Electrical Machine 01 | Basics of Transformer | EE & IN | GATE Crash Course

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  • เผยแพร่เมื่อ 24 ธ.ค. 2024

ความคิดเห็น • 59

  • @GATEWallah_EE_EC_CS_IN
    @GATEWallah_EE_EC_CS_IN  2 ปีที่แล้ว +4

    Dear GATE Aspirants, Lecture notes, DPP, Video and everything related to the class will be provided on the PW App. Inside the PW App, Gate Crash Course and Abhyas Batch for every class are created in the GATE category. There you can enroll in a free batch and access Videos, Notes, and DPPs.
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    • @funny_rolsan8719
      @funny_rolsan8719 2 ปีที่แล้ว

      Your voice clarity is not good ...
      Fati speaker ki tarah awaz kartehoo bhai..

    • @SujalJani_IIT_Goa
      @SujalJani_IIT_Goa 16 วันที่ผ่านมา +1

      Summary of this lecture :
      1) Transformer is a device which transfers electrical energy from one to another circuit using magnetic fields, keeping constant frequency.
      2) Its main purpose is to vary the voltage level during transmission so that we can have lower resistive loses from wires, without increasing their area of cross section, thus reducing the material used.
      3) Analogy between electric and magnetic circuit : Current Flux, Voltage MMF (= NxI), Resistance ( = resistivity*L/A) = Reluctance (= L/(A*permiability)), Conductivity Permeability, Electric Field (= V/L) = Magnetic Field (H = MMF/L), Current density (J=I/A=resistivity*E) Magnetic Flux Density (B = Flux/Area = H/mobility).
      4) Faradays Law : Magnitude of induced emf inside a single coil, will be equal to rate of change of magnetic flux linked in that coil. (Linked means flux inside coil and perpendicular to area of cross section of that coil.)
      5) Lenz's Law : Induced emf inside the flux would be such that, if the coil is closed, than a current would be produced in such a direction that the flux produced by that current will oppose the flux due to which it was produced. (Son attacking Father)
      6) Ideal Transformer :
      Assumptions :
      (1) No Resistive loss in coils, ie, infinite conductivity.
      (2) No reluctance loss in core, ie, infinite permeability.
      (3) Source is an infinite power generator.
      (4) No leakage Flux.
      (Conservation of energy)
      Flux is generated without any current or say a current tending to 0 due to infinite permeability of the material.
      As the flux links two coils, any change in flux will cause an induced emf based of faradays law in both the coils. As resistive losses are 0, so, E1=V1 and E2=V2. I1 initially would be 0, I2 will be generated due to load. I2 will created an induced flux, to counter it and keep Flux inside core constant, I1 will be generated. MMF balance is seen here.
      N1*I1 = N2*I2 and V1/V2 = E1/E2 = N1/N2. Also, P1 = P2.
      I1---I2 in ideal transformer will be in same phase. E1 and E2 will be in same phase.
      E1 and E2 will always lead Flux and I1,I2 will depend on load value.

  • @Factswithpriyanshu_
    @Factswithpriyanshu_ ปีที่แล้ว +20

    It feels very proud as most of the faculties for gate in PW are from Bihar ❤❤.

  • @SujalJani_IIT_Goa
    @SujalJani_IIT_Goa 16 วันที่ผ่านมา +4

    Summary of this lecture :
    1) Transformer is a device which transfers electrical energy from one to another circuit using magnetic fields, keeping constant frequency.
    2) Its main purpose is to vary the voltage level during transmission so that we can have lower resistive loses from wires, without increasing their area of cross section, thus reducing the material used.
    3) Analogy between electric and magnetic circuit : Current Flux, Voltage MMF (= NxI), Resistance ( = resistivity*L/A) = Reluctance (= L/(A*permiability)), Conductivity Permeability, Electric Field (= V/L) = Magnetic Field (H = MMF/L), Current density (J=I/A=resistivity*E) Magnetic Flux Density (B = Flux/Area = H/mobility).
    4) Faradays Law : Magnitude of induced emf inside a single coil, will be equal to rate of change of magnetic flux linked in that coil. (Linked means flux inside coil and perpendicular to area of cross section of that coil.)
    5) Lenz's Law : Induced emf inside the flux would be such that, if the coil is closed, than a current would be produced in such a direction that the flux produced by that current will oppose the flux due to which it was produced. (Son attacking Father)
    6) Ideal Transformer :
    Assumptions :
    (1) No Resistive loss in coils, ie, infinite conductivity.
    (2) No reluctance loss in core, ie, infinite permeability.
    (3) Source is an infinite power generator.
    (4) No leakage Flux.
    (Conservation of energy)
    Flux is generated without any current or say a current tending to 0 due to infinite permeability of the material, as it links two coils, any change in flux will cause an induced emf based of faradays law in both the coils. As resistive losses are 0, so, E1=V1 and E2=V2. I1 initially would be 0, I2 will be generated due to load. I2 will created an induced flux, to counter it and keep Flux inside core constant, I1 will be generated. MMF balance is seen here.
    N1*I1 = N2*I2 and V1/V2 = E1/E2 = N1/N2. Also, P1 = P2.
    I1---I2 in ideal transformer will be in same phase. E1 and E2 will be in same phase.
    E1 and E2 will always lead Flux and I1,I2 will depend on load value.

