I have been watching your videos from past one week now.. and I m Seriously shocked about your views.. you seriously deserve alot of veiws. Thank you sir for these videos.. 🙏😊
Sir, How can we perform the open circuit and short circuit test of a three phase transformer? Should we connect only a single phase supply to one of the three phases of the transformer, carry out the test like a single phase transformer? Or do we supply all the three phases, use two wattmeter method to measure power and do some fancy calculations? Please help me out, I'm going nuts.
Sir If I1 is so small that we neglect copper loss I1^2 r1 then Ic is smaller than I1. Why don't we neglect Core loss I^2 * rc then? This point is driving me crazy no matter how many books i search.
the core losses are actually flux dependent, so ina way they are voltage and frequency dependent, that is why in the eqyivalent circuit and in numericals you will see the value of Rc is much much higher then r1 or r2, so that power loss cannot be neglected...this is why i ask to look numericals closely to get the feel of the values involved
So the experimental result must contain copper loss also. Though at 5% of full load current. That loss will be current dependent. So resull will vary accordingly.
No load current which passes through excitation branch is Im. In this case, only no load current exists as there is an open circuit at the load. Therefore I1=Im
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Thank you brother💞
l think that the no load current depends on the supply voltage and supply frequency and the mutual flux , that's right or what ?
17:27 R_cL = (k^2) R_cH not (k^2) R_cL
🤩❣️
I have been watching your videos from past one week now.. and I m Seriously shocked about your views.. you seriously deserve alot of veiws.
Thank you sir for these videos.. 🙏😊
You share the videos in your WhatsApp groups etc...
@@ElectricalisEasy sir already shared. My friends have also seen your videos and they all are happy as your videos help them to solve their concepts 😊
@@bhavanagupta1230 thank you for sharing...unless the video is shared it will not reach a wider audience
@@ElectricalisEasy sir thanks to you.. because you are providing these lectures
for free. Thank you sir 🙏
sir. why didn't we take v1= Im x Rc for calculating Rc value?
Great video, keep up the great work!
Sir,
How can we perform the open circuit and short circuit test of a three phase transformer?
Should we connect only a single phase supply to one of the three phases of the transformer, carry out the test like a single phase transformer? Or do we supply all the three phases, use two wattmeter method to measure power and do some fancy calculations? Please help me out, I'm going nuts.
17:26
Rc and Xphi variables are wrong
AJ HUNTER how is it wrong?
@@ElectricalisEasyit should be 'rch' and 'xphih'
You have written 'L' instead of 'H'
Sir
If I1 is so small that we neglect copper loss I1^2 r1 then Ic is smaller than I1. Why don't we neglect Core loss I^2 * rc then?
This point is driving me crazy no matter how many books i search.
the core losses are actually flux dependent, so ina way they are voltage and frequency dependent, that is why in the eqyivalent circuit and in numericals you will see the value of Rc is much much higher then r1 or r2, so that power loss cannot be neglected...this is why i ask to look numericals closely to get the feel of the values involved
So the experimental result must contain copper loss also. Though at 5% of full load current. That loss will be current dependent. So resull will vary accordingly.
@@chanakyasinha8046 yes..
Sir, will you upload lectures on power system analysis
how will Ammeter measure Im? wasn't it supposed to measure I1? As I1 branches out into Im and Ib.
I think I use Im to represent the noload current sometimes, but let me check and get back to you...
No load current which passes through excitation branch is Im. In this case, only no load current exists as there is an open circuit at the load. Therefore I1=Im
@@janu203 thanks👍
Who tf is giving dislikes to these amazing lectures!!! Your videos are really awesome and I always share them with my friends!!