Phasors

Network Theory: Phasors
Topics discussed:
1) Definition of Phasor.
2) Basics of Complex Numbers.
3) Getting the idea of phasor representation.
4) Example of the phasor.
5) Phasor plot.
6) Conditions for phasor analysis.
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Music:
Axol x Alex Skrindo - You [NCS Release]

[@keen2461]

Excellent video. Thanx for taking the time to explain this topic so clearly.

[@SumoTheUltimateTraveller]

Sir plz start a lecture series on communication engineering and EMFT. I only understand your teaching. Others do not have quality any near to that of yours.

[@Bright-Minds-001]

"Empower the world with your spark of innovation, and let the current of your passion illuminate the path to a brighter, electrifying future in electrical engineering."

[@ramagirirajesh1030]

Yah you are explanation is deep into the basics sir

[@meenarawat5054]

excellent video...and such an easy explanation

[@prabalbhardwaj1829]

very nicely explained

[@tahirbintariq8934]

Well described sir

[@gopalshukla4471]

Nice video... finally you uploaded after long time.....keep going n please complete series as soon as possible

[@hasancansert180]

Hocam ağzınıza sağlık bir bok anlamadık ama teşekkür ederiz. Hacettepe Elektronikten bu videoya gelen yarışmacı arkadaşlara başarılar dilerim

[@saranshgupta9119]

हाँ बिलकुल सही कहा आपने।

[@DEEarmanakbar]

@@saranshgupta9119 welcome to Feku country.

[@erdemovski.]

Biz ytüden geldik aslan

[@chAD6969]

U r dumb

[@KasunIshara]

Nice explanation..

[@wimblegames]

Hello sir. This channel needs Data Communicaton and Computer Network classes for ComputerScience I think.

[@abhilashpalei4266]

Thank you so much sir

[@anmolrajsingh7637]

Please make a video on Rc phase oscillator

[@manoaravind9830]

Cannot go to next video without appreciation :)

[@jitendrasingh-ey4gr]

Thank you sir.. Please increase speed of upload sir....

[@emc2knowledge999]

What is the need to suppress the time component....?

[@MrRiceroni]

I think because in all practical applications the frequency (w) is the same throughout so it can be ignored.

[@muckleyoftrisfal7838]

As electrical engineers we usually work with LTI's (linear time invariant systems). For any such system all exponential functions are eigenfunctions (meaning the output will be the same exponential, only scaled by a certain eigenvalue). Considering that whatever signal you give this system can be represented as a sum of sinusoids/exponentials, it is better to study only the things that change. That is to say, omega will never change, the only things that can change about a signal by passing it through a system is amplitude and phase.

[@sohamagarwal5809]

@@MrRiceroniYes

[@anoohyaveerapaneni9795]

where are the other videos of locus ,magnetic circuits ,resonance?

[@successismine9891]

❤️ur voice is so good sir

[@wediadi6788]

Fantastic

[@AliMohamed-zi9dw]

Pro tip: play at 1.25 speed

[@pushkal8800]

I play at 2x very nice😊

[@varshapaliwal7464]

Sir please make a vedio on phase and phase difference

[@sapankushwaha4069]

Shandar!!!!!!!

[@Luciano-hm8zy]

very helpful, it's a good thing to know the roots of the formulas.

[@mohfa1806]

Thank you fir your great educational video... But i still can not understand on what bases we can simply supress e^(jwt) to 1?.. Thank you in advance

[@simone5442]

Hi, in a AC linear circuit, every component has the same sinusoid and the same "w", therefore you can suppress it to operate with phasors (complex numbers, since they are much easier to manipulate).

[@belwizdadimed3967]

explain why you re suppressing the time component when identifying vt expression with Euler's formula

[@alphasatari]

We do phasor analysis only when we have constant frequency. The time exponential component is implicitly present. Actually, it is the only thing responsible for phasor rotation at a constant angular frequency “ω”. Let’s take an example, V(t)=VmCos(ωt+ϕ) If we convert it in exponential form we’ll get, V=Vm.e^(ωt+ϕ) V=Vm.e^(ϕ).e^(ωt) e^(ωt) is responsible for phasor rotation in phasor domain. Just like the animation we’ve seen in this video. We neglect it for simplicity or to get the form of polar complex number. Suppressing it will not affect our results. If we again convert exponential form to time domain we’ll get, V(t)=VmCos(ωt+ϕ) It’s for our understandings. Since we’re only dealing with real part of Euler’s equation. This is also true when we’re working with imaginary part.

[@belwizdadimed3967]

Yash Raj no. the reason is we can only do phasor analysis (lagging/leading) for entities rotating at the same speed(ω). Hence, the rotating factor is irrelevent (since we're in a situation where all signal speeds are the same).

[@theyammi437]

At least that explanation uses phi over theta.

[@mwenge6355]

What is suppressing the time component

[@aditikumari3677]

U said that phasor represents amplitude and phase angle but why phasor is a complex number why can't we represent the amplitude and phase of a wave with a real number?

[@seikhsadisiam3534]

If we express amplitude and phase angle of an alternating signal by real numbers, sometimes it will be more clumsy and lengthy.For example,if we want to calculate the resultant amplitude and phase of two or more alternating signal then by using trigonometric functions it will be more difficult to us, that's why phasors is an important tool for us to calculate amplitude and phase of alternating signal.

[@ronycb7168]

How can we say v(t) is the real part only??

[@ravivarma3800]

sir Why we are suppressing time component ?????

[@omarzouiten4006]

same question here lol

[@AryanRaj-zw7xj]

Phasor is time dependent quantity ??

[@saranshgupta9119]

Phasor is a complex no used to represent sinusoidal functions whose amplitude, phase and angular frequency are independent of time.

[@mdparwezalam8456]

Why we need phasor

[@user-zm6pd9eg6y]

Play at ×1.75 for better understanding.

[@kiruthieekparanitharan5263]

Sir inga oruthan onga video vechu dhan class eduthutu irukan

[@sanjai_rs7]

🤣

[@qaz1234ism]

angular frequency means what sir

[@rishnakkumar1066]

It is i not j. i stands for iota

[@simon-gh1pt]

In electrics we takes 'j' to explain imaginary quantity as 'i' represents current :)

[@theyammi437]

I am so used to using i, but the reason for substituting j makes perfect sense.

[@aswineepratihari7897]

10:40

[@plekkchand]

Not "called as phasor", but "called A phasor".