Recent content by MisterP

Ok, I have come to some conclusion, i hope it is right. So, first comes base harmonic and it is devided by 2. A0/2, then adding other harmonics + A1*cos(314-0.68) + etc So, 314 is because I have 50hz frequency and -0.68 is my angle in radians.

Thanks for response. I am not sure about A0/2, but I have seen it in books. I found formula where it says (2PI/T)*t + phase comes in cosine function. What is "(2PI/T)*t"? PI refers to 3.14

Formula I have shows is probably for resulting harmonic? Does syntesizing mean writing the main formula? I havo no clue about effective value of signal and representation is probably done in excel or other graphing app.

Yes, so it looks like it was just all times 2 :)

I do not get it, why is 65,7 wrong? I got the same result as calculator and it says it is wrong (online test)

and 65,7 is not the right answer :D

X limits are from -4 to 5 and Y limits are from 0 to sqrt(4+x)?

I know how to integrate, I just got confused on which should be as a limit, x = or y = . I have test closing in 15min

Bounds are limits? English is not my native..

X as constant

I wrote that integral for area I need to calculate.. the are between functions x=y^2-4; y = 0 and x=5 First, I integrate (x+2y)

So i drew sketch. And I do not understand, how to write integral for calculation, which I should use, X or Y on limit? Is one of them right? First answer gives me 65,7 Second 383,4

I know that there is a formula for calculation, but I cannot find it. Voltage across both of them is 100V, amps through R is 0.55A and amps on XL is 1A. There is an ampmeter before both of them as well and it shows 1.18A

Hello. So I have a coil and a resistor in parallel connection. It is powered by alternating current. I have to calculate angle between voltage and current, what is the formula? I know the reactive resistance in coil, I know resistance of resistor, voltage across both of them and amps flowing...

Yes, I know, but it does not add up to near "200" or 0,2 or something like that.. To calculate turns I did this: 3.14 * 5cm (2*r) = 15.7cm is for one turn. So, 200 turns would be 3140cm.. where did I go wrong? If I continue with "40 = 1,1l/0,785..." I get 28.57.. let`s just change it to...