An amplitude modulated wave is represented by | vedclass

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

Question

(B) The standard equation for an amplitude modulated wave is given by $C_{m}(t) = A_{c}(1 + \mu \cos \omega_{m} t) \sin \omega_{c} t$.Comparing this w

Vedclass · Accepted Answer

$2$

Vedclass · Answer

(B) The standard equation for an amplitude modulated wave is given by $C_{m}(t) = A_{c}(1 + \mu \cos \omega_{m} t) \sin \omega_{c} t$.Comparing this with the given equation $C_{m}(t) = 10(1 + 0.2 \cos 12560 t) \sin (111 	imes 10^{4} t)$, we identify the angular modulating frequency $\omega_{m} = 12560 \ rad/s$.We know that $\omega_{m} = 2 \pi f_{m}$, where $f_{m}$ is the modulating frequency.Therefore, $f_{m} = \frac{\omega_{m}}{2 \pi} = \frac{12560}{2 	imes 3.14} = \frac{12560}{6.28} = 2000 \ Hz$.Converting this to $kHz$, we get $f_{m} = 2 \ kHz$.

An amplitude modulated wave is represented by $C_{m}(t)=10(1+0.2 \cos 12560 t) \sin (111 \times 10^{4} t)$ volts. The modulating frequency in $kHz$ will be ........... .

Similar Questions

If the maximum and minimum voltage of an amplitude modulated wave are $V_{max}$ and $V_{min}$ respectively,then the modulation factor is:

The process of retrieval of information from the carrier wave is known as:

For commercial telephonic communication,the frequency range adequate for speech signals is

The height of the transmitting antenna, if $TV$ programs have to cover a population in an area of radius $64 \ km$, is: [Use Radius of earth $= 6.4 \times 10^6 \ m$] (in $m$)

$A$ carrier wave has a frequency of $1000 \, kHz$ and an amplitude of $20 \, V$. It is amplitude modulated by a signal wave of frequency $10 \, kHz$ and amplitude $10 \, V$. The modulation index and the frequencies of the $LSB$ and $USB$ are,respectively:

Vedclass Test Series

Exam Paper Generator

Online Exam Module