Answer the following questions
1. Define the following. (2 points)
a. Lightning
b. Earthing
Answers
Answer:
Lightning-A bright flash of light that appears in the sky during a strom, and is usually followed by thunder.
Earthing-
An earthing system (UK) or grounding system (US) connects specific parts of an electric power system with the ground, typically the Earth's conductive surface, for safety and functional purposes.[1] The choice of earthing system can affect the safety and electromagnetic compatibility of the installation. Regulations for earthing systems vary considerably among countries, though most follow the recommendations of the International Electrotechnical Commission. Regulations may identify special cases for earthing in mines, in patient care areas, or in hazardous areas of industrial plants.
In addition to electric power systems, other systems may require grounding for safety or function. Tall structures may have lightning rods as part of a system to protect them from lightning strikes. Telegraph lines may use the Earth as one conductor of a circuit, saving the cost of installation of a return wire over a long circuit. Radio antennas may require particular grounding for operation, as well as to control static electricity and provide lightning protection.
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Objectives of electrical earthing
Low-voltage systems
High-voltage systems
Grounding rods
Grounding connectors
Soil resistance
See also
References
Last edited 14 days ago by 109.165.144.118
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Answer:
The occurrence of a natural electrical discharge of very short duration and high voltage between a cloud and the ground or within a cloud, accompanied by a bright flash and typically also thunder is known as lightning....
The process of transferring the immediate discharge of the electrical energy directly to the earth by the help of the low resistance wire is known as the electrical earthing. ... Mostly, the galvanised iron is used for the earthing. The earthing provides the simple path to the leakage current.....