What is an advantage of using 115 volt 400 cycle alternating current?

The advantage of using 115 volt 400 cycle alternating current lies in its ability to utilize high voltage alternating current motors, which are designed to be smaller and lighter compared to their lower frequency counterparts. This is primarily due to the reduced size of the motors’ components, such as windings and magnetic cores, which can be designed more compactly when operating at higher frequencies.

Higher frequency alternating current allows for more efficient operation, as the motors can produce the same amount of power in a more compact form. This results in significant weight savings, which is especially beneficial in aviation and transportation applications where every ounce of weight counts. Additionally, the smaller motors often require less material and can be more easily integrated into various systems, potentially leading to reduced installation complexity and easier servicing.

While other options mention aspects such as cost, size, and electricity usage, they do not accurately reflect the specific advantages associated with 115 volt 400 cycle alternating current. The unique advantages of size and weight from using high voltage alternating current motors is the key distinction that supports the correct choice.