Visit ilectureonline.com for more math and science lectures! In this video I will explain how to add voltages by converting to phasor format. Next video in this series can be seen at: • Electrical Engineering...
Пікірлер: 170
@lupitaramirez72234 жыл бұрын
so we’re not gonna talk about how this man is teaching us voltage with little Pickachu in the corner 🥺
@ComputerEngineeringCPE3 жыл бұрын
Awesome explanation, thank you for going over each step and not skipping anything!
@MichelvanBiezen3 жыл бұрын
You're very welcome!
@aniketlahiri82962 жыл бұрын
Thankoyu very much.. I was trying to understand it for 2 days but no teacher was so clear like you sir during explanation.. U helped me.. Thxx
@MichelvanBiezen2 жыл бұрын
Glad this was helpful.
@meghanamr38765 жыл бұрын
I have gone through many videos but I was not able to grasp it.Only with this video,I have got grip on this topic.Really helpful.
@MichelvanBiezen5 жыл бұрын
Glad you found these videos.
@tempestandacomputer69512 жыл бұрын
Best explanation I have seen with clear use of formulas for each step.
@MichelvanBiezen2 жыл бұрын
Glad it was helpful!
@loverboy17605 жыл бұрын
Thank you so much sir. GOD BLESS YOU.
@MichelvanBiezen5 жыл бұрын
Thank you.
@vidarfreyr4 жыл бұрын
Really good explanation. Just the practicalities, and no BS. Thanks a million!
@MichelvanBiezen4 жыл бұрын
You're welcome!
@irritantno94 жыл бұрын
You are my surrogate professor. It's so clear when you explain it.
@MichelvanBiezen4 жыл бұрын
Thank you for your comment. Glad to help.
@dtoogentle4 жыл бұрын
Thank you so much Sir, i couldnt get this when i saw it in my textbook not on till i watched this life saving video. once again thanks
@leonvisters5348 Жыл бұрын
Great video. Do we need to to add 180 after finding the phase angle thru tan-1?
@MichelvanBiezen Жыл бұрын
Typically the phase angle is expressed in values of cos between -90 and + 90 degrees.
@giftkabwe42815 жыл бұрын
youre really the best, your explanations are precise and accurate
@elta80642 жыл бұрын
Thanks for the explanation. And I just wanted to ask what would we do if we had different frequencies in the different voltages. would you just take the average ?
@MichelvanBiezen2 жыл бұрын
Then you would use the superposition principle. Use each frequency to calculate the current and voltage and then add them (making sure you take the different phases into account)
@arnavverma86225 жыл бұрын
Sir your explanation is marvelous 🙏🙏🙏🙏
@poojashedge18572 жыл бұрын
Thank you sir your explanation process is too good 🙏 now I able to solve numericals like this...
@MichelvanBiezen2 жыл бұрын
Great! Glad it helped.
@sandeeptiwari36554 жыл бұрын
*In short and less time....you do good work*
@mortenandersen61085 жыл бұрын
Fantastic explanation!!
@TheSunnyprakash5 жыл бұрын
Excellent.It's very helpful to below average student.Thanks a lot Sir.
@DREAM-lt7cq2 жыл бұрын
Thanks sir.. love from India 🇮🇳🇮🇳🇮🇳🇮🇳
@MichelvanBiezen2 жыл бұрын
Thank you and welcome to the channel!
@Luke-vo1sf2 жыл бұрын
Thank you, this makes so much more sense than what my professor did
@MichelvanBiezen2 жыл бұрын
Glad it was helpful! 🙂
@albertfiagbor522 жыл бұрын
Please so always when the phase angle is negave you have to convert it to positive first before it can be added when it's sine function we should always add 180 and when its's cosine function we should substract 90?
@MichelvanBiezen2 жыл бұрын
Not necessarily. Wen you start adding voltages and currents with phase angles it sometimes makes it easier to add or subtract 180 degrees with either the sine or cosine functions. (Usually we use the cosine function).
@bowlineobama Жыл бұрын
Can you also convert it to Sine as well and work the same way? Why did you chose Cosine?
@MichelvanBiezen Жыл бұрын
Cosine is used by convention, but yes, you could use the sin function.
@aaagwz4 жыл бұрын
Its today that I appreciate more the application of complex numbers.
@kunalgaikwad27582 жыл бұрын
Thank you sir love from India🇮🇳🇮🇳
@MichelvanBiezen2 жыл бұрын
Thank you and welcome to the channel! 🙂
@Hot-Introduction5 жыл бұрын
It's probably too late to ask but Can we directly convert -sin(wt-30) to positive cos by adding -90 -sin(wt -30-90) =cos(wt-120) Instead of converting it to positive sin and then to positive cos.
