题目内容
三相半波可控整流电路,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=5Ω,那么流过任一晶闸管的直流电流平均值为()
2021-01-27
A.A.7.8
B.11.7
C.13.5
D.20.3
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