NEIEP Mechanics Practice Exam

What is a reconnectable dual-voltage motor?

1. A motor that can operate at high speed

2. A motor that can be connected to run on different voltages

3. A motor that requires no maintenance

4. A motor that is used in single-phase systems

The correct answer is: A motor that can be connected to run on different voltages

A reconnectable dual-voltage motor is designed to operate at two different voltage levels, giving it the flexibility to be connected to different power supply systems. This feature allows the motor to be configured for either of the two specified voltages, which is particularly useful in applications where the available voltage may vary or when the motor needs to be used in different geographical areas with different electrical standards. The ability to reconnect the motor for different voltage configurations is beneficial for manufacturers and users, as it reduces the inventory of motors needed for different applications, simplifies the design of electrical systems, and enhances the adaptability of equipment to varying electrical supply conditions. This flexibility distinguishes it from other types of motors that may only run at a single voltage or have other specific operational characteristics. The other options focus on aspects such as speed, maintenance requirements, or application contexts that do not pertain to the essential feature of dual-voltage operation.