Magnetic circuits with air gaps, Electrical Engineering

Assignment Help:

The creation of a magnetic field in a ring may need to be accessed by means of an air gap. This is typically used to apply the magnetic field to a current carrying conductor to produce a force - e.g. in an electric motor.]

Consider therefore, a ring with an air gap present.  

1190_Magnetic circuit with air gap.png

Note that since the flux lines are continuous, the flux density in the air gap and the ring will be the same. 

2341_Magnetic circuit with air gap1.png

However, the air gap represents a much larger reluctance to the flux than the high µ ring, so for the same magneto-motive force, the flux density in the ring will be reduced significantly compared to the case when no air gap was present.


Related Discussions:- Magnetic circuits with air gaps

Ac motors, If the stator windings of an alternator were to be supplied ...

If the stator windings of an alternator were to be supplied by an AC of frequency f (as opposed to drawing an AC current from them as would be the case for an alternator) then

Circuit theory, matlab program for verifying maximum power transfer

matlab program for verifying maximum power transfer

The direction of motion, At what velocity must a conductor 75 mm long cut a...

At what velocity must a conductor 75 mm long cut a magnetic field of flux density 0.6 T if an e.m.f. of 9 V is to be induced in it? Suppose the conductor, the field and the directi

What do you mean by communication channel, Q. What do you mean by communica...

Q. What do you mean by communication channel? The communication channel (transmissionmedium) is the physicalmediumthat is utilized to send the signal from the transmitter to th

DC motor & encoder, If a high resolution emcoder is used for position contr...

If a high resolution emcoder is used for position control, will the number of pole count in the DC motor be matter? What is the requirement for the DC motor in order to work with h

Determine whether the systemnoise, The expression given in Problem for (S 0...

The expression given in Problem for (S 0 /N 0 )PCM is plotted for a sinusoidal message in Figure to show the performance curves for a PCM system using a polar waveform. (a) Comm

Explain about delay system, Q. Explain about Delay System? Delay Syste...

Q. Explain about Delay System? Delay System: A class of telecommunication networks, like data networks, places the message or call arrivals in a queue in the

Characteristics of an n-channel enhancement mosfet, Q. Find idealized expre...

Q. Find idealized expressions for the active and ohmic states and sketch the universal characteristics of an n-channel enhancement MOSFET operated below breakdown.

Magnetic field due to an electric current, Magnetic field due to an electri...

Magnetic field due to an electric current   Let a piece of wire be arranged to pass vertically by a horizontal sheet of cardboard, on which is placed few iron filings.  If a curr

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd