1. Homework Statement
I have difficulty in understanding the meaning of fundamental cutsets.I don't really know how to find the fundamental cutsets.Can someone please guide me.It would be the best if there are any examples and links cited for me.Thanks in advance..
2. Homework Equations...
1. Homework Statement
I was assigned to design an ac ammeter.But i have no idea how to work on it and don't know how to find the R for the ac ammeter?
Thx for the help! =]
2. Homework Equations
3. The Attempt at a Solution
1. Homework Statement
consider the balanced three phase star source with RMS phase voltage magnitude of 230V shown in fig5 with an impedance of Zg=5+j5.The per-phase impedance value of a three phase balanced star and delta connected loads are 30+j30.
a)Determine the line and phase voltages...
1. Homework Statement
four long straight parallel wires located at the corners of a square of side l=6cm carry equal current I=10A which is perpendicular.Determine the magnitude and direction of B at the center of the square.
2. Homework Equations
don't have,so sorry..
3. The Attempt...
1. Homework Statement
three point charges q1,q2&q3 are place at the vertices of triangle as shown in the diagram charge q1 has been given 4.5 X 10^13 extra electrons, charge q2 given 9.0 X10^13 extra electrons and q3 has had 9.0 X 10^13 electrons taken from it. Calculate the electric charge of...
1. Homework Statement
integrate (4x^2 + 3x + 6)/x^2 (x+2) dx
2. Homework Equations
don't have sorry..
3. The Attempt at a Solution
firstly = A/x + B/x^2 + C /x+2 , = A(x^2)(x+2) + B(x)(x+2) + C(x)(x^2) equating with the 4x^2 + 3x + 6,then i integrate it,but my ans turn out to...
oh i see..i'm from foundation in engineering,next year going for electrical most probably..haha, that will be very good if you can be one of my mentor..haha,do you have a messenger account?i will try out those questions since its so challenging..thanks a lot anyway..:rofl:
oh,ya sure i tried a lot of these kind of problems..and catching up well,do you have any link which leads to more ques with solutions?by the way thanks for your help,if not i won't be able to get these things solved..haha..
i could integrate it thanks a lot,yesterday was brain dead..im so sorry,finally i get your points clear d..thanks man,integrate /x/(x+1) will be ln(x+1) i completely understand..thanks to both of you..but i put it in this way,can you please check out could this sol works? 1st,i use a=x+1 ,then...
ok,thanks a lot.,i get your idea..but i can't really take it from there but then i can get it by putting your idea into my way..anyway thank for your help
ya,the answer is not match then which part of mine turn out to be wrong?then integrate of 1/(x+1) wrong?why?so what should i do?no,que required to integrate by parts,which means
/u dv = uv - /v du
ya that's integral sign,why do you say it's wrong?can you please tell me..?thanks..i did like what nomoreexams said..i still can't get my ans correct..i sow you my steps please rectify me.. like what he says; u=ln(x+1) after diff du/dx = 1/x+1 and u integrate dv=1 dx..it will be v= x so finally...
i did like what you mention but i couldn't find the ans..the ans is (x+1)(ln(x+1)) -(x+1) + c ,if i differetiate du/dx =1/(x+1) and sub into the formula i can't get..
1. Homework Statement
integrate ln(x+1) dx (integrate by part)
2. Homework Equations
integrate e^-2x sin3x dx
3. The Attempt at a Solution
1st,i make u=x+1 ,so du/dx =1 du=dx..while i use /dv =/ln(x+1) dx and after integrating my v=1/(x+1) so subtitute into uv -/vdu but my ans...
the chapter of quantum physics vs classical physics will be one of the topic that i will be tested in final exam,but i'm a little confused by them..so i need a good references to refer to..could you please recommend me some good website as i can refer to..i have found this...
oh..did you actually mean that convention merely a choice for me..so,if i place a either a negative sign or i don't will also be correct???..then the problem the magnification should be -2 instead of 2?if yes then i understand completely...?
1. Homework Statement
An inverted image is magnified by 2 when the object is placed 22 cm in front of a concave mirror. Determine the image distance and the focal length of the mirror.
2. Homework Equations
don't have,sorry
3. The Attempt at a Solution
firstly,i use M= -di/do...
Re: diffraction grating ques..
ok,i got you,i use d=l/N ; l= 10^-2 , N =6000 thus, 10^-2/6000 so my d =1.67 X 10^-6 afterall i shall applied sin@=m X lambda / d .........CORRECT???