@MichelvanBiezen5 жыл бұрын
You can do it in any order. It is always a good idea to check. Is - sin(30) = + cos (30 - 90) ?
@10.gauravjungkarki693 жыл бұрын
damn this is so simple but all my professor did, was made this thing complicated. thank you so much sir!!
@MichelvanBiezen3 жыл бұрын
Yes, once you see it, it becomes pretty straight forward :)
@miguellopes99592 жыл бұрын
Able to explain a matter that I couldn't perceive until now, thank you
@MichelvanBiezen2 жыл бұрын
You are welcome. Glad you found our videos. 🙂
@mithunroy655 жыл бұрын
Thank you, sir. Your every tutorials is very important to me but your video scene isn't clear. so, please please please make it clear so that We can see easily and learn more and more from your tutorials.
@MichelvanBiezen5 жыл бұрын
Are newer videos are filmed in high definition, and there is a setting on KZbin when you watch videos, that can increase the resolution of your screen.
@unfinishedgenius37916 жыл бұрын
Soo helpful, thank you.
@xfpollux3218 Жыл бұрын
May I know why must it be converted into cos but not sin? or it can only be solved by cos?
@MichelvanBiezen Жыл бұрын
Cosine is used by convention since it is easier to calculate the resistance and reactance using the cosine.
@ikshvaku_allegiance40152 жыл бұрын
Sir why do we need to divide Vmax by sqrt(2) when converting from time to phasor
@MichelvanBiezen2 жыл бұрын
The average voltage is equal to Vmax / sqrt(2), since the voltage is a sin curve. That is the mathematical result of the relationship between the average value and the peak value of a sin curve.
@theshadypersonify Жыл бұрын
can someone please explain why I get 12.3906i when I plug this into my ti89 calculator keeping the sin and cos fucntions with i kept on the sins? Like this sqrt( (10cos(60) + 20cos(45))^2 + ((i20sin(45))+(i10sin(60)^2 )
@MichelvanBiezen Жыл бұрын
Do you have your calculator in radian mode instead of degree mode?
@Markidoo3 жыл бұрын
will there be a case wherein we will use V_maxsin(wt+theta) instead of V_maxcos (wt+theta)?
@MichelvanBiezen3 жыл бұрын
Traditionally we always use the cos. But we could use the sin and mathematically that is not incorrect.
@ranbirrobin39404 жыл бұрын
thank you so much sir...I found your tutorial very helpful for me
@MichelvanBiezen4 жыл бұрын
You are most welcome
@carllacoste58243 жыл бұрын
why the book that I bought is not the same as your answer. The answer to that practice problem is not the same as your answer. Is there some kind of typo in the book?
@MichelvanBiezen3 жыл бұрын
Probably either myself or the book made an error. (most likely me, although viewers tend to be quick to point out the error).
@faizmalik92104 жыл бұрын
Using different labels for the voltages in the time domain and in the phasor domain would greatly help minimise the confusion.
@rjh56711 ай бұрын
Liked and subscribed! Excellent explanation sir.
@MichelvanBiezen11 ай бұрын
Thank you. Glad you found our videos. 🙂
@rebornthereborned5 жыл бұрын
Can I take your class? >.
@UTube40756 жыл бұрын
Thank You very much sir, May God Bless You
@thedillestpickle6 жыл бұрын
Does it matter if we get an angle greater than plus or minus 90? Do we then subtract 180 degrees and use that value?
@MichelvanBiezen6 жыл бұрын
Typically that is what is done.
@notSavant6 жыл бұрын
What about A*cos(wt)+B*sin(wt)=C*cos(wt+phi)?
@swedensur91062 жыл бұрын
excellently explained and so straight forward. so much better than my lecturer, also love the bowtie!
@MichelvanBiezen2 жыл бұрын
Thank you. Glad you found our videos. 🙂
@ralphramsey824 жыл бұрын
Thanks for taking the time to explain this.
@PTNLemay3 жыл бұрын
My teacher often writes the phasor form as something like (taking the 10 sin(...) function from your example) 10*e^(j*30). Is there a term for this other kind of phasor that uses the Euler number and imaginaries? I think it's something like the "analytic representation" of the phasor, but I'm not sure.
@MichelvanBiezen3 жыл бұрын
It is just a different mathematical representation, but it means the exact same thing.
@PTNLemay3 жыл бұрын
@@MichelvanBiezen I see, thank you
@ronaldrosete40864 жыл бұрын
Is it posible to add 2 phasors with different frequencies? New subscriber here.