    • @RaviNagar16
      @RaviNagar16 15 วันที่ผ่านมา +1

      Thanks for the summary brother, came here to revise and just your comment was enough for that.

    • @pratikmutyalwar2613
      @pratikmutyalwar2613 3 วันที่ผ่านมา

      save my time brooooooooooo

  • @rajibprasad3089
    @rajibprasad3089 10 หลายเดือนก่อน +2

    Best teacher got for Electrical machines ❤❤❤❤❤❤

  • @ankitdubey4756
    @ankitdubey4756 ปีที่แล้ว +4

    Best teacher ❣️❣️❣️❣️❣️❣️👍☺️ thanqu physics wallah 🤓

  • @GovindSingh-ke2uz
    @GovindSingh-ke2uz 4 หลายเดือนก่อน +3

    Sir you look like kumar shanu and teach in nice way thank you ji ❤❤

  • @franky_shubh7741
    @franky_shubh7741 2 ปีที่แล้ว +4

    #MAZA AA GYA GURUJI

  • @focusupsc9639
    @focusupsc9639 9 หลายเดือนก่อน +1

    Very good explanation sir..

  • @VinayKumar-uw3eg
    @VinayKumar-uw3eg ปีที่แล้ว +2

    pura khol dia sir...nice

  • @GPKPV
    @GPKPV 19 วันที่ผ่านมา

    Thanks you sir,
    Maine pahali bar electrical machine ko feel kiya
    Abhi mai polytechnic karta hu but maza aa gaya sir
    ❤❤❤❤❤❤❤❤

  • @kunalpandey9896
    @kunalpandey9896 2 ปีที่แล้ว +9

    You are awesome sir🧡........

  • @aksh465
    @aksh465 2 ปีที่แล้ว +5

    maza aagya aaj..Love u sir!

  • @prateeksharma4251
    @prateeksharma4251 2 ปีที่แล้ว +4

    Jai hind sir 🇮🇳 and Thank you sir.. bhot maza aaya 💙💙

  • @Electrifying_Entrepreneurs
    @Electrifying_Entrepreneurs 10 หลายเดือนก่อน

    the following test data were taken on a 30-kva, 2400/240 v, 50-hz, single-phase transformer: open − circuit test ∶ v = 2400 v, i = 0.3 a, p = 230 w short − circuit test ∶ v = 70 v, i = 18.8 a, p = 1050 w determine the primary voltage, real and reactive power input, and efficiency, when a current of 12.5 a at 240 v is drawn from the low-voltage side by a load of 0.8 p. f. lagging

  • @itzjweal
    @itzjweal ปีที่แล้ว +1

    First class.... Best class ever

  • @RaviNagar16
    @RaviNagar16 24 วันที่ผ่านมา +1

    Sir you have shown that Im and Flux doesnot have any phase difference, while it should have.

    • @varunsrivastava6811
      @varunsrivastava6811 6 วันที่ผ่านมา

      There is no difference in phase of flux and Im . However phase difference exit between no load current and flux . Continue with second lecture so that you will have better understanding of practical transformer

  • @riteshranjan23
    @riteshranjan23 2 หลายเดือนก่อน

    Maza aa gya sir 🫡

  • @mahendrakumar-ed7yk
    @mahendrakumar-ed7yk 2 ปีที่แล้ว +3

    you are amazing sir

  • @_saqxib_77
    @_saqxib_77 หลายเดือนก่อน +1

    Thank you sir

  • @Muskan1Chaurasiya
    @Muskan1Chaurasiya 2 ปีที่แล้ว +3

    Love you sir❤️❤️❤️

  • @sonikaagrawal
    @sonikaagrawal 2 ปีที่แล้ว +4

    You are amazing!!

