Why only 3 phases are used ? - L 32 | Learn Engineering | GATE/ESE 2022

[@abhikphaujdar6495]

Dear Sir, Kindly start Analog Electronics (Hindi) on KZbin after the completion of the Power Electronics full course.

[@mansooralam2554]

Sir amazing amazing h learn enginnering ab to lga hai engieer h hum....sir power system and machine ka animation series bnado

[@pksundar674]

Sir No push button and NC push button kya hota hai kaha use karte hai sir please make a video this question

[@manirajprasad9969]

Thank you sir 🙏🙏🙏🙏

[@bipinkumarjsr1995]

Answer is not satisfied ! Please refer "Electrical technology - by H. Cotton " Polyphase chapter

[@jatinchaudhary823]

Sir please can you start the same series for ECE branch?

[@soumyadipbanerjee7099]

Thanks a million sir

[@Surajbhai-153]

Sara hi cost ka khel hai 😊

[@atulsinghrajput5115]

Sir why not 2 phase?

[@manojitbag]

As there will be 180 degree phase difference between phases in two phase, they will cancel out each other.

[@mansooralam2554]

Bhai 4 nd 5 phase k baare mei bhi btado

[@manojitbag]

90 degree phase difference in case of 4 phases, each pair of them will be cancelling out opposite pair. And we generally don't need 5 phases afterall, the maximum power that is being used can be transferred in 3 phase. Higher than 3 phases will have more power loss.

[@KreatryxEE_EC_IN]

@@manojitbag in 2 phase we have 90 degree shift and not 180 Also in a balanced 3 phase as well all 3 voltage sum is zero so we cannot use cancellation of voltages as an argument to support the use of 3 phase

[@manojitbag]

@@KreatryxEE_EC_IN thank you, sir!

[@nileshvalhe1208]

India me 50HZ frequency kyu li jati hai

[@manojitbag]

It's more of mechanical purpose. If we see efficiency vs speed characteristics in steam turbine, there's maximum efficiency at speed of 3000 to 3600 rpm. As generators have generally 4 poles , frequency can be easily found out using N=120f/P formula. Take p = 4 and N = 3000.

[@KreatryxEE_EC_IN]

Already a video done on this

[@manojitbag]

@@KreatryxEE_EC_IN yes sir! 🌞