b) What are electric fuses? Write their importance. Name the device used these days
in place of electric fuses in electrical circuits
Answers
Electric fuses are devices used to break a circuit when unduly high electric current passes through it. Nowadays, MCB's are used in place of fuses.
Hope it helps.
Explanation:
Define electric fuse
An electric fuse is a safety device to prevent damage to an electrical circuit when excessive current flows through it. It is made of a special material. As the current increases beyond a limit, the wire in the electric fuse melts and breaks off.
importantance
A fuse(s) is needed in any electrical system (AC or DC). These protection devices react to the amount of heat being produced by electricity passing through wires and/or components. They are used so as to protect wires and components from the extreme heat produced should there be an electrical overload or short circuit.
Name the device..
Name device used these days in place of electric fuses in electrical circuits. Answer: The device used these days in place of electric fuse is MCB (Miniature Circuit Breaker). This is a switch which automatically turns off when current in a circuit exceeds the safe limit.
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