单选题If two AC generators are operated in parallel, the load is distributed evenly by（）Aa rheostatBa balancing coilCchanging field excitationDadjusting the governor settings
单选题
If two AC generators are operated in parallel, the load is distributed evenly by（）
A
a rheostat
B
a balancing coil
C
changing field excitation
D
adjusting the governor settings
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