A 3-phase slip-ring induction motor with star-connected rotor has an induced e.m.f. of 173 V between slip-rings at standstill with normal voltage applied to the stator. The resistance per phase of rotor winding is 0.5 ohm and standstill leakage reactance per phase is 1 ohm. The rotor current/phase when running short-circuited with 5 percent slip will approximately be