- #1

tasnim rahman

- 70

- 0

This isn't exactly homework, for which I am not posting in the homework section. I am currently doing my undergrads, and am in the second semester of my first year. I am going to give my finals which start from tomorrow, with the first subject being Electrical Circuits II. I was solving the past papers and got stuck on one of the questions, as shown in the photo. In this question, they asked to determine the average value of the current over 1 cycle of it. Please ignore the line drawn through the first oscillatory part. I had mistakenly drawn it with pen, while attempting to solve it. It does not exist there. While it is easy to solve for the average value for any other part of the curve, the problem lies with the first oscillatory part. It consists of two separate sine waves, the first and second quadratures of which have been joined together, one with a maximum/minimum of 10 and the other with a maximum/minimum of 20. I do not know how to find the average value for this part. I tried to solve it, by taking two separate equations for the two sine wave sections and then integrating over them with the respective limits. Like this: ∫(sin wave 1) dt (limits 6 to 0) + ∫ (sin wave 2) dt (limits 12 to 6). But I can't be sure of the limits as there is no logic behind choosing them as such. And also I am not sure if this is the right way. Please, somebody help me find out the average value of the curve, as soon as possible. Thanks in advance.