An AM modulator has output xc (t) = 40 cos 400 t + 4 cos 360 t + 4 cos 440 t The AM modulation efficiency is

An AM modulator has output xc (t) = 40 cos 400 t + 4 cos 360 t + 4 c

1.	An AM modulator has output xc (t) = 40 cos 400 t + 4 cos 360 t + 4 cos 440 t The AM modulation efficiency is
A.	0.01
B.	0.02
C.	0.03
D.	0.04
Answer» C. 0.03