the radio station
- What Is The Maximum Q Factor The Tuned Circuit Can Possess If The Radio Station Please Do All Of The Questions 1 (197.98 KiB) Viewed 16 times
4 can represited An amyslitude modulated/AM) radio signal by y = heas (wt - kne) where cos/wt-kx) is the radio frequency (RF) carrier wave, and the modulated amplitude -given by A = a +6 cos (wit), w is an audio frequency (AF) signal, and so wize w is i) show that the AM radio signal can be written as the sam of three waves: y = acos (wt - koc) + & cas ((w+w')+ -kx) stens -w') + + kx) and explain what each of the wares represents. Zoos wo-w i) A tuned circuit is constructed to receive a medium wave AM radio station with frequency 1.0 MHE. What is the max & factor the tuned curen't ean it the radio station. possess is broadcasting AF signals with a maximum frequency of to KUz ? raising the Q factor in") What would be the effect of of the circuit beyond this point? are received 2. A stationary ship is equipped with sonar that sends out pulses of sound at 40 MHz. Reflected pulses from a submarine directly below with a time delay of frequency of 39.958 muz. If the speed of sea water is 1.54 km/s calculate. 80 ms at a Sound in i) the depth of the submarine it) its vertical speed