问题:电能表的用途是用来测量(),摇表的用途是用来测量()...
Monday, January 1, 2024
问题:测量电机的绝缘电阻时,摇表()端接被测设备的外壳,()端接被测设备的导线或绕组一端。...
Monday, December 18, 2023
问题:对触电者实施脱离低压电源的主要方法有哪些?应注意什么?...
Monday, February 26, 2024
Thursday, February 15, 2024
Monday, December 18, 2023
Monday, February 26, 2024
Tuesday, January 30, 2024
问题:工作票签发人和工作负责人,对有()、施工复杂易发生()的工作,应增设专责监护人和确定被监护人员。...
Monday, February 26, 2024
Tuesday, January 30, 2024
问题:灯泡A的标称值为"220v100w",灯泡B的标称值为"220v25w",若将它们串联在220v电压上,求灯A和灯B实际消耗的功率分别是多少?...
Monday, December 18, 2023
问题:测量绝缘电阻时,影响准确性的因素有()、()和绝缘表面的脏污程度。...
Monday, February 26, 2024
Tuesday, January 30, 2024
问题:电路中任意两点间的 电位差叫电压。我国电力系统向用户供电提供的电压,低压单相制为220V,三相制为()V。...
Monday, February 26, 2024
Monday, December 18, 2023
Tuesday, January 30, 2024
问题:熔断器的主要作用是保护电气装置免受过负荷电流和()的损害。...
Thursday, February 15, 2024
问题:线损(指我们常规说的电能损失)有哪些环节?降损有哪些措施?...
Monday, January 1, 2024
Monday, February 26, 2024
问题:摇表在摇测前均应进行一次开路和短路检查试验,如何进行开路和短路检查试验?...
Monday, February 26, 2024
问题:所谓三相对称绕组,是指各相绕组结构()都相同,且绕组空间互有120°()的三相绕组。...
Monday, September 4, 2023