Communication Systems
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New answer posted
2 weeks agoContributor-Level 10
According to question, we can write
Increment in height of tower = h2 – h1 = 500 – 125 = 375 m
New answer posted
3 weeks ago
Contributor-Level 10
Low pass filter will allow low frequency signal to pass while high pass filter allow high frequency to pass through
New answer posted
3 weeks agoContributor-Level 10
µ = A? /A? = 0.5 {A? = 20 volt, A? = 40 volt}
m (t) = A? sin ω? t {ω? = 2π*10? }
c (t) = A? sin ω? t {ω? = 2π*10*10³}
C? (t) = (A? + A? sin ω? t) sin ω? t ⇒ A? {1+ µsin ω? t} sin ω? t
New question posted
a month agoNew answer posted
a month agoContributor-Level 10
Amplitude of sidebands = µAc/2
Here µ = Am/Ac = 5/15 = 1/3
Amplitude = (1/3) (15)/2 = 2.5 V
a/10 = 2.5 => a = 25
b/10 = 2.5 => b = 25
a/b = 1
New answer posted
a month agoContributor-Level 10
Sound level is given in dB = 10 log
As sound level decreases 5 dB every km,
So, in 20 km sound level will decrease by 20 * 5 = 100 dB.
x = 8
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