In the motor disclosed, five stator windings are distributed on u groups each having five main poles and coacts with a permanent magnet rotor. Each pole has n+1 pole teeth. The stator windings are connected in series or parallel to form five connecting points. A control switches five switches having an armature connected to a connecting point between a positive and negative potential so as simultaneously to energize the windings as required. The control then shifts the short-circuited condition to other windings in cyclical sequence while energizing the remaining four windings at any time. The pole divisions exhibit the relationshipsT.sub.P = nT.sub.S +.alpha.; .alpha.=T.sub.S (K+ 0.6).tau..sub.p ' = nT.sub.S +.beta. ; .beta.=T.sub.S (K'+0.6)the ratio of the rotor tooth widths to stator tooth widths at the outer diameter of the rotor is equal or smaller than unity. The number of rotor teeth Z.sub.R = u (5n+4K+K'+3). In this relation n, K, and K' are whole numbers and T.sub.P, T.sub.P ' and T.sub.S are pitches of adjacent main poles on adjacent groups and of adjacent pole teeth. The angles .alpha. and .beta. are pitches between adjacent teeth on adjacent poles and adjacent groups. The control means connect the windings so as to permit operation in one of five stepping angle modes and in a five phase or two phase mode.