题目内容
三相全控桥整流电路,带阻感(电感足够大)负载工作,变压器副边相电压有效值=200V,触发角a=60°,电阻R=10Ω,流过晶闸管的电流平均值为()
2021-01-27
A.A.7.8
B.11.7
C.13.5
D.16.5
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