Induction Motor #10 - Torque vs Slip / Speed Chara ( Physical point of view #1 )

[@mradulsingh1618]

Only channel on the youtube which explains induction motor from very basic to advance. Good work sir!! Keep it up👍

[@larrydurante6670]

Hi Varun, you answered the question at 12:16, any increase in the Br has to come from the Bs and of course the 'working mmf' B net like B mutual in a transformer stays the same. This explaination , while sutle, I think is very important to understand as the fundamental mechanism of transfering energy across the gap, or from primary to secondary in the transformer, as always thank you so you SO much!

[@az-op8oc]

Sir how to draw Br ,Er and Bs phasors and how you tell 90degrees bw Br and Ir. Plese reply sir

[@jyotikamaldas3917]

Speed of rotor field=speed of the rotor +s×syncronous speed=syncronous speed=speed of stator field.So, both of the fields will rotate syncronously

[@larrydurante6670]

Hi Varun, at 6:37 you tell us that B net is constant. Is this a similar reason to B mutual being constant in a transformer? Can one think of B net as the 'working mmf' that must stay constant just like the B mutual in a transformer? Similar equivalent circuits lead me to think this is true?

[@shobhitsharma2137]

This is great initiative by you..Thanks for helping us

[@ElectricalisEasy]

Glad to be of help. Please do consider sharing the videos with your friend and anyone who might the videos helpful

[@shobhitsharma2137]

@@ElectricalisEasy I also request you to solve previous year gate and ese questions as well it will be great...

[@SupremeTuber]

these videos helped me out quite a lot , i also have a small channel where i like to improve the quality of education like you however being a Btech student from DTU i can't create much but whatever small audience i have i would definitely like them to know about your channel , great initiative sir

[@abigt282]

very nice and helpful 👍👍

[@larrydurante6670]

Hi Varun, at 12:58 in this video, the equivalent circuit you are discussing needs r2 not r2/s, because you are having x2= s x20 discussion. Hope you are well today.

[@shwetaranjansahoo6829]

Sir why Ir and Br are 90 degree apart

[@andrewvictor1489]

+Why ?

[@larrydurante6670]

Hi Varun, Why wouldn't the no load magnetizing current just produce the stator side magnetizing flux? And the rotor side current product only the rotor side flux? Then the net would be the sum. But isn't the complication that the stator side is system frequency and the rotor side a function of relative speed, so thus the flux in the rotor is a different frequency? Not sure how we still just add them like phasors as you have already explained we can't do that with different frequencies :)

[@adricat59]

Sir it would be nice if you could upload videos on the control of the induction motor.

[@ElectricalisEasy]

Induction motor has just begun..there are many many lectures more to come...

[@adricat59]

@@ElectricalisEasy That's great news, thank you!

[@sanyammaheshwari7575]

Sir at 16.07 you said that Bnet will be const. Howcome sir since Bnet is a Vector Sum of Bs and Br. Now when we load the motor Bs increases and Br also increases as Ir increases. Therefore Bnet will also increase. Also why Bnet is in Phase with Er.

[@sanyammaheshwari7575]

Sir please tell this doubt

[@andrewvictor1489]

@@sanyammaheshwari7575 why Br makes 90 degree with Er ?

[@andrewvictor1489]

@@sanyammaheshwari7575 l think the angle between them increase with increasing of their magnitude so the resultant vector will remain constant

[@mohamedselim4784]

sir how does the B net is in phase with E r ?

[@ElectricalisEasy]

It's just showing the result in space...

[@mohamedselim4784]

@@ElectricalisEasy do you mean itis projected on the Bnet vector sir?!

[@ElectricalisEasy]

I will clear this point in the next doubt clearing session...

[@kulbeersingh9785]

@@ElectricalisEasy sir i have same doubt...

[@arnabpaul7751]

As this is not a phasor diagram... so the Bnet is kept in the same phase in space with Er just for the sake of simplicity of the later calculation... I also had this doubt but I think this is the reason. I hope this explanation might help.

[@soumyabiswas9994]

Sir your videos always hlp me to clear some major problem.... If you make a vdo about harmonics that also hlp me.... Thank you sir.....

[@ElectricalisEasy]

It will come soon...

[@soumyabiswas9994]

@@ElectricalisEasy actually sir i have rrb je exm soon...so if you make that harmonics vdo soon that will realy hlp me for the esm.. I am waiting for it badly... And you process of teaching is hlp me more then anyone.. So plz sir...😇😇😇

[@ElectricalisEasy]

@@soumyabiswas9994 I cannot assure you any timelines..bcz I have a full time job, and I make all these videos either after work or on holidays...

[@soumyabiswas9994]

@@ElectricalisEasy its ok sir your vdo hlp me alot..i will wait..thak you again sir..😊😊😊

[@suryaprathap2727]

Sir can u make axial flux induction motor design calcuations

[@Manojkumar-vl6hi]

Sir both stator and rotor magnetic fields speeds are sqme

[@interestingchannel6914]

I think we can't treat rotor flux and Br in same phase...If I am right..why there is 90 degree phase difference between them as rotor flux and rotor current are in same phase...

[@souravsen2981]

Sir wont that B(r) will lead the induced emf phasor?

[@sanyammaheshwari7575]

Sir, you said in equivalent circuit video that E20 i.e blocked rotor voltage. And E2 which is equal to sE20 which will be less than E20 always. So according to that E20 will be higher at starting and will start decreasing when load increases.

[@ElectricalisEasy]

E20 is not dependent on starting or running it is just the blocked rotor voltage..i.e the voltage when the rotor is not moving.

[@piyushbabaria784]

Sir you will make videos on Speed control of induction motor??

[@ElectricalisEasy]

Yes I will...

[@piyushbabaria784]

@@ElectricalisEasy thank you sir

[@vpc741]

sir can u tell how u r making videos I also want to make videos in my subject please help me sir

[@ElectricalisEasy]

It cannot be explained here as a comment..there are many things .I will.make.a.video in future

[@vpc741]

@@ElectricalisEasy thank you sir

[@tanishqkatiyar5538]

why Bnet will remain constant for every Nm

[@ElectricalisEasy]

Please go through the initial.videos and also ac mahinery Fundamentals course

[@Manster-minds]

Speed of rotor=Ns(1-s) Speed of Br=sNs Add both we get Ns

[@faisalsaddique3323]

love you sir g

[@arrahman6090]

like reading book lines

[@wolf_gamer_100]

Upload problem sir

[@itsme7617]

✌️✌️