1. The insulation resistance of the generator rotor winding and the insulation resistance of the equipment connected to the generator excitation circuit are generally greater than 0.5 megohms.
2. Resistance is usually directly called resistance in daily life. This is a current limiting component. Once a resistor is connected in a circuit, the resistance of the resistor is fixed, usually with two pins. It can limit the current circulating in the branch to which it is connected. A resistor whose resistance value cannot be changed is called fixed resistance. Those with variable resistance are called potentiometers or variable resistors. An ideal resistor is linear, that is, the instantaneous current flowing through the resistor is proportional to the instantaneous voltage applied. Variable resistor to divide the voltage. On the exposed resistance body, one or two contamovable metal cts are firmly pressed. The position of the contact determines the resistance between either end of the resistor and the contact.
3. Generators are mechanical devices that convert other forms of energy into electrical energy. They are driven by water turbines, steam turbines, diesel engines or other electrical machines to burn water, air. , and fuel. Or the energy generated by nuclear fission is converted into mechanical energy and transmitted to the generator, which is then converted into electrical energy. Generators are widely used in industrial and agricultural production, national defense, science and technology and daily life.