MH Tutorial English
MH Tutorial English
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How Motor Rotates? Motor Rule. Fleming's Left Hand Rule. Class 10 & Class 12 Physics.
How an electric motor rotates?
Here, in this short animation video, we will learn the basic structure and function of a simple electric motor. Once you understand a simple motor, your idea of ​​those complex motors will be made.
In a simple motor, the two poles of a horse-shoe magnet are placed very close to each other.
The lines of magnetic field are always oriented from the North Pole to the South Pole. These green particles are pointing to the lines of magnetic field.
Each motor has a loop-shaped, twisted, insulated wire. It's called armature. Armature, typically may consists of multifold loops of wire. But, for the sake of simplicity, we have discussed a single wire armature here. The armature is held in such a way, that its two functional arms, the red coloured arm and the blue coloured arm, always remain perpendicular to the magnetic field.
Two semicircular metal sheets are attached to each ends of the armature wire. These semicircular pieces are called commutators.
The armature is held tight by means of an insulated cylinder-shaped bar and two ball bearings, in such a way that the armature can rotate very easily.
Two gas-carbon brushes are placed next to the commutator. Brushes are placed in such a way that when one brush touches a commutator, the other brush will touch the another commutator.
We need a battery. One end of the battery is to be connected to a switch, through a wire. Then, using another wire, the switch, and, a carbon brush, is joined.
Another wire is taken, to connect the other end of the battery to other carbon brush.
A switching starts a steady current. This flow of current starts from positive end of the battery to switch. Switch to carbon brush. Carbon brush to commutator. Commutator to armature. Armature to another commutator. Another commutator to another carbon brush. And at last to the negative end of the battery.
Now let us see the functions of the commutators.
When the rotating armature lays between angles of 280 degree, that is, minus 80 degree and plus 80 degree, the positive end of the battery comes in contact with the red commutator. And the blue commutator is stuck to the negative end of the battery. In this situation, through the red arm near the south pole, an electric current will flow inwards. And, in the blue arm near the North Pole, electric current will flow outwards.
If the armature rotates further, at angles between, 80 degree and 100 degree, the commutators will lose connection with the brushes. And there will be no electric current to flow.
Then, from 100 to 260 degree angle, again the connection will be established. However, the direction through the armature will be changed. Because of this, in the blue arm near the South Pole, current will flow inwards, just as it was in the red arm before. And, in the red arm near the North Pole, the electric current will flow outwards. In the previous instance, when the blue arm stayed there, a similar inward current was observed.
There after, the armature is rotated a bit to lay between 260 and 280 degree with respect to the horizontal line. And in this case, line is disconnected again. So, the current stops flowing.
But, shifting towards 280 degree, that is, minus 80 degrees and upto plus 80 degree, will create a situation like the first one. And the electrical current will flow.
So, we observed that, rotation of commutators bring changes in current flow in the armature. It starts, stops and changes direction of the current, periodically.
Also, note that, whichever arm comes closer to south pole, its current will be inwards. And, the arm near the north pole, will flow current outwards. These are the functions of the commutators.
Parts of motor are roughly classified into two types. The rotor, and the stator. The rotor is the parts of the entire motor that can rotate. For example, armature, commutator, cylindrical bar, etc are rotors. And the parts that remain fixed, are called stators. Stators are, magnets, ball bearings, carbon brushes, wires, et cetera.
When an electric current flows through a magnetic field. That magnetic field exerts a force on the current carrying wire. The direction of the force can be determined by using Fleming's left-hand's rule.
If we arrange our left thumb, index finger, and middle finger, perpendicular to each other. And if the index is pointing towards the magnetic field. And the middle finger is in the direction of current. Then, the force will be in the direction of the thumb.
And this force will push the electric wire to this direction.
How does Fleming's left-hand rule drive electric motors?
If the motor is switched on, the electrical current will start.
Applying Fleming's left-hand rule to the arm near the South Pole, we will see that an upward force is acting on the arm.
Again, by applying Fleming's left hand rule to the arm that is near the North pole, it will be seen that a downward force is acting on the arm.
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КОМЕНТАРІ

  • @izmakhan7672
    @izmakhan7672 6 днів тому

    This animation explained very well

  • @IppuIppu-e8d
    @IppuIppu-e8d 26 днів тому

    😢

  • @Kradlum
    @Kradlum Місяць тому

    Thank you! My son (16 today!) has just started an accelerated maths and physics program, and we spent a long time discussing how a parsec is measured. He had very nearly worked it out, but couldn't fit his ideas with the explanations we found online. This is the clearest explanation we have found!

