a certain 25-hp three-phase induction motor operates from a 440-v-rms (line-to- line) three-phase source. the full-load speed is 1750 rpm. the motor has a starting torque equal to 200 percent of its full-load torque when started at rated voltage. for an engi- neering estimate, assume that the starting torque of an induction motor is proportional to the square of the applied voltage. to reduce the starting current of the motor, we decide to start it with a line-to-line voltage of 220 v. estimate the starting torque with this reduced line voltage.