Electrical Engineering - Voltage, Current and Resistance - Discussion
Discussion Forum : Voltage, Current and Resistance - General Questions (Q.No. 25)
25.
The current in a given circuit is not to exceed 24 A. Which value of fuse is best?
Discussion:
20 comments Page 2 of 2.
NEELADURGARAO said:
1 decade ago
every safety equipment having have some safety factor and fusing factor
i.e.,
every fuse having fusing factor it is 1.2 % of rated current
if u connect a 24 amp fuse wire it will break up load is 29 amps
there fore the answer is D
i.e.,
every fuse having fusing factor it is 1.2 % of rated current
if u connect a 24 amp fuse wire it will break up load is 29 amps
there fore the answer is D
RAM GOPAL said:
1 decade ago
If we use the fuse having rating 20A the fuse blown at 20A CURRENT but the question is that the fuse does not exceed the 24A so best option is 24A.
Sri said:
1 decade ago
Yes, answer is 24A. If current flow exceeds 24A then fuse works and breaks up the circuit, till then circuit is safe.
T.Ramachandran said:
9 years ago
Fuse is used as a protective device. Here we have to permit current up to 24A. So the fuse should permit the current up to 24A and beyond that the fuse should get melt and circuit get broken.
Rahul said:
9 years ago
Fuse always use for low current.
Shrijith jain said:
8 years ago
As mentioned in the question that not to exceed above 24 amps so suitable option is 'D'. But the rating of any fuse is calculated as below.
Fuse rating = (Power/Voltage) x 125%.
Fuse rating = (Power/Voltage) x 125%.
Latha said:
1 decade ago
The current shud not exceed 24A, if a fuse 24A fuse s used it ll fuse at 24A nd it ll not let the current exceed 24A right? So isn t de answer right?
M.Rajasekhar said:
1 decade ago
Fuse will be made -depends upon the rated current of a circuit.
Sakthiraja m said:
7 years ago
24A is correct because in the faulty condition the current flow in the circuit is above 24A. So it situation we choose 20A fuse the circuit will damage so when a current value is 24A means the fuse will be selected at above 24A is the best one.
Shivaraj said:
1 decade ago
Practically speaking the fuse rate must always be less than the rated load rate. Then only it could safe it against over current.
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