单相半波可控整流电路，带纯电阻负载，变压器副边相电压有效值=200V，触发角a为60°，输出直流电压平均值为（）V.

试卷相关题目

SQL Error: select id,body,options from ***_enewstiku where sourceid='32681' and id < 2599631 and id<>'2599631' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku where sourceid='32681' and id > 2599631 and id<>'2599631' order by id asc limit 5