  • @taishanlahu
    @taishanlahu Місяць тому

    Finally figured it out after 30 years, thank you very much🥰🥰

  • @nripendrasharma5984
    @nripendrasharma5984 Місяць тому

    Great👍👍👍

  • @karishmakhan7870
    @karishmakhan7870 Місяць тому

    Best explanation 😊

  • @PatriciaJackson-s9k
    @PatriciaJackson-s9k Місяць тому

    Crooks Mountain

  • @FjgjjkgjhFggyfvbc-q5s
    @FjgjjkgjhFggyfvbc-q5s 2 місяці тому

    Karli Union

  • @MickWoods13
    @MickWoods13 2 місяці тому

    Fantastic, thanks 👏

  • @stttttipa
    @stttttipa 3 місяці тому

    Perfect. Thanks!

  • @anshsingh6834
    @anshsingh6834 4 місяці тому

  • @awaken5739
    @awaken5739 4 місяці тому

    You are a gem

  • @DonutGuy640
    @DonutGuy640 4 місяці тому

    I'm still confused about something. We don't have eyes from the POV of the sun, so how do we know that angle? Do we view it on the horizon at midnight, then wait 3 months and look straight up? God help you if you say to calculate it from the distance 😂

  • @VISHWAp.s-w8v
    @VISHWAp.s-w8v 4 місяці тому

    what a great explanations

  • @arpitstudy3744
    @arpitstudy3744 4 місяці тому

    wow fabulous explanation

  • @ayeshasiddiqa5008
    @ayeshasiddiqa5008 4 місяці тому

    i am your 700th subscriber

  • @kanthesand8521
    @kanthesand8521 5 місяців тому

    A Super and understandable Explanation 👏👏👏

  • @Alex-tn7pv
    @Alex-tn7pv 5 місяців тому

    And I thought this was made up for Star Wars back in the day.

  • @Buffinton
    @Buffinton 5 місяців тому

    18:25 False! Neptune's atmosphere is made up of hydrogen, helium and methane. The methane in Neptune's upper atmosphere absorbs the red light from the sun but reflects the blue light from the Sun back into space. This is why Neptune appears blue. So if you were to go into Neptune atmosphere ignoring the obvious problems with that, It will be Blue

    • @Buffinton
      @Buffinton 5 місяців тому

      Now look Neptune isn't that Deep blue and I'm not saying that, I'm saying it looks hardly like Uranus, Its a lot more on the blue side than grey.

  • @kurtlittlewood4279
    @kurtlittlewood4279 5 місяців тому

    Clear and concise. Thanks

  • @PiyushSingh-rs9ke
    @PiyushSingh-rs9ke 5 місяців тому

    Thank u sir

  • @ChinmayiMangoli
    @ChinmayiMangoli 5 місяців тому

    very nicely explained. I finally understood what parsec actually means.

  • @Orphicallyher
    @Orphicallyher 5 місяців тому

    Thats soo good🎉

  • @LamirLakantry
    @LamirLakantry 6 місяців тому

    Okay. That explained the what very well. Now, what about the why? Why use such a convoluted measurement for anything? Why not just use lightyears?

    • @mhtutorialenglish4772
      @mhtutorialenglish4772 6 місяців тому

      You can not identify a portion of a light beam separately. Also, how many years it takes, to reach the Earth. Therefore, you can not measure distance directly, in unit of lightyear. Parsec is directly measurable.

    • @LamirLakantry
      @LamirLakantry 6 місяців тому

      @@mhtutorialenglish4772 Sorry, I don't quite understand. A lightyear is a unit of length, and a parsec is another unit of length. I don't understand why one is more useful than the other. Except that a parsec seems to be a much more complicated unit to derive.

