The following figure shows a simplified endivi and inductor for a dc motor. The inductor has an average magnetic path length of 50 cm and a cross-sectional area of 12 cm2. The mean path length of the endivi is 5 cm and the cross-sectional area is given as 12 cm2. The air gap between the armature and the inductor is 0.05 cm, and the cross-sectional area of each air gap (including fringe effect) is 14 cm2. The magnetic permeability of the iron of the core is µr =2000 H/m and 200 turns are wound on the core. If the current through the conductor is set to be 1 A, a) What is the mmm force of the magnetic circuit? b) What is the reluctance of the inductor and armature? c) What is the magnetic flux density in the air gap? Is it Tesla?
The following figure shows a simplified endivi and inductor for a dc motor. The inductor has an average magnetic path length of 50 cm and a cross-sectional area of 12 cm2. The mean path length of the endivi is 5 cm and the cross-sectional area is given as 12 cm2. The air gap between the armature and the inductor is 0.05 cm, and the cross-sectional area of each air gap (including fringe effect) is 14 cm2. The magnetic permeability of the iron of the core is µr =2000 H/m and 200 turns are wound on the core. If the current through the conductor is set to be 1 A,
a) What is the mmm force of the magnetic circuit?
b) What is the reluctance of the inductor and armature?
c) What is the magnetic flux density in the air gap?
Is it Tesla?
d) Calculate the inductance of the winding.
e) If 10 turns of bandage are wrapped around the armature under these conditions,
What is the torque to be induced if current A is passed?
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