04a. The winding on the steel core has 300 turns and the current passes through the winding is 200 mA. Mean path length P= 500 mm I= 200 mA N= 300 turns Cross-seetional area -25 mm * 25 mm Figure Q4a Given the permeability of free space lo = 4x x 10" T/(At/m) and the relative permeability of steel, u.= 800, determine: (i) the magnetomotive force (MMF) produced by the coil; the magnetic field strength (H) in the coil; (ii) (iii) the average magnetic flux density (B): (iv) the magnetic flux (). (b) Ajn inductance circjit is shown in Figure Q4b. The total current flow in the circuit is 2A. IT = 2A LI -4 H L3 = 20 H a o ele LT L2 = 7 H L4 = 12 H bo m L5 = 10 H elll L6-8 H Figure Q4b Determine: (i) the total inductance (L) of the circuit; (ii) the total energy stored in the circuit.
04a. The winding on the steel core has 300 turns and the current passes through the winding is 200 mA. Mean path length P= 500 mm I= 200 mA N= 300 turns Cross-seetional area -25 mm * 25 mm Figure Q4a Given the permeability of free space lo = 4x x 10" T/(At/m) and the relative permeability of steel, u.= 800, determine: (i) the magnetomotive force (MMF) produced by the coil; the magnetic field strength (H) in the coil; (ii) (iii) the average magnetic flux density (B): (iv) the magnetic flux (). (b) Ajn inductance circjit is shown in Figure Q4b. The total current flow in the circuit is 2A. IT = 2A LI -4 H L3 = 20 H a o ele LT L2 = 7 H L4 = 12 H bo m L5 = 10 H elll L6-8 H Figure Q4b Determine: (i) the total inductance (L) of the circuit; (ii) the total energy stored in the circuit.
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Transcribed Image Text:04a. The winding on the steel core has 300 turns and the current passes through
the winding is 200 mA.
I= 200 mA
Mean path length
P= 500 mm
N= 300 turns
Cross-seqtional area
=25 mm k 25 mm
Figure Q4a
Given the permeability of free space lo = 4x x 10" T/(At/m) and the relative
permeability of steel, u,= 800,
determine:
(i)
the magnetomotive force (MMF) produced by the coil;
(ii)
the magnetic field strength (H) in the coil;
the average magnetic flux density (B):
(iii)
(iv) the magnetic flux ().
(b) An inductance circuit is shown in Figure Q4b. The total current flow in the
circuit is 2A.
IT = 2A
LI -4 H
L3 = 20 H
a o
ell
ell
LT
L2 =7H
L4 = 12 H
bo
L5 = 10 H
L6-8 H
Figure Q4b
Determine:
(i)
the total inductance (Lr) of the circuit;
(ii)
the total energy stored in the circuit.
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