A schrage motor can run on

A Schrage motor can run on all of the above: zero slip, negative slip, and positive slip.

• Zero slip occurs when the rotor speed is equal to the synchronous speed. This is the ideal operating condition for a Schrage motor, as it results in the highest efficiency.
• Negative slip occurs when the rotor speed is less than the synchronous speed. This can happen when the motor is overloaded or when the load is too light.
• Positive slip occurs when the rotor speed is greater than the synchronous speed. This can happen when the motor is undervolted or when the load is too heavy.

Schrage motors are a type of induction motor that is used in a variety of applications, including fans, pumps, and compressors. They are known for their high efficiency and their ability to operate on a wide range of voltages.