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Q.

Which among these are the main characteristics of fuse elements?


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a

High conductivity

b

low melting point

c

do not burn due to oxidation

d

All of the above 

answer is D.

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Detailed Solution

All the mentioned characteristics are the main characteristics of the fuse elements.
The fuse wires are used in electric circuits to protect home appliances from getting damaged from over-currents. Therefore, fuse wire should be in such a way that it melts immediately when a strong current flows through the circuit. It is only possible if its melting point and the material's resistivity are low. Thus, fuse wire must have all the characteristics like high conductivity and low melting point so it does not burn easily due to oxidation to prevent possible damage.
 
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