Back emf on dc motor in tamil

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What is meant by back emf in dc motor?
What is Back EMF?
When the armature of a DC motor rotates under the influence of the driving torque, the armature conductors move through the magnetic field and hence emf is induced in them as in a generator.
The induced emf acts in opposite direction to the applied voltage V (Lenz’s law) and is known as Back EMF or Counter EMF (Eb).
The equation to find out back emf in a DC motor is given below,
The back emf Eb(= PΦZN/60 A) is always less than the applied voltage V, although this difference is small when the motor is running under normal conditions.
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25 авг 2020

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Комментарии : 44

@sriram7346 4 года назад

Electrical machines pathi thaniya oru class poduga sir

@vishalsk8337 3 года назад

Loud and clear. Good simplistic approach sir!

@ashwanth5634 3 года назад

Sir your teaching is really good Sir your videos are really good , please continue uploading more videos and take this channel EEE vids to the next level many people are nowadays not interested in Electrical Branch, but the main backbone for the entire world is Electrical only Please upload videos for GATE, ESE, ISRO, BARC, SSC JE Exam Level , Please solve more problems which will always be useful in future/ upcoming days

@prabhakaranp7683 2 года назад

Hello, Your videos are awesome in the Tamil language. Technically very clear. How can We relate back EMF and Induction noise! Whenever We switch ON 3 Phase AC motor via some digital Boards, the totally digital section is getting disturbed! How can arrest the noises due to Induction! The LCD is the victim most of the time, randomly MCU will reset. If you have a solution for these it will be so helpful for industrial professionals like us! Many people are suffering due to this issue! Thanks in Advance!!

@swapnak7614 6 месяцев назад

The way of teaching is super 💯 sir🙏

@subashkumar8667 Год назад

Very useful sir.

@subashkumar8667 Год назад

The way of teaching is super😊

@Rahulkrish37 4 года назад

Good work sir

@mohammadarifsadik6467 2 года назад

Sir, What is the back emf protection method for bipolar stepper motor?

@kamaliari6815 2 года назад

Sir can you explain this voltage regulation strategy for quadrupler dc convertor

@kamaleswarans5881 3 года назад

Vera levela nadathuringa Super 👌👌👌

@jayasuryajayasurya3343 3 года назад

Induction motor pathi video podunga

@user-kx8uy2nn1j 6 месяцев назад

Sir back emf supply line reverse direction line voltage damage aguma sir

@snehasathisvaran1786 Месяц назад

Switch gear basic and usages sir

@RaviRadha-fy3fl 3 года назад

Sir please explain grounding and bonding

@abhinandhan6078 3 года назад

Can you please explain about motor constant?

@sundar.v7542 3 года назад

Sir can u plz explain synchronous motor

@prasathcrp3037 4 года назад

Super

@a.vairaperumalthiru9039 4 года назад

Electrical machines I and electrical machines II FULL class edunga sir

@ig_dharanish 3 года назад

Sir how to reduce back emf can you explain please

@sridharm236 3 года назад

Super sir

@kanagaraj4653 4 года назад

Nice sir

@MEB-NITHISHKUMARS 3 года назад

Thankyou sir

@saranyap4476 2 года назад

Tq sir

@MuruganS-xq1zt 3 года назад

Electrical machines 1 & 2 la cover agura topics pathi podunga sir

@sj.arun-vip4081 3 года назад

Sir entha clg sir ninga yaravathu thericha sollunga ...

@neyanmahizh4293 3 года назад

sir in field winding there wont be back.emf

@tamilrider4047 Год назад

Sir enaku electric mechine -1 onnuma puriyala enaku Konjam clear ahh eduka mudiyuma😒

@gokulrajmohan1066 4 года назад

Backemf fieldwinding la create Aagatha sir

@renganathanperumal6265 3 года назад

நல்ல கேள்வி. The armature conductors cut the main flux due to rotation and as a result back emf is produced. Whereas in the field winding the conductors are static and conductors do not cut the flux. Therefore back emf is not produced in field winding.

@sj.arun-vip4081 3 года назад

@@renganathanperumal6265 super sir

@ramachandrandhilipkumar4198 4 года назад

Sir transformer vector group pathi podunga sir. Differential protection

@Kaviyarusu 3 года назад

Can i use motor as a generator

@rowdy.sachin8987 2 года назад

Sir na DEEE student enaku MCQs venum sir books iruntha solluga tamil la reply pannu ga

@thameemansari7554 2 года назад

Magnet epti electromagnet ah maaru

@elanthamizhltv1827 4 года назад

Back EMF எப்படி வெளியே எடுப்பது

@renganathanperumal6265 3 года назад

Supply voltage இருக்கும் வரை தான் back emf -க்கு வேலை.

@jebakumar6318 4 года назад

control of electrical machine subject patti class podunga sir

@srvpetschannel_tamil5071 4 года назад

Hi sir iam diploma student ennaku electrical circuit theory arrear irruku important question madum oru video poduga sir please kindly request sir thank you

@vijayveteran 3 года назад

👏🏻

@dileepkumar-so5hd 4 года назад

If back emf generate what will happen sir

@renganathanperumal6265 3 года назад

Back emf regulates the torque or speed of the motor as it opposes the supply voltage (cause producing it). When the rate of change of cutting flux is low the back emf produced will be less. In this condition more current will flow through the conductor and more torque will be produced. If the rate of change of cutting flux in the conductor is high the back emf produced will be high. In this condition motor withdraws less current from the source. Less current means torque developed in the motor is less.