Question

A motor has synchronous speed of \(1000\ \text{rpm}\) and runs at \(950\ \text{rpm}\). If the torque at this slip is \(10\ \text{Nm}\). What is the torque if the slip is doubled? (assume low slip region)

• A. \(5\ \text{Nm}\)
• B. \(10\ \text{Nm}\)
• C. \(20\ \text{Nm}\)
• D. \(40\ \text{Nm}\)

Hint:

In the low slip region of an induction motor, torque is directly proportional to slip.

Answer 1

The Correct Option is C