@MichelvanBiezen4 жыл бұрын
You would typically not expect to see that in a circuit, but yes, it can be done. Here is a video (on mechanical waves) that describes how to add them. Physics - Mechanics: Mechanical Waves (11 of 21) The Interference of Waves (Same Direction) in the playlist: PHYSICS 19 MECHANICAL WAVES
@ronaldrosete40864 жыл бұрын
@@MichelvanBiezen Wow. Thanks a lot. You deserve millions of subscribers. I wish I could be as smart as you. Thanks again!
@sangeethars83265 жыл бұрын
Why we took them in cosine form? Could I use sine form?
@MichelvanBiezen5 жыл бұрын
This is just an exercise to add these two voltages together. From a mathematical perspective it doesn't make any difference. From a convention, we tend to use cosine
@savidudasanayaka47593 жыл бұрын
Thank you so much. Definitely subscribing and suggesting you to my friends.❤️❤️❤️
@MichelvanBiezen3 жыл бұрын
Thank you. We appreciate the support.
@The.Talent6 жыл бұрын
If I wanted to represent the resultant as in the form of Asin(wt+phi) could I then simply convert what you have shown by adding 90degrees to phi? i.e. Acos(wt+phi) = Asin(wt+phi+90)
@MichelvanBiezen6 жыл бұрын
Yes you can do it that way.
@The.Talent6 жыл бұрын
Thank you so much for a quick reply!
@nepalji21236 жыл бұрын
Awesome awesome awesome awesome awesome.... Y are best .....
@sanjayn64484 жыл бұрын
THANK YOU SO MUCH SIR!! THAT WAS VERY HELPFULL,
@leechaeyeon16773 жыл бұрын
hello, sir. thank you so much for this video! It's really helped meeee thank youu🙏🙏🙏 god bless you always!
@MichelvanBiezen3 жыл бұрын
You are very welcome
@avarun314 жыл бұрын
Sir, are we using rotation by j concept and converting the negetive vector v(t) = -10sin(wt-30) to positive vector . Since we multiply by j^2, are we adding 180 degrees and it becomes v(t)=10sin(wt+30+180) = 10sin(wt+210)?
@丅-k3r2 жыл бұрын
i have the same question 😥
@madhavbovilla73636 жыл бұрын
I like this very much tq professor
@MShazarul4 жыл бұрын
What about addition of two term where one of the term does not have an angle, so how do we calculate the arc tan then? (One term has phi, the other does not)
@MichelvanBiezen4 жыл бұрын
It makes no difference. Think of it as an angle of zero. The calculation will be exactly the same.
@aaagwz4 жыл бұрын
It's very helpful. Thank you Sir.
@MichelvanBiezen4 жыл бұрын
You are most welcome
@tusharsaini44465 жыл бұрын
Thank you so much sir
@sreyamukherjee52095 жыл бұрын
This is so helpful. ....thank you sir
@otsutsukiboruto88332 жыл бұрын
Hello Sir when I try this method with my example i just get weird answers for some reason 𝑢1 = 4 ∙ cos(3𝑡 − 1) 𝑢2 = 6 ∙ cos(3𝑡 + 1.1) if anyone could help me that would be appreciated Thanks in advance
@MichelvanBiezen2 жыл бұрын
Note that the phase angle needs to be converted to radians (not degrees) and your calculator needs to be in radian mode.
@otsutsukiboruto88332 жыл бұрын
@@MichelvanBiezen Could you explain more please ..
@anjumzahoor89566 жыл бұрын
Can we show how to Add 3 voltages and what if any 1 Voltage does not have an angle with it like V1=10sin(wt) V2=15sin(wt+45) V3=20cos(wt-60)
@MichelvanBiezen6 жыл бұрын
Convert each to the real and imaginary parts and then add the real part together and then the imaginary parts. (you are adding 3 instead of 2, but the technique is identical)
@anjumzahoor89566 жыл бұрын
Michel van Biezen but we don't have any angle associated with one voltage what happens to that voltage... That is V1=10sinwt
@MichelvanBiezen6 жыл бұрын
The phase angle is zero therefore v1 = 10 + j0
@JoshuaWGbuah4 жыл бұрын
Very clear and thanks
@deepsheth80054 жыл бұрын
Awesome😎👍🏻
@Mbilal0193 жыл бұрын
a. If v1= -20sin (wt - 600) and v2 = 20sin( wt + 450); find v1 + v2 =?
@Mbilal0193 жыл бұрын
Kindly solve this
@SaqibAli-iq8cv5 жыл бұрын
Thank you so much
@preciousa.43843 жыл бұрын
-10sin(wt - 30), shouldnt it be -10cos(wt +30) ?, the negative sign in front of Vmax is missing????
