Answer:
B. 152.64
Explanation:
The average value of a sinusoidal waveform taken over half cycle is given by
[tex]V_{avg}=\frac{2}{\pi } V_{peak}[/tex]
or simplifying it further results in;
[tex]V_{avg}=0.637 V_{peak}[/tex]
We are given [tex]V_{peak}=240[/tex]
[tex]V_{avg}=\frac{2}{\pi }(240)[/tex]
[tex]V_{avg}=152.7V[/tex]
Hence option B is the right answer
Please note:
The average value of a pure sinusoidal wave over a full cycle (0 to 360°) is always zero since the positive and negative half cancel out each other due to being symmetric.
This is why we always take average over half cycle (0 to 180°).
