Question

A 2 MHz carrier is amplitude modulated by a 500 Hz modulating signal to a depth of 70%. If the unmodulated carrier power is 2 kW, the power of the modulated signal is

(a) 2.23 kW

(b) 2.36 Kw

(c) 1.18 kW

(d) 1.26 kW

I got this question during an interview.

Query is from Amplitde Modulation in section EDC Overview of Electronic Devices & Circuits

Answer 1

The correct answer is (a) 2.23 kW

To explain: Pt = Pc (1 + 0.49/2).