The sinusoidal waveform can be varied by using which of the following parameters??
I. frequency of the carrier wave
II.Amplitude of the carrier wave
III. Phase angle
To find the answer to this question, we need to understand what parameters can affect a sinusoidal waveform.
A sinusoidal waveform is characterized by its frequency, amplitude, and phase angle. So, the correct answer would include any of these parameters that can be varied to affect the sinusoidal waveform.
Let's examine each option mentioned:
I. Frequency of the carrier wave: Changing the frequency of the carrier wave will indeed vary the sinusoidal waveform. By increasing or decreasing the frequency, you can change the number of cycles per second, which will alter the pitch or tone of the waveform.
II. Amplitude of the carrier wave: Similarly, altering the amplitude of the carrier wave will impact the sinusoidal waveform. By increasing or decreasing the amplitude, you can adjust the overall height or strength of the waveform.
III. Phase angle: The phase angle refers to the starting point of the waveform. Changing the phase angle will shift the waveform horizontally, either to the left or to the right. This will result in a change in the starting position of the waveform.
Therefore, all of the parameters mentioned - frequency of the carrier wave, amplitude of the carrier wave, and phase angle - can be varied to affect the sinusoidal waveform. The correct answer is I, II, and III.