  • @AishaBridalCollection
    @AishaBridalCollection 6 місяців тому

    Very helpful

  • @Studymotivation632
    @Studymotivation632 6 місяців тому

    Mc

  • @joverielrepublo7633
    @joverielrepublo7633 6 місяців тому

    can i have a question where does the 10^16 come from im confuse

  • @sudhakumari1765
    @sudhakumari1765 6 місяців тому

    YEARS OF DOUBT RESOLVED🔥🔥🔥🎉✨✨ THANKS👍✨💕

  • @sk.samiulreza6205
    @sk.samiulreza6205 7 місяців тому

    Does the same plane rule apply for the refraction as well?

  • @chandrekishoreyadav8847
    @chandrekishoreyadav8847 7 місяців тому

    I leave this comment because, u think this video is very helpful for me..😊

  • @chirasmitaspr1062
    @chirasmitaspr1062 7 місяців тому

    Very bad

  • @AbyssalDominion
    @AbyssalDominion 7 місяців тому

    Dude thanks a lot it helped me a lot

  • @NitinKohli-jl8fz
    @NitinKohli-jl8fz 7 місяців тому

    Good explanation 😊

  • @shivakumargv9468
    @shivakumargv9468 7 місяців тому

    Thank you for this information 👍

  • @ROHITGUPTA-y7k2d
    @ROHITGUPTA-y7k2d 8 місяців тому

    Great explanation 😊

  • @lakhsmisreesaha
    @lakhsmisreesaha 8 місяців тому

    Thanks a lot. ❤

  • @viratzfan2009
    @viratzfan2009 9 місяців тому

    Wow, what an explanation. I found this masterpiece after 1 yrs . Your channel deserves more subscribers ❤

  • @apurava9
    @apurava9 9 місяців тому

    it was helpful, thanks

  • @atmaramgotame
    @atmaramgotame 9 місяців тому

    Thank you very much.

  • @Mr_B0nz
    @Mr_B0nz 9 місяців тому

    Finally understood what it is! Your video was the best explanation! Thank you

  • @nupursonker1320
    @nupursonker1320 9 місяців тому

    Amazing thankyou

  • @SirViving
    @SirViving 9 місяців тому

    Excellent explanation.. clear and to the point 👍🏻

  • @Ruchi553
    @Ruchi553 10 місяців тому

    What is arc- second please clarify

    • @mhtutorialenglish4772
      @mhtutorialenglish4772 10 місяців тому

      Arc-second is a small unit of angle, just like degree and radian. 1 arc-sec = 1/3600 th of a 1°.

    • @mhtutorialenglish4772
      @mhtutorialenglish4772 10 місяців тому

      1° = 60' = 3600" ° is symbol of arc degree ' is symbol of arc minute " is symbol of arc second

  • @hemabasaksingharoy8847
    @hemabasaksingharoy8847 10 місяців тому

    Hi

  • @sachinsir7926
    @sachinsir7926 10 місяців тому

  • @victorvictor3483
    @victorvictor3483 10 місяців тому

    How to measure the angle?

    • @mhtutorialenglish4772
      @mhtutorialenglish4772 10 місяців тому

      By method of parallax.

    • @victorvictor3483
      @victorvictor3483 10 місяців тому

      Elaborate pls? Many video also mention the same thing, by method of parallax. But no further elaboration. Is there a special instrument used or something?

  • @jimmyjones4985
    @jimmyjones4985 11 місяців тому

    The best explanation of parsecs yet .

  • @khaliffoster3777
    @khaliffoster3777 Рік тому

    So, to culcate the weber, so you use high volt to cause the impact to the magnet to see how much weber, it can absorb, so use that material since that materials will absorbs high weber, per high resistance to be used as storage to be use, so becomea battery. So, Iron is high captance, so good battery. You put motion of electricity which there is resistance or it goes around, Well, there is connect of circuit wire, which the electricity go around, so as it nears the magnet field in slow or fast, the motion of emf is faster. The point how weber is calculate. So, know what materials can be use as range of reluctance to permeability. The higher magnet force which the iron has so the absorbility rate, per second is high like weber show, so it is high weber mass, so the high part for weber is not base on how much, but how fast it can absorb. Tesla is for strengh, Weber is for speed.

  • @theplinkerslodge6361
    @theplinkerslodge6361 Рік тому

    I'm a genius now, thank you.

  • @jeanma2104
    @jeanma2104 Рік тому

    really nice and clear explanation thank you