What are electrical insulators for overhead power lines? Purpose and scope of existing types of insulators. Product labeling.
What describes Ampere's law, formulas for calculation, its practical significance. Ampere's direction of power. A simple explanation and a brief statement of the law.
The explanation in simple words, what is hysteresis. The use of hysteresis in electrical engineering and electronics. What harm and benefit from this phenomenon.
It is necessary to connect a switch with a lamp in the vestibule from the lighting switch in the corridor so that the lamp control is independent. How to do it?
Please tell me whether the load on the wiring of the house will decrease if you connect electricity to the shed according to the second option (see diagram)?
Zero disappeared in the outlet, there is a phase. The reason is the twisted connection walled into the screed. Can I take to the outlet with phase zero from another outlet?
How to connect a 220 volt battery outlet to power the device. You just need to connect a device for making root dogs to the outlet on the beach.
The purpose of the exhaust fans, their strengths in terms of domestic operation. Aspects of the selection and installation of exhaust fans of various modifications.
The battery charger in the outlet exploded, there is no electricity. Can I turn it on and continue to use the outlet?
Electricians installed an RCD in the panel for each group, but did not install circuit breakers. How to put the machine: before or after the RCD?
Everywhere they put lamps with a GU 5.3 socket. My question is what are usually guided when choosing socles. Is it possible to replace only the plinths in spotlights?
Is it possible for a long time to leave a power supply with an LED in the socket? The 2V power supply is just enough for the LED. I am afraid there will be no closure.
What is automatic frequency unloading and where does it apply. Purpose and principle of action of the AChR. Types of automatic frequency discharge.
What is the Lorentz force and how to determine the direction of this force. Simple explanation of material with formulas. The use of Lorentz force in life.
I want to conduct electricity in the cabins, using an extension cord plugged into an outlet in the house. The distance from the house to the change house is 4 meters. Which extension cord is better to choose?
How to connect the rectifier to the engine brake correctly. Rectifier with one diode, plus and minus output. I tried to connect, but the engine stops.
How is the distribution of charges in the conductor during the flow of current. Power consumption of a solitary conductor. How to apply distribution knowledge in practice.
The wiring is weak, but there are a lot of electrical appliances, I decided to draw a parallel power network to individual devices. Will plugs work when the load is turned on?
What are harmonics in electrical networks and why are they dangerous? Ways to reduce harmonic interference. Negative effects of harmonics.
What is an electric field, what are its characteristics and properties. A simple definition of a concept. How to detect an electric field and where it occurs.
An electrician supplied automatic devices and RCDs of one company. The rated value of the RCD is 32A, while the opening machine is 32A. Is the RCD rating correct or is it necessary to set more?
One LED bulb burned out (there are 5 in total) and now there is no light at all in the room. Changing a burnt bulb to a new one does not give a result. What is the reason?
When the vacuum cleaner or the kettle is turned on, voltage drops in the apartment. At the same time, LED lights shine weaker. What is the problem and its solution?
In the kitchen, bulbs often burn out. We bought energy-saving light bulbs in all rooms, but the bulbs in the kitchen continue to burn out. What is the reason?