Electrical Engineering - Magnetism and Electromagnetism - Discussion
Discussion Forum : Magnetism and Electromagnetism - General Questions (Q.No. 24)
24.
What is the reluctance of the circuit in problem 9 if the flux is 275 
Wb?
Wb?Discussion:
17 comments Page 1 of 2.
Mak said:
9 years ago
MMF value is in ampere-turns, this is analogous to the EMF which is in volts. MMF is in magnetic while EMF is an electric.
Gopalan said:
10 years ago
Question not clear ?
AT is not given?
AT is not given?
Stuti kushwaha said:
10 years ago
Please solve anyone.
Mahesh said:
1 decade ago
Someone please clarify how 8,727 At/Wb answer will come?
Fan said:
1 decade ago
Circuit in problem 9? Really?
Prajith said:
1 decade ago
Reluctance = l/m0mrA.
l ==> length of the magnetic circuit.
m0 ==> permeability.
mr ==> relative permeability.
A==> area of cross section.
But how to solve this question?
l ==> length of the magnetic circuit.
m0 ==> permeability.
mr ==> relative permeability.
A==> area of cross section.
But how to solve this question?
Alice said:
1 decade ago
We need current and number of turns or mmf or length to find reluctance.
Deepak kumar senapati said:
1 decade ago
How will we derive the formula ?
Sudhakar said:
1 decade ago
Reluctance = L/(mu)A = inductance/((absolute permeability*relative permeability)*Area).
Naveen said:
1 decade ago
reluctance=l/(mA)
l-magnetic circuit length not the inductance
m-permeability
A-cross sectional area
flux and cross sectional area given for the problem we need l to find the reluctance..
l-magnetic circuit length not the inductance
m-permeability
A-cross sectional area
flux and cross sectional area given for the problem we need l to find the reluctance..
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