Question

6) When

a three-phase electrical supply is generated, which of the
following are equal?
Phase
currents
Phase
voltages
Phase
winding impedances
All
of the above

Answer 1

In a balanced three-phase electrical supply, all of the following are equal: phase currents, phase voltages, and phase winding impedances. This means consistent voltage and current are delivered from power lines and electrical generators.

Step-by-step explanation:

When a three-phase electrical supply is generated, what are considered equal are the phase voltages and the phase currents, provided that the system is balanced.

This means that the same voltage applies to each phase and the same current flows in each phase. In an ideal three-phase system, the phase winding impedances are also designed to be equal to maintain balance.

Therefore, the correct answer is: All of the above are equal in a properly designed three-phase electrical supply system.

It is important to note that three-phase electrical supply is commonly used for transmitting voltage from power lines for use in homes and businesses due to its efficiency in delivery and the consistent power it provides.

The current from the power lines and the current from the electrical generator are both crucial in this context as they involve the flow of electric charge that powers appliances and equipment.

Answer 2

In a three-phase electrical supply, phase currents, phase voltages, and phase winding impedances are all equal.

Step-by-step explanation:

In a three-phase electrical supply, all of the following are equal: phase currents, phase voltages, and phase winding impedances.

When a three-phase electrical supply is generated, the current flowing through each phase is the same, known as phase currents. The voltages across each phase are also equal, known as phase voltages. Additionally, the winding impedances of the phases are equal.

This equality is due to the nature of a balanced three-phase system, where the three phases are generated with the same amplitude and frequency.