3 3 4 In analyzing a hydropower site, it is found that the turbines should turn at close to 350 r/min. If the directly coupled genera- tors must generate a frequency of 60 Hz, calculate the following: a. The number of poles on the rotor b. The exact turbine speed An isolated 3-phase generator produces a no-load line voltage of 13.2 kV. If a load having a lagging power factor of 0.8 is connected to the machine, must the excita- tion be increased or decreased in order to maintain the same line voltage?