JEE PYQ: Communication System Question 29
Question 29 - 2019 (10 Jan 2019 Shift 2)
The modulation frequency of an AM radio station is 250 kHz, which is 10% of the carrier wave. If another AM station approaches you for license what broadcast frequency will you allot?
(1) 2750 kHz
(2) 2900 kHz
(3) 2250 kHz
(4) 2000 kHz
Show Answer
Answer: (4)
Solution
$f_{carrier} = \frac{250}{0.1} = 2500$ kHz. Range $= 2500 \pm 250 = 2250$ to $2750$ kHz. For 2000 kHz, range $= 1800$ to $2200$ kHz — no overlap.
BETA
