating potential load connections. This diagram represents the versatility and adaptability of transformers in electrical systems, emphasizing their importance in adjusting voltage levels to meet specific requirements.
**Electrical Worksheet Questions** **23.** What is the total kVA on the secondary side of the transformer in Figure 1, Worksheet 1, if both resistive loads, R1 and R2, are 10 Ω each? a) 9.6 kVA b) 1.44 kVA c) 2.88 kVA d) none of the above **24.** What is the total kVA on the primary side of the transformer in Figure 1, Worksheet 1, if both resistive loads, R1 and R2, are 10 Ω each? Assume the transformer to be 100% efficient. a) 9.6 kVA b) 1.44 kVA c) 2.88 kVA d) none of the above **25.** If resistor R1 is 15 Ω and resistor R2 is 10 Ω in Figure 1, Worksheet 1, what would be the current in: A) line A? a) 0A b) 4A c) 8A d) 12A B) line B? a) 0A b) 4A c) 8A d) 12A C) line C? a) 0A b) 4A c) 8A d) 12A
Transcribed Image Text:**Electrical Worksheet Questions** **23.** What is the total kVA on the secondary side of the transformer in Figure 1, Worksheet 1, if both resistive loads, R1 and R2, are 10 Ω each? a) 9.6 kVA b) 1.44 kVA c) 2.88 kVA d) none of the above **24.** What is the total kVA on the primary side of the transformer in Figure 1, Worksheet 1, if both resistive loads, R1 and R2, are 10 Ω each? Assume the transformer to be 100% efficient. a) 9.6 kVA b) 1.44 kVA c) 2.88 kVA d) none of the above **25.** If resistor R1 is 15 Ω and resistor R2 is 10 Ω in Figure 1, Worksheet 1, what would be the current in: A) line A? a) 0A b) 4A c) 8A d) 12A B) line B? a) 0A b) 4A c) 8A d) 12A C) line C? a) 0A b) 4A c) 8A d) 12A
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