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.
Aaishu said:
1 decade ago
Yes, lead is used in fuse because of low melting point & high resistance.
PROSENJIT HALDER said:
10 years ago
A fuse wire always should have high resistance and low melting point.
Samayara said:
9 years ago
I agree @Prosenjit Halder.
The high resistance is correct to tha concept of resistance and current.
The high resistance is correct to tha concept of resistance and current.
Subhra said:
9 years ago
The material should have low melting point and low resistance.
Low resistance because if there is low are then there will be large current and heat produced in fuse material is more dependent on current (I) than resistance.
Low resistance because if there is low are then there will be large current and heat produced in fuse material is more dependent on current (I) than resistance.
Subhra said:
9 years ago
Example. A 50 ohm resistance is connected accros a 100 volt supply, then heat will be is 200 joule in 1 sec. Now the resistance of 20 ohm is connected of same material accros the supply. Now heat will be 500 joule in 1 sec.
ABHI said:
9 years ago
Fuse is connected in series with load so we consider current passing though it.
Imtxn said:
9 years ago
The discussion has been about fuse impedances & melting point. Can we discuss factors affecting fuse operating points?
Anmol (MIT professor) said:
9 years ago
Fuse is a low resistance and melting point sacrificial device.
Sobia said:
8 years ago
The piece of wire which melts due to exceed of current is called __________.
Bulb, Rubber, Fuse, circuit.
Answer this.
Bulb, Rubber, Fuse, circuit.
Answer this.
Pankaj said:
8 years ago
Those who are saying fuse wire have high resistance! I would like to ask them if it is so then according to them it must be low conductivity!
But as far as I know fuse wire must have high conductivity. You guys can decided (G=1/R).
But as far as I know fuse wire must have high conductivity. You guys can decided (G=1/R).
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