A $400$ volt $3$ phase $8$ Pool $50$ Hz star connected induction motor give the following test result no load test line values $400$ volt $10$ ampere power factor $0\mathrm{.}20$ block rotor test line values $160$ volt $30$ ampere power factor $0\mathrm{.}35$ if a full load and rated voltage the power factor is at its maximum then calculate full load current power factor torque in Newton metre speed power output efficiency stator and rotor ohmic losses are equal