Which of the following correctly applies to three-phase motors?

Three-phase motors can be configured in two primary ways: delta (Δ) connection and wye (Y) connection. Each configuration has distinct characteristics that can influence the performance and application of the motor. Delta connection typically provides higher starting torque and is often used for high-power applications, while wye connection is useful for lower starting currents and a more balanced load distribution.

The versatility of these configurations allows three-phase motors to be utilized in various industrial and commercial applications where efficiency and reliability are crucial. This is in contrast to the other options, which either restrict the application of three-phase motors or incorrectly state their operational requirements. For example, three-phase motors are not exclusively used in residential settings; they are primarily employed in industrial settings due to their efficiency and power capabilities. Additionally, they do not require a start capacitor as single-phase motors do because they can start and run on three-phase power without additional components.