问题:反击式水轮发电机组停机时机械和电气制动装置都不能使用,则()A、事故停机B、重新开启机组C、自由制动D、允许机组在低转速下继续运转
Monday, January 30, 2023
Wednesday, July 12, 2023
Monday, January 29, 2024
问题:同步发电机的运行特性,一般指空载特性、短路特性、负载特性, 调整特性负载特性、外特性。
Friday, February 23, 2024
Sunday, September 11, 2022
Sunday, September 11, 2022
问题:水轮发电机状态有()A、运行B、热备用C、冷备用D、检修
Tuesday, May 9, 2023
Sunday, March 26, 2023
问题:用来分离压缩空气中所含的油分和水分,使压缩空气得到初步净化的设备叫油水(汽水)分离器
Sunday, September 11, 2022
Sunday, March 26, 2023
Sunday, September 11, 2022
Sunday, September 11, 2022
问题:在R-L-C串联电路中,发生谐振时()最大,()最小。
Sunday, September 11, 2022
Sunday, September 11, 2022
Friday, February 2, 2024
问题:主变差动与瓦斯保护的作用有哪些区别?如变压器内部故障时两种保护是否都能反映出来?
Sunday, December 17, 2023
问题:装接地线时必须先接(),后接(),拆除时正好相反,操作时必须使用()和()。
Wednesday, July 5, 2023
问题:发电机短路特性是指发电机在额定转速下,定子三相短路时,定子稳态()电流与()电流之间的关系曲线。
Sunday, December 17, 2023
Sunday, March 26, 2023
Tuesday, November 21, 2023