What is a fuse what is its function?
The fuse breaks the circuit if a fault in an appliance causes too much current to flow. This protects the wiring and the appliance if something goes wrong. The fuse contains a piece of wire that melts easily. If the current going through the fuse is too great, the wire heats up until it melts and breaks the circuit.
What is electric fuse class 10th?
Electric fuse is a small piece of wire of a material having low melting point and high resistance. The device protects the circuit from overloading and short circuiting. A fuse wire is made of pure tin or of an alloy of copper and tin.
What is an electric fuse Class 7?
A fuse is a safety device which limits current in circuit as a result it prevents damages to electrical circuits and possible fires. Fuses used in electrical appliances.
What is the function of a fuse in a circuit?
Function of Fuse. In the field of electrical engineering, a fuse is a device that provides over-current protection to the functional electrical circuit. Here, we have listed a few major functions of the fuse. Acts as a barrier between the electric circuit and the human body; Prevents device failure due to faulty circuit operation
What happens when a fuse is connected in series?
A fuse is always connected between the ends of the terminal in a series connection with the circuit. When an excessive current flows in the circuit, it generates heat in the circuit which leads to melt the fuse due to its low melting point, and it also opens the circuit.
What are the advantages and disadvantages of an electrical fuse?
Advantages of an Electrical Fuse. It is the cheapest form of protection, and it does need any maintenance. Its operation is completely automatic and requires less time as compared to circuit breakers. The smaller sizes of fuse element impose a current limiting effect under short-circuit conditions.
What are the time and current characteristics of fuses?
The time and current operating characteristics of fuses are chosen to provide adequate protection without needless interruption. Wiring regulations usually define a maximum fuse current rating for particular circuits. Short circuits, overloading, mismatched loads, or device failure are the prime or some of the reasons for fuse operation.