- 193
- 203 644
Gargi Basu
India
เข้าร่วมเมื่อ 22 ส.ค. 2020
An introduction to Electrical Circuit and Networks
Probs on Load voltages & Line currents for Y-connected Unbalanced Load using Millman’s theorem-I
On completion of this lecture, learners will be able to determine the neutral shift voltage applying Millman's theorem for a star connected unbalanced load fed from a symmetrical 3-phase, 3-wire AC supply. They will also learn how to compute load voltage and line currents using this value of neutral shift voltage.
มุมมอง: 153
วีดีโอ
Numerical problems on NEUTRAL SHIFT VOLTAGE for Y-connected Unbalanced Load using Millman’s theorem
มุมมอง 151ปีที่แล้ว
On completion of this lecture, learners will be able to determine the neutral shift voltage using Millman's theorem for a star connected unbalanced load fed from a symmetrical 3-phase, 3-wire AC supply.
Problems on Load power for Y-connected Unbalanced Load using Mesh Current Analysis method (PART-I)
มุมมอง 116ปีที่แล้ว
On completion of this lecture, learners will be able to determine line currents for a star-connected unbalanced load fed from a symmetrical 3-phase, 3-wire AC supply using mesh current analysis method. They will also be able to compute total power consumed by this load using these values of line currents.
Assorted problems on Unbalanced 3-phase, 3-wire, star-connected load Part-I
มุมมอง 70ปีที่แล้ว
On completion of this lecture, learners will be able to determine the line currents, the load voltages,the load impedances or the neutral shift voltage when a star-connected unbalanced load is connected across a symmetrical 3-phase, 3-wire AC source.
Assorted problems on Unbalanced 3-phase, 3-wire, star-connected load Part-II
มุมมอง 87ปีที่แล้ว
On completion of this lecture, learners will be able to determine the line currents, the load voltages,the load impedances or the neutral shift voltage when a star-connected unbalanced load is connected across a symmetrical 3-phase, 3-wire AC source.
Assorted problems on Unbalanced 3-phase, 3-wire, star-connected load Part-III
มุมมอง 209ปีที่แล้ว
On completion of this lecture, learners will be able to determine the line currents, the load voltages,the load impedances or the neutral shift voltage when a star-connected unbalanced load is connected across a symmetrical 3-phase, 3-wire AC source.
Numerical probs on Line currents for Y-connected Unbalanced Load using Mesh Current Analysis method
มุมมอง 103ปีที่แล้ว
On completion of this lecture, learners will be able to determine line currents of a star-connected unbalanced load fed by a symmetrical 3-phase, 3-wire AC source using mesh current analysis method.
1st numerical problem on Overall Efficiency & Shaft Torque using Approximate Equivalent Circuit
มุมมอง 372ปีที่แล้ว
On completion of this lecture, learners will be able to compute overall efficiency and shaft torque of a three phase induction motor using approximate equivalent circuit when values of per phase circuit parameters are given.
4th numerical problem on: Overall Efficiency & Shaft Torque using Approximate Equivalent Circuit
มุมมอง 255ปีที่แล้ว
On completion of this lecture, learners will be able to compute overall efficiency and shaft torque of a three phase induction motor using approximate equivalent circuit when values of per phase circuit parameters are given.
A pair of numerical problems on Gross Efficiency & Developed Torque using Approx Eq Ckt (Part-III)
มุมมอง 163ปีที่แล้ว
On completion of this lecture, learners will be able to compute gross efficiency and developed torque of a three phase induction motor using approximate equivalent circuit when no load current and values of per phase circuit parameters are given.
A pair of numerical problems on Gross Efficiency & Developed Torque using Approx Eq Ckt (Part-II)
มุมมอง 163ปีที่แล้ว
On completion of this lecture, learners will be able to compute gross efficiency and developed torque of a three phase induction motor using approximate equivalent circuit when no load current and values of per phase circuit parameters are given.
A pair of numerical problems on Gross Efficiency & Developed Torque using Approx Eq Ckt (Part-I)
มุมมอง 157ปีที่แล้ว
On completion of this lecture, learners will be able to compute gross efficiency and developed torque of a three phase induction motor using approximate equivalent circuit when no load current and values of per phase circuit parameters are given.
A pair of numerical problems on Gross Output Power & Gross Efficiency using Approximate Eq. Circuit
มุมมอง 1632 ปีที่แล้ว
On completion of this lecture, learners will be able to compute gross efficiency and gross output power of a three phase induction motor using approximate equivalent circuit when no load current and values of per phase circuit parameters are given.
A pair of problems on Overall Efficiency & Shaft Torque using Approx Eq. Circuit (NL current given)
มุมมอง 1422 ปีที่แล้ว
On completion of this lecture, learners will be able to compute overall efficiency and shaft torque of a three phase induction motor using approximate equivalent circuit when no load current and values of per phase circuit parameters are given.
