Question 2 (a) In the context of AC circuits, explain why the average power dissipated in the imaginary part of the impe

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Question 2 A In The Context Of Ac Circuits Explain Why The Average Power Dissipated In The Imaginary Part Of The Impe 1 (43.51 KiB) Viewed 31 times

Question 2 (a) In the context of AC circuits, explain why the average power dissipated in the imaginary part of the impedance is always zero. [5 marks] (b) The AC circuit in Figure 2.1 contains two sinusoidal voltage sources with different frequencies: V (t)=10 cos(30t-45°) V, Vg(t)=8 cos(40t +125°) V. 800 Ω i(t) 5H relle + VA(t) VB(t) Figure 2.1 (1) Use source superposition to determine the expression for the AC current i(t). You should clearly show all your calculations leading to the final results. [10 marks] Find the average power absorbed by the 800 resistor and the 5 H inductor, respectively. You should clearly justify your answers. [5 marks] e