Question

If the starting torque of the motor is less than the load torque, the motor will fail to start.

(a) True

(b) False

This question was posed to me by my college professor while I was bunking the class.

The doubt is from Dynamics in chapter Dynamics of Electrical Drives of Electric Drives

Answer 1

Correct choice is (a) True

The explanation: J×d(w)÷d(t) = Motor torque – Load torque is the dynamic equation of motor. If starting torque (motor torque) is less than the load torque then d(w)÷d(t) <0, acceleration <0 so the motor will decelerate and fails to start.