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GATE & ESE - EE, EC

Practice

Communications

Amplitude Modulation

Quick practice

Question 1 of 5

Consider the frequency modulated signal 10 \cos \left[2 \pi \times 10^{5} t+8 \sin (2 \pi \times 1500 t)\right.+10.5 \sin (2 \pi \times 1000 t)]  with carrier frequency of 10^5 Hz. The modulation index is

A

15

B

12.5

C

5

D

7.5

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