[amp_mcq option1=”Horn gaps” option2=”Thermal overload relays” option3=”Breather” option4=”Conservator” correct=”option1″]<\/p>\n
The correct answer is A. Horn gaps.<\/p>\n
A horn gap is a type of surge arrestor that is used to protect electrical equipment from high voltage surges due to lightning and switching. It consists of two metal horns that are separated by a small gap. When a high voltage surge occurs, the electric field between the horns causes a spark that bridges the gap. This spark discharges the surge and protects the equipment.<\/p>\n
Thermal overload relays are used to protect electrical equipment from overheating. They work by detecting the temperature of the equipment and opening the circuit if the temperature gets too high.<\/p>\n
Breathers are used to prevent the build-up of pressure inside electrical equipment. They allow air to flow in and out of the equipment, preventing the pressure from becoming too high.<\/p>\n
Conservators are used to absorb oil that leaks from electrical equipment. They contain a filter that traps the oil, preventing it from contaminating the environment.<\/p>\n
Here is a diagram of a horn gap:<\/p>\n
The two metal horns are connected to the electrical equipment that is being protected. The gap between the horns is filled with a gas, such as air or sulfur hexafluoride. When a high voltage surge occurs, the electric field between the horns causes a spark that bridges the gap. This spark discharges the surge and protects the equipment.<\/p>\n","protected":false},"excerpt":{"rendered":"
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