问题:井下摇测接地电阻必须使用ZC—8型接地电阻测试仪。...
Friday, September 16, 2022
问题:摩擦轮传动,主要适用于高速,小功率的传动场合。()...
Friday, September 16, 2022
问题:平面型二极管PN结面积较小时,可用于脉冲数字电路,PN结面积较大...
Thursday, September 15, 2022
Thursday, September 15, 2022
Thursday, September 15, 2022
Thursday, September 15, 2022
Thursday, September 15, 2022
Thursday, September 15, 2022
问题:设某一电容器任一极板上的电量为4e,两极间的电压为2V,则其电容...
Thursday, September 15, 2022
Sunday, September 11, 2022
问题:固定电气设备引出线的终端线头应用()或过渡接头接线。...
Thursday, September 15, 2022
问题:事故的处理分为:事故设备的处理,事故责任的处理。...
Monday, September 12, 2022
问题:故障诊断技术是一门综合性科学,涉及多方面的知识和技术。...
Thursday, September 15, 2022
Monday, September 12, 2022
问题:把交流电一次周期性变化所需时间叫做交流电的()。...
Thursday, September 15, 2022
问题:试验证明温度在()℃范围内金属导体的电阻随温度成正比变化。A、20~80B、25~75C、0~85D、0~100...
Wednesday, March 20, 2024
问题:均匀磁场对载流导体的作用力的通用表达式为F=BILsinQ...
Thursday, September 15, 2022
Monday, September 12, 2022
问题:在对称三相电路中,三相对称负载不论作星形连接,还是三角形连接,三相负载有功功率的计算公式都相同。...
Saturday, August 9, 2025
问题:自同步法的优点是操作简单,并网迅速,缺点是合闸时冲击电流稍大。...
Monday, September 12, 2022