Which statement about a 12-lead motor is true?

Which statement about a 12-lead motor is true?

• A. It is a dual-voltage motor that can be reconfigured between wye and delta, with four leads per phase.
• B. It is a fixed-configuration motor with three leads per phase.
• C. It cannot be used with different starting methods.
• D. It has six leads total.

Answer: (A)

A 12-lead motor is designed to be dual-voltage and reconfigurable because each phase is built from two identical windings, giving four leads per phase (twelve leads total). Those extra leads let the windings be connected in different ways: for the low-voltage option the two windings in a phase can be connected in parallel, and for the high-voltage option they can be connected in series. With the appropriate interconnections, you can arrange the windings to form a wye or a delta configuration, providing flexibility to match different supply voltages and starting requirements. This is why a 12-lead motor is described as dual-voltage with four leads per phase. The other statements don’t fit because a 12-lead motor isn’t limited to a fixed three-lead or six-lead arrangement, and it can accommodate various starting methods depending on how the windings are interconnected.

A 12-lead motor is designed to be dual-voltage and reconfigurable because each phase is built from two identical windings, giving four leads per phase (twelve leads total). Those extra leads let the windings be connected in different ways: for the low-voltage option the two windings in a phase can be connected in parallel, and for the high-voltage option they can be connected in series. With the appropriate interconnections, you can arrange the windings to form a wye or a delta configuration, providing flexibility to match different supply voltages and starting requirements. This is why a 12-lead motor is described as dual-voltage with four leads per phase.

The other statements don’t fit because a 12-lead motor isn’t limited to a fixed three-lead or six-lead arrangement, and it can accommodate various starting methods depending on how the windings are interconnected.