Friday, September 16, 2022
Wednesday, February 14, 2024
问题:产品工艺和操作规程,是生产技术实践的总结,也是保证产品质量的()...
Friday, September 16, 2022
问题:三相异步电动机的机械功率,电磁功率和输出功率的关系为()。A、机械功率电磁功率输出功率B、电磁功率机械功率输出功率C、输出功率电磁功率机械功率D、电磁功率输出功率机械功率...
Thursday, September 14, 2023
问题:在电动机切断电源后,采取一定的措施,使电动机迅速停车,称为()。...
Friday, September 16, 2022
问题:直流牵引电机换向器套筒内孔与电枢轴通常采用()配合。...
Saturday, April 13, 2024
Friday, January 13, 2023
问题:真空压力浸漆设备中贮漆罐上应装有搅拌器,其作用主要是使绝缘漆的()比较均匀。...
Wednesday, February 14, 2024
问题:直流电机运行在电动机状态时,其()A、EaUB、Ea=0C、EaD.Ea=U...
Saturday, January 13, 2024
Friday, January 13, 2023
问题:直流电动机主磁极气隙的大小将直接影响电机的()。...
Friday, September 29, 2023
Tuesday, December 26, 2023
问题:一台电动机的电枢电压为220V,额定电流为40A,电枢回路电阻为...
Tuesday, September 13, 2022
Saturday, November 18, 2023
Friday, September 16, 2022
问题:韶山型电力机车所用异步劈相机相当于一台()的组合。...
Tuesday, September 13, 2022
Tuesday, September 13, 2022
问题:接地的特征是能在槽底或槽口处看到明显的烧伤现象。...
Sunday, September 11, 2022
问题:将电动机储存的能量以热能的形式消耗掉,来达到停车的目的的制动方法为()。A、反接制动B、能耗制动C、回馈制动D、机械制动...
Thursday, December 8, 2022
问题:真空压力浸漆设备的额定电压为()。A、36V以下B、110VC、220VD、380V...
Wednesday, September 13, 2023