Recent content by MisterP

  1. M

    Engineering Adding Harmonics to Form the Final Signal

    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.
  2. M

    Engineering Adding Harmonics to Form the Final Signal

    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
  3. M

    Engineering Adding Harmonics to Form the Final Signal

    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.
  4. M

    Integrating with Double Limits: X or Y? Calculating the Correct Integral

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

    Integrating with Double Limits: X or Y? Calculating the Correct Integral

    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)
  6. M

    Integrating with Double Limits: X or Y? Calculating the Correct Integral

    and 65,7 is not the right answer :D
  7. M

    Integrating with Double Limits: X or Y? Calculating the Correct Integral

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

    Integrating with Double Limits: X or Y? Calculating the Correct Integral

    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
  9. M

    Integrating with Double Limits: X or Y? Calculating the Correct Integral

    Bounds are limits? English is not my native..
  10. M

    Integrating with Double Limits: X or Y? Calculating the Correct Integral

    X as constant
  11. M

    Integrating with Double Limits: X or Y? Calculating the Correct Integral

    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)
  12. M

    Integrating with Double Limits: X or Y? Calculating the Correct Integral

    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
  13. M

    Coil and resistor in parallel -- How to calculate the phase angle?

    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
  14. M

    Coil and resistor in parallel -- How to calculate the phase angle?

    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...
  15. M

    Calculate number of turns for an electric heater

    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...