1
You visited us 1 times! Enjoying our articles? Unlock Full Access!
Question

# A message signal m(t)=5 sin c(500 t) V is applied to a frequency modulator whose carrier frequency is 100 MHz and frequency sensitivity is 400 Hz/V. The modulation index (or the deviation ratio) of the resultant FM signal will be [ Assume that, sin c(t)=sin(πt)/πt]

A
8
Right on! Give the BNAT exam to get a 100% scholarship for BYJUS courses
B
12
No worries! We‘ve got your back. Try BYJU‘S free classes today!
C
4
No worries! We‘ve got your back. Try BYJU‘S free classes today!
D
16
No worries! We‘ve got your back. Try BYJU‘S free classes today!
Open in App
Solution

## The correct option is A 8m(t)=5sin c(500t) V M(f)=5500rect(f500) |m(t)|max=5 V fm(max)=5002=250 Hz The modulation index of an FM signal can be given by, β=kf|m(t)|maxfm(max)=400×5250=8

Suggest Corrections
0
Join BYJU'S Learning Program
Related Videos
Parallel Lines and a Transversal
PHYSICS
Watch in App
Explore more
Join BYJU'S Learning Program