An induction motor producing 10 hp is connected to a three-phase, 240 Volt, 60 Hz power line. The stator windings are connected in a wye configuration. The synchronous speed is 1800 rpm . The motor full-load speed is 1740 rpm . The motor power factor is 0.70 . The energy efficiency is
80%
. What is the slip percentage?
3.3%
3.4%
20%
30%