  • @railgyan554
    @railgyan554 11 หลายเดือนก่อน

    mza aa gya sir

  • @aviralshinaha
    @aviralshinaha 2 ปีที่แล้ว +2

    Thank you ❤❤

  • @sonalisharma9659
    @sonalisharma9659 9 หลายเดือนก่อน

    Sir pdf kha milegi?

  • @SG-yh3uc
    @SG-yh3uc 10 หลายเดือนก่อน

    insulation kya hota hai?

  • @oceanjayant8653
    @oceanjayant8653 ปีที่แล้ว +1

    how to get the lecture notes??!

    • @Atta35
      @Atta35 11 หลายเดือนก่อน

      Kia aap ko notice mil gaye?

  • @MrAbirSaha
    @MrAbirSaha 5 หลายเดือนก่อน +2

    Wow

  • @udayabhaskar-m7f
    @udayabhaskar-m7f 3 หลายเดือนก่อน

    Can you translate your classes in english it will be helpful for South Indian students

  • @kd_baba7033
    @kd_baba7033 2 ปีที่แล้ว +4

    #maja

  • @jagritisingh2110
    @jagritisingh2110 3 หลายเดือนก่อน

    Any one suggest best youtube class for rrb je

  • @surajkumar-qo8qv
    @surajkumar-qo8qv 2 ปีที่แล้ว +2

    ❤️❤️❤️

  • @Amardipkumarsha
    @Amardipkumarsha 7 หลายเดือนก่อน

    Ham aapka pd par course dekh rahe hai

  • @Amardipkumarsha
    @Amardipkumarsha 7 หลายเดือนก่อน

    Gate Acedmy teacher hai aap

  • @Adesh2.O
    @Adesh2.O 2 ปีที่แล้ว +1

    Sir transformer ko transformer hi kyu kahte hain koi aur name bhi ho skta tha..

    • @varunsrivastava6811
      @varunsrivastava6811 2 ปีที่แล้ว

      ??

    • @sumit9902
      @sumit9902 2 ปีที่แล้ว +3

      Tumhara naam adesh hi kiyon hai admi kiyon nhi

    • @sujitkumardash5650
      @sujitkumardash5650 ปีที่แล้ว +1

      Transforming something means changing its form . Since this static device is used to change the form of the voltage(increase or decrease)so it's called Transformer.

  • @junior.gzp_
    @junior.gzp_ ปีที่แล้ว +1

    ❤❤❤❤❤❤❤❤❤❤❤❤❤

  • @lakshitpandey5720
    @lakshitpandey5720 2 ปีที่แล้ว +1

    👍👍👍

  • @PrinceSingh-yw7yj
    @PrinceSingh-yw7yj 2 ปีที่แล้ว +1

    ♥️

  • @viveklahare1983
    @viveklahare1983 ปีที่แล้ว

    Sir no body tell y their is needed of xmer😊

  • @varshasharmasharma1962
    @varshasharmasharma1962 2 ปีที่แล้ว

    hello sir

  • @sanketjadhav1321
    @sanketjadhav1321 2 ปีที่แล้ว

    😍

  • @MOHANRATHORE-x2p
    @MOHANRATHORE-x2p 2 หลายเดือนก่อน

    Very nice explanation 👍

  • @aniljadhav4500
    @aniljadhav4500 ปีที่แล้ว

    ❤❤❤❤❤

  • @abinashmohapatra6269
    @abinashmohapatra6269 ปีที่แล้ว

    ❤️❤️

  • @gaukaransingh9231
    @gaukaransingh9231 10 หลายเดือนก่อน

    ❤❤❤❤❤❤❤❤❤❤❤

  • @axieindia8009
    @axieindia8009 ปีที่แล้ว +1

    ❤❤❤❤❤

  • @MOHANRATHORE-x2p
    @MOHANRATHORE-x2p 2 หลายเดือนก่อน

  • @Karmpatha
    @Karmpatha 8 วันที่ผ่านมา +1