General Knowledge - Basic General Knowledge - Discussion
Discussion Forum : Basic General Knowledge - Section 1 (Q.No. 49)
49.
For safety, the fuse wire used in the mains for household supply of electricity must be made of metal having
Discussion:
34 comments Page 3 of 4.
Sajin Vineeth said:
1 decade ago
Tinned copper and other low melting wire used in fuse is it right ?
Rajesh said:
1 decade ago
A fuse wire must have high resistance and low melting point.
Kritika said:
1 decade ago
Yes low melting point is the answer so as to prevent a short circuit from materializing because if a high current passes through it, it would melt and thus break the circuit.
Sreehari said:
1 decade ago
Low melting point is the answer. Because fuse wire should be broken when an excess current flows through it. (according to H=I^2*R*T ).
Malli said:
1 decade ago
Because the wire has to melt when sudden variation in the current/voltage, otherwise it may damage electric instruments inside the house. By melting it avoid a damage to the other instruments hence need to have low melting point fuse wire.
Ritesh kumar said:
1 decade ago
If the melting point of fuse wire will be more, then it will take more time to disconnect the supply system at the time of fault occurred and the electronic components will be get damaged.
So melting point must be low for fuse wire.
So melting point must be low for fuse wire.
Yashfeen said:
1 decade ago
The fuse wire must be of low melting point. When excess current is flowed the fuse wire melt up and electrical appliances are saved.
Sangamesh said:
1 decade ago
Basic idea is to protect household devices. So that only that fuse will spoil due to high current rest house devices get protected. Because fuse cost is less. It can be replaced as it's cost is low compared to costly house hold circuit devices.
Sanjeev said:
1 decade ago
So both A and B are right
RAJEHWAR JOSHI said:
1 decade ago
A fusible alloy is a metal alloy capable of being easily fused, i.e. easily meltable, at relatively low temperatures. Fusible alloys are commonly, not necessarily, eutectic alloys.
Sometimes the term "fusible alloy" is used to describe alloys with a melting point below 150 degree C (302 degree F). Fusible alloys in this sense are used for solder.
Sometimes the term "fusible alloy" is used to describe alloys with a melting point below 150 degree C (302 degree F). Fusible alloys in this sense are used for solder.
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