Download Aptitude Crack
img not found img not found

Communication Systems - Engineering

Q1:

A 1000 kHz carrier wave modulated 40% at 40000 Hz is applied to a resonant circuit tuned to a carrier frequency and having Q = 140. What is the degree of modulator after transmission through the circuit?

A 40%

B 20%

C 0.27

D 0.54

ANS:C - 0.27

m0 = m(1 + 4Q2δ2)1/2 .