00:01
Hi, in this question, we have a sinusoidal carrier of 20 volt.
00:06
So we have the value of ac given as 20 volt.
00:11
Then we have 2 millihertz frequency.
00:16
So we have fc given as 2 millihertz.
00:21
And this frequency is modulated by a sinusoidal message signal having voltage am of 10 volt.
00:31
Also, the frequency is given as kf equals to 25 kilohertz divided by v.
00:45
And we have 50 kilohertz as the frequency.
00:50
So fm will be equal to 50 kilohertz.
00:54
So in part a of this question, they're asking us to find delta f beta bandwidth and power.
01:02
So here, delta f can be calculated as kf into am.
01:13
So we'll have this as 25 kilohertz divided by v into 10v, which gives the value of delta f as 25 into 10, which is 250 kilohertz.
01:31
Now, next, we have to calculate beta.
01:33
So beta can be calculated as delta f divided by fm.
01:41
So we get the value of bandwidth beta as 250 divided by 50, which gives the value of beta as 5...