Question

What do you understand by high level AM?

(a) Output power is low

(b) Modulation is done at high power of carrier and modulating signal

(c) No need to boost the carrier and modulating signal

(d) Modulation is done at low power of carrier and modulating signal

I got this question in an interview for job.

I would like to ask this question from Frequency Domain Description in division Amplitude Modulation of Analog Communications

Answer 1

The correct option is (b) Modulation is done at high power of carrier and modulating signal

Easiest explanation: For high level AM, modulation is done at high power of carrier and modulating signal, so power amplifiers are not used to boost the carrier and modulating signal. Therefore, output power is high. At low-level AM, output power is low.