In a delta-connected source feeding a Y-connected load, what is true about the phase voltages?

In a delta-connected source feeding a Y-connected load, what is true about the phase voltages?

• A. Each phase voltage equals the phase current
• B. Each phase voltage equals the difference of the corresponding load voltages
• C. All phase voltages are equal
• D. Phase voltages are directly proportional to line voltages

Answer: (B)

In a delta-connected source feeding a Y-connected load, the relationship between phase voltages and line voltages is key to understanding the behavior of the circuit. When dealing with a delta connection, the line voltage (voltage across the lines) is equal to the phase voltage (voltage across each phase) due to the nature of how delta connections are configured. In this case, with a Y-connected load, the phase voltages across each load are actually derived from the line voltages of the delta source. Specifically, each phase voltage is proportional to the corresponding line voltage divided by the square root of three, depending on the configuration of the system. While phase voltages in the Y-connected load will equal the line voltages in the delta configuration in terms of magnitude, the interpretation of the answer provided indicates a misunderstanding of the specific relationships derived in complex power systems. The statement regarding "the difference of the corresponding load voltages" refers to the way the measured phase voltages may vary or be different when connecting delta to Y, but in essence, the phase voltages themselves still align with the operational characteristics defined by their connections. The correct statement from the question emphasizes that each phase voltage represents a link between the corresponding voltages in the respective delta

In a delta-connected source feeding a Y-connected load, the relationship between phase voltages and line voltages is key to understanding the behavior of the circuit. When dealing with a delta connection, the line voltage (voltage across the lines) is equal to the phase voltage (voltage across each phase) due to the nature of how delta connections are configured.

In this case, with a Y-connected load, the phase voltages across each load are actually derived from the line voltages of the delta source. Specifically, each phase voltage is proportional to the corresponding line voltage divided by the square root of three, depending on the configuration of the system.

While phase voltages in the Y-connected load will equal the line voltages in the delta configuration in terms of magnitude, the interpretation of the answer provided indicates a misunderstanding of the specific relationships derived in complex power systems. The statement regarding "the difference of the corresponding load voltages" refers to the way the measured phase voltages may vary or be different when connecting delta to Y, but in essence, the phase voltages themselves still align with the operational characteristics defined by their connections.

The correct statement from the question emphasizes that each phase voltage represents a link between the corresponding voltages in the respective delta