Study review questions

QUESTION 17 Given the following FM modulated signal equation, determine the original message equation, m(t). S(t)-3 COs(23E9t + 1.04sin(2 3E3t)), Kvc0-4500 (Hz/V) b. m(t)- 1.04cos(2n13E3t) Cm(t)= 1 .04cos(2n1 3E90 d. m(t)- 3cos(2n13E3t) QUESTION 18 Given the following message, m(t), carrier, ct), and Kp 0.2(rad/v), determine the PM modulated signal equation. mt) 3cos(2n4000t), ct) 4cos(2n6E6t). c, s(t)=3cos(2n6E6e+ 0.6cos(2m3500 d. s(t) 3cos(2T4000t0.6cos(24kHz*)) QUESTION 19 Given the following PM modulated signal equation, determine the frequency bandwidth. s(t)-3cos2 3E9e+ 0.4cos2 3E30) a. 22kHz b. 36.4 kHz c. 72.8 kHz d. 116 kHz QUESTION 20 Both FM and PM are considered angular modulation techniques; therefore, both methods are interchangeable. As an example, you can modulate a signal using FM, and demodulate it using either PM or FM. True False