Outline three applications of autotransformers?

1. Voltage regulation: Autotransformers can be used to regulate voltage levels in electrical systems. By adjusting the tap settings on the autotransformer, the output voltage can be increased or decreased as needed to maintain a stable voltage supply.

2. Motor starting: Autotransformers are commonly used in motor starting applications to reduce the inrush current and voltage drop during motor start-up. By using an autotransformer to initially supply a reduced voltage to the motor, the starting current can be limited, reducing stress on the motor and the electrical system.

3. Power distribution: Autotransformers are often used in power distribution systems to step up or step down voltage levels for transmission and distribution of electrical power. By using autotransformers at substations and other points in the power grid, voltage levels can be adjusted to meet the requirements of different loads and ensure efficient power distribution.

1. Voltage Regulation:
- Used to adjust the voltage level of a power system or load in a controlled manner.
- Allow for boosting or bucking of voltage to compensate for line losses or variations in load demand.

2. Phase Conversion:
- Convert a three-phase power supply to a single-phase supply or vice versa.
- Used in industrial settings or where a balanced three-phase system is not available.

3. Starter for Induction Motors:
- Used as a starting mechanism for large induction motors.
- Provide a reduced voltage to the motor during startup to limit inrush current and reduce starting torque.
- Once the motor is up to speed, the autotransformer is bypassed and the motor receives full voltage.