Torque in induction motor is directly proportional to

Combining all these factors together we get the equation of torque as- Where, T is the torque produced by induction motor ,. The maximum torque is directly proportional to square of rotor induced emf at the standstill. The induction motor torque varies from zero to full load torque as the slip varies. The slip varies from zero to one.

It is zero at no load and one at standstill.

From the curve it is seen that the torque is directly proportional to the slip.

That is, more is the slip, more will be the torque produced and vice-versa.

Construction of Squirrel Cage Induction Motor The three phase induction motor is by far the most c. Torque Equation of Three Phase Induction Motor The equation for rotor current and torque in terms if rotor quantities and slip is and maximum torque . The above equation expresses the developed torque directly in terms of the air gap power Pg and the synchronous speed ωs. Hence, it is clear from the above equation that the starting torque is proportional to the square of the stator applied voltage. In case of the induction motors the torque is (a) inversely proportional to (Vslip) (b) directly proportional to (slip)(c) inversely . Directly proportional to the square of the induced emf in rotor b. Any electrical machine is first and foremost thermally limited.

This sets the current limit of the motor. This inturn limits the torque since torque is proportional to the current. Higher the flux, higher the torque because of direct proportion.

Stepless speed control of induction motor is possible by which of the following methods? Test Set - - Electrical Machines - The test carries questions on topics such as Series, Compound - D. It is Ideal for students preparing for semester exams, GATE, IES, . An induction motor when loaded from no load to full loa its slip also varies from s=to s=0. Then the torques in the low slip region and in high slip region is a. Both are directly proportional to the slip b. From the equation (1) shown above, it is clear that the torque is proportional to slip.

At the standstill condition, the torque is inversely proportional to the slip. The rotor current is directly proportional to the induced emf. SLIP-IN- INDUCTION - MOTOR -EQ-7.

The torque is directly proportional to the rotor current.