In a delta-connected source driving a delta-connected load, what is true about the voltages?

In a delta-connected source driving a delta-connected load, what is true about the voltages?

• A. Load voltage is greater than line voltage
• B. Load voltage, line voltage, and source phase voltage are all equal for a given phase
• C. Only load and line voltages are equal
• D. There is always a phase shift between voltages

Answer: (B)

In a delta-connected source driving a delta-connected load, the voltages across the load are indeed related to the source voltages in a specific way. For a delta connection, the line voltage, which is the voltage measured between any two lines, is equal to the phase voltage, which is the voltage across each load or source in a given phase. Therefore, in a perfectly balanced system, the load voltage, line voltage, and the source phase voltage for a given phase are all equal. This equality exists because in delta configurations, each phase of the load directly connects across the line voltage, translating to no difference in voltage levels between these different aspects of the circuit. As a result, when analyzing the voltages in such a configuration, it is clear that they maintain the same magnitude, ensuring that the system functions efficiently. This notion of equality is critical in understanding how delta connections operate and helps in circuit analysis and design, providing insight into the relationships and balances in a three-phase system.

In a delta-connected source driving a delta-connected load, the voltages across the load are indeed related to the source voltages in a specific way. For a delta connection, the line voltage, which is the voltage measured between any two lines, is equal to the phase voltage, which is the voltage across each load or source in a given phase. Therefore, in a perfectly balanced system, the load voltage, line voltage, and the source phase voltage for a given phase are all equal.

This equality exists because in delta configurations, each phase of the load directly connects across the line voltage, translating to no difference in voltage levels between these different aspects of the circuit. As a result, when analyzing the voltages in such a configuration, it is clear that they maintain the same magnitude, ensuring that the system functions efficiently.

This notion of equality is critical in understanding how delta connections operate and helps in circuit analysis and design, providing insight into the relationships and balances in a three-phase system.