Home » Alternating Current » 5 » b An impure signal is found to have 2 kHz and 4 kHz components. This 4 kHz signal is: a. a fundamental of the 2 kHz signal b. c. the DC component of the main signal d. a harmonic of the 2 kHz signal Your answer "b" is not correct. "d" is the right answer. It is actually the second harmonic, because it is two times the other frequency. Next |