ET3202Fall2017
Me Choice
the choice that best completes the statement or answers the question.
Figure 1 An AM signal with 8 kHz bankdwidth, a carrier frequency of 100 kHz, a maximum peak te
peak value of $E_{pp,max} = 10$ V and $E_{pp,min} = 6$ V
1. What is the trigonometric representation of the AM signal?
a. $(4+cos(4000t))cos(100000t)$
b. $(5+cos(4000t))cos(100000t)$
c. $(3+2cos(8000\pi t))cos(200000\pi t)$
d. $(4+cos(8000\pi t))cos(200000\pi t)$
2. What is the modulatio index of the signal in Figure 1?
a. 0.25
b. 4
c. -0.25
d. -4