Single-phase generator The early generators for those single-phase traction networks are single-phase generators. Even with newer three-phase motors which were introduced to some modern trains, the single-phases transmission for traction networks survive their time and are still in use in many railways today. However, many traction power stations have replaced their generators over time to use three-phase generators and convert into single-phase for transmission. In the early development of hydroelectricity, single-phase generators played an important role in demonstrating the benefits of alternating current. In 1891, a 3,000 volts and 133 Hz single-phase generator of 100 horsepower was installed at Ames Hydroelectric Generating
Issues affecting the single transferable vote number of electors in each electorate fall outside the nominated tolerance level. Municipal electoral reviews are undertaken every second term of office. PR-STV differs from other PR systems in that it allows the voter to decide the issues that should matter for him or her. In most PR systems, the voter can only influence a single aspect - party representation. STV allows the voter to choose other criteria that can be used to create the proportionality: the voters' assessment of his or her preferences for the candidates is most importantly based on the voters' expectations of how the candidate would