For an amplitude-modulated wave, the audio fr | vedclass

Name: Exam Paper Generator | JEE NEET Paper Generator | Vedclass
Brand: Vedclass
Rating: 5 (35 reviews)

Question

(D) In amplitude modulation, the carrier frequency $(f_c)$ must be significantly higher than the modulating (audio) frequency $(f_m)$ to ensure effici

Vedclass · Accepted Answer

$50,000$

Vedclass · Answer

(D) In amplitude modulation, the carrier frequency $(f_c)$ must be significantly higher than the modulating (audio) frequency $(f_m)$ to ensure efficient transmission and signal processing.Typically, the carrier frequency is chosen to be at least $100$ times the modulating frequency.Given $f_m = 500 \, 	ext{Hz}$.Among the given options, $50,000 \, 	ext{Hz}$ $(50 \, 	ext{kHz})$ is the only value that satisfies the condition $f_c \gg f_m$.Therefore, the correct carrier frequency is $50,000 \, 	ext{cycles/sec}$.

List-$I$ (Layer of atmosphere)	List-$II$ (Approximate height over earth's surface)
$(A)$ $F_1$-Layer	$(I)$ $10\,km$
$(B)$ $D$-Layer	$(II)$ $170-190\,km$
$(C)$ Troposphere	$(III)$ $100\,km$
$(D)$ $E$-Layer	$(IV)$ $65-75\,km$

For an amplitude-modulated wave, the audio frequency is $500 \, \text{cycles/second}$. What is the actual carrier frequency in $\text{cycles/sec}$?

Similar Questions

The characteristic impedance of a coaxial cable is typically in the range of ..........

When the receiving antenna is on the ground,the range of a transmitting antenna of height $980 \ m$ is (Radius of the earth $= 6400 \ km$) (in $km$)

If the amplitude of an audio signal is half the amplitude of the carrier wave,what is the modulation index?

At a particular station,the $TV$ transmission tower has a height of $100\,m$. To triple its coverage range,the height of the tower should be increased to ......$m$.

Vedclass Test Series

Exam Paper Generator

Online Exam Module