"电气控制技术模拟试卷及答案精编总结"

电路的元器件包括触发器、开关、中间继电器、热继电器、熔断器等，它们在控制系统中起着重要的作用。在电气控制技术中，低压电器是指在DC1500V以下或AC1200V以下工作的电器设备，根据控制对象的不同可以分为交流接触器和直流接触器。交流接触器通常由触头系统、励磁装置和螺纹杆、以及其他局部组成，它常用于零压保护和过热保护。中间继电器在电路中的作用是将控制信号传递给执行元件，热继电器常用于电动机过载保护，而熔断器则用于保护线路免受过载和短路的损害。 时间继电器按照延时的方式可以分为延时闭合、延时打开和带瞬动触点的通电或断电延时型继电器等，相应的时间继电器延时触点又分为延时闭合常开触点、延时打开常开触点、常闭延时闭合触点和常开延时打开触点。这些时间继电器在控制系统中起着精确控制时间的作用，确保系统运行的顺畅和安全。 电气控制技术的主要构成包括触发器、开关、继电器、熔断器等元器件，它们通过相互配合，实现对电气设备的控制和保护。通过对这些元器件的了解，并结合实际的控制系统设计和运行，可以实现高效、可靠的电气控制，确保设备的正常运行和人员的安全。Electric control technology simulation paper with answers..doc;Electric control technology simulation paper with answers..doc-?Electric control technology?Simulation paper 1I. Fill in the blanks: [6 questions in total, 1 point per blank, 19 points in total]1. Low-voltage electrical appliances generally refer to electrical equipment that operates at DC1500V or below or AC1200V or below. Suppose that according to the different control objects, they can be divided into and.2. An AC contactor is structurally composed of a contact system, ____________, and ________, and other parts. It is usually used for zero-pressure protection and ______________ protection.3. The role of the intermediate relay in the circuit is ______________________; the role of the thermal relay in the circuit is ________________________, and the role of the fuse in the control circuit is _______________.4. Time relays can be divided into, and time delay relays with instantaneous contacts for energization [or de-energization], and the corresponding time relay delay contacts are delayed open normally open contacts, and delayed to break normally open contacts, four categories.5. Usually constitute electrical control; "。。