A pair of numerical problems on Output Power & Overall Efficiency using Approx Eq. Ckt (Part-II)
มุมมอง 1612 ปีที่แล้ว
On completion of this lecture, learners will be able to compute overall efficiency and output power of a three phase induction motor using approximate equivalent circuit when values of per phase circuit parameters are given.
A pair of numerical problems on Output power and Overall efficiency using approx eq. ckt. (Part-I)
มุมมอง 1692 ปีที่แล้ว
A pair of numerical problems on Output power and Overall efficiency using approx eq. ckt. (Part-I)
3rd numerical problem on Overall Efficiency & Shaft Torque using Approximate Equivalent Circuit
มุมมอง 1612 ปีที่แล้ว
3rd numerical problem on Overall Efficiency & Shaft Torque using Approximate Equivalent Circuit
2nd numerical problem on Overall Efficiency & Shaft Torque using Approximate Equivalent Circuit
มุมมอง 1752 ปีที่แล้ว
2nd numerical problem on Overall Efficiency & Shaft Torque using Approximate Equivalent Circuit
7th numerical problem on Overall Efficiency & Shaft Torque using Exact Equivalent Circuit
มุมมอง 1782 ปีที่แล้ว
7th numerical problem on Overall Efficiency & Shaft Torque using Exact Equivalent Circuit
3rd numerical problem on Overall Efficiency & Shaft Torque using Exact Equivalent Circuit
มุมมอง 2222 ปีที่แล้ว
3rd numerical problem on Overall Efficiency & Shaft Torque using Exact Equivalent Circuit
2nd numerical problem on Overall Efficiency & Shaft Torque using Exact Equivalent Circuit
มุมมอง 1712 ปีที่แล้ว
2nd numerical problem on Overall Efficiency & Shaft Torque using Exact Equivalent Circuit
4th numerical problem on Overall Efficiency & Shaft Torque using Exact Equivalent Circuit
มุมมอง 1432 ปีที่แล้ว
4th numerical problem on Overall Efficiency & Shaft Torque using Exact Equivalent Circuit
6th numerical problem on Overall Efficiency & Shaft Torque using Exact Equivalent Circuit
มุมมอง 1962 ปีที่แล้ว
6th numerical problem on Overall Efficiency & Shaft Torque using Exact Equivalent Circuit
1st numerical problem on Gross Efficiency & Developed Torque using Exact Equivalent Circuit
มุมมอง 2732 ปีที่แล้ว
1st numerical problem on Gross Efficiency & Developed Torque using Exact Equivalent Circuit
1st numerical problem on Overall Efficiency & Shaft Torque using Exact Equivalent Circuit
มุมมอง 3682 ปีที่แล้ว
1st numerical problem on Overall Efficiency & Shaft Torque using Exact Equivalent Circuit
5th numerical problem on Overall Efficiency & Shaft Torque using Exact Equivalent Circuit
มุมมอง 6712 ปีที่แล้ว
5th numerical problem on Overall Efficiency & Shaft Torque using Exact Equivalent Circuit
Medium Transmission Line: TeqCkt: 3rd prob on determination of ABCD consts and Voltage Regulation
มุมมอง 2172 ปีที่แล้ว
Medium Transmission Line: TeqCkt: 3rd prob on determination of ABCD consts and Voltage Regulation
Medium Transmission Line: TeqCkt: 2nd prob on determination of ABCD consts and Voltage Regulation
มุมมอง 1122 ปีที่แล้ว
Medium Transmission Line: TeqCkt: 2nd prob on determination of ABCD consts and Voltage Regulation
Medium Transmission Line: Pi Eqv. Circuit: 2nd Prob on Voltage regulation & Transmission Efficiency
มุมมอง 1172 ปีที่แล้ว
Medium Transmission Line: Pi Eqv. Circuit: 2nd Prob on Voltage regulation & Transmission Efficiency
Medium Transmission Line: PiEqCkt: 3rd prob on determination of ABCD consts, REGULATION & EFFICIENCY
มุมมอง 892 ปีที่แล้ว
Medium Transmission Line: PiEqCkt: 3rd prob on determination of ABCD consts, REGULATION & EFFICIENCY
Very informative
thank you!
Can we for example use milman teorem to solve this problem, for check is that correct
of course
@gargibasu5111 tnx for answer
Thanks ma'am very helpful❤❤❤❤❤❤❤❤
Glad to be useful.
Ma'am I have a doubt in problem number 5. Yaha par aapne shunt field winding ke loss ko kyo nhi calculation me consider Kiya. Jab total power loss calculate Kar Rahi thi
Shunt field winding loss is a part of constant losses Pc, which is already determined under no load condition.
@gargibasu5111 okay ma'am thank you
mam how you are calculating Torque angle
it's angle between induced emf Eo and terminal voltage Et
Thanks for video very understanding
Glad you found it helpful!
