Parts-Syllabus Part B EM203 Commercial Engineering , Robotics and Alternative Energy Induction Motor Induction Motor Synchronous speed of motor Ns=120×fPn N_{s} = \frac{120\times f} {P_{n}} Ns=Pn120×fwhere Ns = speed in (rpm) f = frequecy of current supplied. P = number of poles Nslip=Nsync−Nmech N_{slip} = N_{sync}- N_{mech} Nslip=Nsync−Nmech HydraulicsInnovative Measures to Reduce EEDI