Question

What do you understand by low level AM?

(a) Output power is low

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

(c) Collector Modulation Method is low level AM

(d) Output power is high

This question was addressed to me in an online quiz.

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

Answer 1

Correct option is (a) Output power is low

Explanation: In low level AM, modulation is done at low power of carrier and modulating signal therefore output power is low. Therefore, power amplifiers are used to boost the carrier and modulating signal. Collector Modulation Method is high level AM. At high-level AM, output power is high.