单项选择题
Generator brushes are staggered to（）
A.reduce current pulsations B.reduce brush chatter C.prevent uneven commutator wear D.allow greater power generation
单项选择题 The voltage output of an AC generator is controlled by（）
单项选择题 If two AC generators are operated in parallel, the load is distributed evenly by（）
单项选择题 What would the amps be at 240 volts with an 8 ohm resistance?（）
