EEE: Module 3 Flashcards
(14 cards)
1
Q
Magnetic Field Strength (H)
A
H = NI/L
2
Q
MMF
A
MMF = NI
3
Q
Magnetic Flux
A
Φ = BA
4
Q
Magnetic Flux Density
A
B = μH
5
Q
Magnetic Field Strength of Toroid
A
H = NI/2piR
(where R is mean radius)
6
Q
Flux Linkage
A
λ = NΦ
7
Q
Reluctance
A
R = L/μA
8
Q
Self Inductance
A
L = NΦ/I
9
Q
Mutual Inductance
A
M = k sqrt(L1L2)
10
Q
Effective air gap are due to fringing
A
Agap = (w+g)(h+g)
11
Q
Total Inductance of series aiding connection
A
L = L1+ L2 + 2M
12
Q
Total Inductance of series opposing connection
A
L = L1 + L2 - 2M
13
Q
Ohm’s law for magnetic circuits
A
Φ = mmf/R
14
Q
EMF produced
A
E = -L1di/dt ∓ Mdi/dt
