Question

1. which adjustment to the output signal changes the amount of dc voltage? a frequency b amplitude c dc offset d symmetry

Explanation:

DC offset is the addition of a constant DC voltage level to an AC - based signal. Changing the DC offset directly changes the amount of DC voltage in the output signal. Frequency affects the number of cycles per second of an AC signal, amplitude affects the strength of the signal, and symmetry is related to the shape of the signal waveform and not directly to the DC voltage amount.

Answer:

C. DC offset