a 3-phase induction motor is driving a constant torque load of 1 pu at 5% slip. it has a maximum torque of 2 pu at 10% slip. torque-speed variation...

a 3-phase induction motor is driving a constant torque load of 1 pu at 5% slip. it has a maximum torque of 2 pu at 10% slip. torque-speed variation in stable zone is assumed to be linear. for the stable operation of the motor, the minimum pu supply voltage is approximately