For the periodic wave form below, find the effective voltage:

4) The pulsed cosine signal shown in the following figure is "on" for two cycles and then "off" for a period of time equivalent to 18 cycles of the cosine wave. The signal is periodic and the frequency of the cosine wave is 200 rad/s. A 0 10 20 190 200 10 1 (ms) a) Sketch the frequency spectrum for this signal. b) How would the frequency spectrum change if the frequency of the cosine wave was doubled? c) How would the frequency spectrum change if the "off" time was halved?

For the periodic waveform shown in Figure B3 40 Tne (s Figure B3 Compute the following: i. Time period & frequency ii. Average Value & RMS Value ii. Form Factor and Peak Factor

Write code to produce the wave form as following(The phase change is pi) Serial binary data BPSK VA AMMA AMA Phase changes