How Does Coil Configuration Affect Inductance and Coupling in Magnetic Circuits?

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SUMMARY

The discussion focuses on the effects of coil configuration on inductance and coupling in magnetic circuits. Two coils, A and B, exhibit a total inductance of 2.33 H when connected in parallel-aiding and 1.4 H when connected in parallel-opposing, with a mutual inductance of 1 H. The coefficient of coupling is questioned when the coils are connected in series, assuming mutual inductance remains unchanged. Additionally, the calculation of the number of turns in a winding is discussed, given a flux density of 42,000 maxwells per sq. in. and a current of 2.2 A.

PREREQUISITES
  • Understanding of inductance and mutual inductance concepts
  • Knowledge of magnetic circuits and coil configurations
  • Familiarity with the calculation of turns in electrical windings
  • Basic principles of electromagnetism and flux density
NEXT STEPS
  • Research the formula for calculating the coefficient of coupling in series-connected coils
  • Study the impact of coil configuration on inductance in magnetic circuits
  • Learn how to calculate the number of turns in a winding based on mmf and current
  • Explore the relationship between flux density and magnetic field strength in electric motors
USEFUL FOR

Electrical engineers, students studying electromagnetism, and professionals involved in designing magnetic circuits and electric motor windings will benefit from this discussion.

rockerboi
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I'm not sure if my answer is correct, I need someone to help me solve this so I could check my answer..

1.) 2 coils A and B are magnetically coupled. When connected in parallel-aiding, the total inductance is 2.33 H, and when connected in parallel-opposing the total inductance is 1.4H. The mutual inductance is 1H. What will happen to the coefficient of coupling if the 2 coils were connected in a series assuming that the mutual inductance remains the same?

2.) The flux density in the 0.2" air gap of an electric motor is 42,000 maxwells per sq. in. If the mmf required to produce this flux is 82% of the total mmf developed by the exciting coil, calculate the number of turns in the winding,assuming a current of 2.2 A.

Thanks guys!
 
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As per usual protocol, I guess it would be proper for you to post your own attempts or solutions >_>. Not my rules, but I see good reason for them.
 
rocker, if you're not aware of the guidelines regarding schoolwork, please click my signature line.
 
ok! i'll send my solution next time coz I'm in a hurry..i've got so many exams
 

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