Slip is the term which is used to explain the difference between synchronous speed in a magnetic field and shaft rotating speed. The measurement of slip is done via frequency or RPM.

In case of an induction motor, we always have to keep in consideration that in comparison to synchronous speed, the rotor speed should always be less. In other words, slip can be relayed as a fraction of synchronous speed.

When a load is increased, side by side to it, we can also see the value of slip increasing. This results in higher torque provision. Equational formula of slip is,

As per this, the value of slip is very less. When the measurement is performed at full load, the value of slip is near about 3%. But in case of no load, value of slip is seen at 1%.

In cases where the machines are large and highly efficient, at full load, its value of slip is near about 1%.

In accordance with the above stated statement, induction motor, in this case, can be stated as an equipment whose role is similar to that of D.C. shunt motor. The former one works at a considerable constant speed.


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