A motor-generator set used for providing variable frequency a.c supply consists of a three-phase, 12-pole synchronous motor and a 24-pole three-pluse synchronous generator. The motor-gencrator set is fed from a 25Hz, three phase ac supply. An 8-pole, three-pluse indoction motor is elestrically connected to the terminals of the synchrocods gencrator and runs at a slip of 4%. Determine: ( The frequency of the gencrated voltage of the synchronoas generator (il) The induction motor speed (lil) Frequency of the rotor currents.