Very helpful even now ❤❤❤ thank you
Glad it was helpful!
20:53 why |I2s| equation is different than previous math |I2s|= sE2s/|Zr|?
Here external resistance is inserted in the rotor circuit.
The load current 218.7 A is incorrect since the equation is missing the cos(theta) in the denominator. The calculation P/sqrt(3)*V_LL*cos(theta) = 50000000/sqrt(3)*132000*0.8=273.37A
thanks for the correction
Α 220-V, 3φ voltage is applied to a balanced delta- connected 30 load of phase impedance (15 + j20) Ω (a) Find the current in each line. (b) What is the power consumed per phase? (c) What is the phasor sum of the three-line currents? Why does it have this value?
impedance, Z=15+j20=25 ohm\angle 53.13^o per phase current Iph=220/25=8.8A Line current IL=sqrt(3)*Iph=15.24A per phase power=Iph^2*real(Z)=8.8^2*15=1161.6W Total power=3*1161.6=3484.8W Phasor sum of three line currents equals to zero. Since line currents are balanced i.e. equal in magnitude and 120^o apart.
Thanks mam
Keep watching
It was really amazing, thank you so much.
Glad you liked it!
Thank you very much u saved me
Thanks for watching. Glad to help you.
Why there is minus in the last expression of generated emf???
I could not get you. Sorry:(
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Nice lecture 👍
Thanks for liking
You are a life saver and you gave excellent explanation, thank you very much ma'am
Thanks:) Keep watching.
Slip 3% How
Slip=(Ns-Nr)/Ns
@@gargibasu5111 0.03 ata hai percentage
good✌️
Thanks for liking
Hi mis Gargi❤❤❤
Hello
@@gargibasu5111 your so cute mis gargi💋💋❤️❤️🤣
❤
Keep watching!
❤❤❤nice video mem thnk you so much❤
Most welcome . Keep watching!
thank you mam
Most welcome 😊. keep watching.
Wow you are so interesting teacher tank you very much
Glad you think so!
Wow you are so interesting teacher tank you very much
You are very welcome
mam, the speed at which the alternator runs, is it ns or nr or what's the kind of the speed, thanks very much
Induction motor and generator both run at speed Nr. Synchronous generator runs at speed Ns
Thank you ma'am because of this I am able to solve more problems like this.
you are most welcome. Keep watching!
Great job 👍 mam 💯
Thanks a lot
Keep watching!
Helpful
Glad you think so!
Good collections of questions Madam.
Glad you liked it
Mu se supari nikal ke baat kr re baba
bohot kush sikha thanks a lot ❤
Thanks for watching!
Really awesome mam
It's my pleasure
Mam apki videos bahut helpful hai
Glad to be helpful. Thanks for watching.
good job mam
It's my pleasure
Why have you used radius to calculate the circumference in problem 2 that's wrong
I have not used radius. The total circumference=pi*D. since two materials are used, that's why pi*D/2 expression is used to determine length of magnetic circuit for each material.
Very helpful thanks mam ,from Bd
Most welcome 😊
Thankyou sooo muchhhhh i am literally crying. Thankyou plz keep making more of such vids. Very helpful. Thankyou so much.
Most welcome 😊
Very useful 🎉
Glad you think so!
hi , like this vedios of single phase tranformer , i need for 3 phase tranformer also .
there is one on parallel operation of 3-ph transformers
But why 400V = V1?
I used subscript 1 for high voltage winding and 2 for low voltage winding
Very nice & helpful 👌👌 Thank you ma'am!!
Thanks for liking. Keep watching!
Nice explanation mam with problem 👍
Thanks for liking
I can't find what I'm searching
Sorry about that. What are you searching for?
hello madam but when your solving synchronous speed my madam told me the formula is Ns is equal f/p not 120f/p why
If Ns is measured in revolutions per second then Ns=2f/P If Ns is measured in revolutions per minute then Ns=120f/P
if only no of slot, coils and turns per coil is given: how to procure Zc, Z and T?
check out the video on simple problems on DC generator
A three-phase, 50Hz, 6-pole induction motor runs at 950rpm. Calculate (i) The synchronous speed (ii) the slip (iii) Frequency of the rotor emf
(i) Ns=120f/p=120*50/6=1000rpm. (ii) s=(1000-950)/1000=0.05pu=5% (iii)f2=sf=0.05*50=2.5Hz
Calculate the speed in rpm of a 6-pole induction motor which has a slip of 6% at full load with a supply frequency of 50Hz. what will be the speed of a 4-pole alternator supplying the motor?
Synchronous speed of the motor, Ns2=120*50/6=1000rpm Motor's speed, Nr=(1-0.06)*1000=940rpm Speed of the alternator, Ns1=120*50/4=1500rpm