Question

1. which control adjusts the amplitude of the output signal? a dc offset b duty cycle c output level d % modulation

Explanation:

DC offset changes the average value of a signal, duty - cycle is related to the proportion of time a signal is high in a periodic waveform, and % modulation is related to the degree of changing a carrier signal based on a message signal. Output level directly controls the amplitude of the output signal.

Answer:

C. Output Level