Friday, September 16, 2022
Friday, September 16, 2022
在三相四线制中,当采用了漏电保护时,其开关后的零线()进行重复接...
Friday, September 16, 2022
Friday, September 16, 2022
Sunday, September 11, 2022
微分方程算法主要用于输电线路的距离保护中,这种算法(),即可算出...
Sunday, September 11, 2022
Sunday, September 11, 2022
变压器储油柜的作用是给油的热胀冷缩留有缓冲的余地,保持油箱始终充...
Sunday, September 11, 2022
Sunday, September 11, 2022
在电压负反馈调速系统中加入电流正反馈的作用是利用电流的增加,从而...
Sunday, September 11, 2022
Friday, September 16, 2022
反时限过电流保护的动作时间与故障电流的大小有()关系。A、正比B、反比C、直线...
Wednesday, December 6, 2023
阀用电磁铁主要用于金属切削机床中远距离操作各种()、(),以实现...
Sunday, September 11, 2022
直流电动机在额定负载下运行时,其换向火花应不超过()。...
Friday, September 16, 2022
Friday, September 16, 2022
摇测10kV母线的绝缘电阻应选用电压等级()V的兆欧表。...
Sunday, September 11, 2022
WXH(B)-11型微机保护装置采用多单片机并行工作方式,配有(...
Sunday, September 11, 2022
SCR—D拖动方式直流电梯比F—D拖动方式直流电梯节能。...
Friday, September 16, 2022
Sunday, September 11, 2022
国家电网公司员工道德规范要求,在优质服务中,要坚持()、()、(...
Friday, September 16, 2022