If the impedance of each of the three lines connecting the motor of Prob. 1.16 to a bus is 03 + j1.0Ω, find the line-to-line voltage at the bus which supplies 440 V at the motor.

Prob. 1.16

Determine the current drawn from a three-phase 440-V line by a three-phase 15-hp motor operating at full load, 90% efficiency, and 80% power-factor lagging. Find the values of P and Q drawn from the line.