@jegedeprecious76623 жыл бұрын
He changed the sign of the amplitude. You need to add 180° to the phase angle before you can change the amplitude's sign
@sylvesterfolivi96213 жыл бұрын
God bless you sir....
@MichelvanBiezen3 жыл бұрын
Thank you
@rickshafer66886 жыл бұрын
Hello!Thank you for the great tutorials!You explain everything so well and comprehensively. I wanted to know if there is an e.e. textbook that you would recommend.Thanks again !Sincerely , Rick Shafer
@lucasnikodemus88134 жыл бұрын
Thank you so much!
@feelthemusic56126 жыл бұрын
very helpful
@marc-stephenpierre85224 жыл бұрын
Thank you Sir,Helped a lot
@MichelvanBiezen4 жыл бұрын
Glad it helped
@333r25 жыл бұрын
Thanks sir ji
@malkarr24515 жыл бұрын
Thanks i understood everything
@ventsolutions43276 жыл бұрын
GOD BLESS YOU.
@srhodes8185 жыл бұрын
Gotta love this man! Thanks sir :)
@kuldeepdubey90554 жыл бұрын
But sir we consider equations in sine in ac
@MichelvanBiezen4 жыл бұрын
Typically we use the cos function. This is just for an exercise in case we need to know how to do this.
@priyankatripathi97655 жыл бұрын
2√2 cos(2t+45)+2 sin(2t)= ?
@chiragjain42346 жыл бұрын
Michael sir please make more lectures on astronomy
@MichelvanBiezen6 жыл бұрын
That is the plan eventually, we are currently covering more of the electrical engineering and calculus.
@vinifftl3 жыл бұрын
Muito obrigado!
@McDunzo5 жыл бұрын
This is so clutch.
@sunainakumari51703 жыл бұрын
Thank you sir
@MichelvanBiezen3 жыл бұрын
Welcome
@derwinara35614 жыл бұрын
Thank you Sir!
@tadehmirzakhanian8935 жыл бұрын
love it thank you! and thanks for the bow tie :D
@zebulinjones61362 жыл бұрын
Why not divide by sqrt 2?
@MichelvanBiezen2 жыл бұрын
The video shows you one technique. Have you tried a different technique? Did you get the same answer?
@zebulinjones61362 жыл бұрын
@@MichelvanBiezen Yes, I tried both out and get the same answer.
@MichelvanBiezen2 жыл бұрын
Excellent. That is how you get a full understanding.
@bassemghorab5 жыл бұрын
Thank you
@tristanvanzyl5957 Жыл бұрын
n vet like vir jou my boytjie
@MichelvanBiezen Жыл бұрын
Glad you liked it. 🙂
@sasidharasarma86254 жыл бұрын
You’re just making dumb things more interesting by the way you teach 😇
@sivanshlmao5 жыл бұрын
helpful af. thanks man. :)
@nvfpv4 жыл бұрын
legend
@AM-bk2pe4 жыл бұрын
thank you!!!
@__shubham_raj5 жыл бұрын
Thank u sir
@arijeetboni69226 жыл бұрын
What if we have four values
@MichelvanBiezen6 жыл бұрын
Convert all 4 to the real and imaginary part format. Add all (4) real parts together and add all (4) imaginary parts together, then the rest is the same.
@kristoffergaard86486 жыл бұрын
Did you make a mistake with you signs at 1:00? sin(wt-90)= - cos(wt). You should have added 90 degrees to get a positive cosine function. Please verify, Thanks.
@MichelvanBiezen6 жыл бұрын
I don't see a sin(wt-90) at 1:00.
@THEMSQUAREINDIA3 жыл бұрын
thank u
@MichelvanBiezen3 жыл бұрын
You're welcome!
@preciousbamidele87612 жыл бұрын
i think it is mearnt to be -180 not +180
@MichelvanBiezen2 жыл бұрын
-180 and + 180 is the same thing.
@Deleted_123245 жыл бұрын
This is learned in class 8 in India In which class do you read?
@vidit90245 жыл бұрын
Shut up bastard. Stop mocking. This is taught in 1st year college
@Timebomb10105 жыл бұрын
imma kiss ya bowtie guy you are saving my butt
@procerpat9223 Жыл бұрын
priceless
@MichelvanBiezen Жыл бұрын
Glad you like our videos. 🙂
@anjumzahoor89566 жыл бұрын
Please help in my case I am a bit dumb
@31.prathameshwaghmare954 жыл бұрын
😂
@NIKAHMADFARIED. Жыл бұрын
I'm glad to found your video!🤌💞
@MichelvanBiezen Жыл бұрын
Welcome aboard! We are still actively adding to the EE videos and plan on covering all the topics.