For which of the following AM waves is the mo | vedclass

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

Question

(C) The modulation index $m_a$ for an $AM$ wave is given by the formula:$m_a = \frac{E_{max} - E_{min}}{E_{max} + E_{min}}$For the modulation index to

Vedclass · Accepted Answer

Vedclass · Answer

(C) The modulation index $m_a$ for an $AM$ wave is given by the formula:$m_a = \frac{E_{max} - E_{min}}{E_{max} + E_{min}}$For the modulation index to be $1$,we must have $E_{min} = 0$.Looking at the provided images:In image $169-$c213,the envelope of the wave touches the time axis,which means the minimum amplitude $E_{min} = 0 \ V$ and the maximum amplitude $E_{max} = 10 \ V$.Substituting these values into the formula:$m_a = \frac{10 - 0}{10 + 0} = \frac{10}{10} = 1$.Therefore,the wave in image $169-$c213 has a modulation index of $1$.

For which of the following $AM$ waves is the modulation index equal to $1$?

Similar Questions

$A$ message signal of frequency $100\, MHz$ and peak voltage $100\, V$ is used to execute amplitude modulation on a carrier wave of frequency $300\, GHz$ and peak voltage $400\, V$. The modulation index and difference between the two sideband frequencies are:

What is the amplitude of the $LSB$ (Lower Side Band) frequency in the $AM$ wave shown in the figure (in $V$)?

$A$ carrier wave is used to transmit a message signal. If the peak voltage of the modulating signal and the carrier signal are increased by $1 \%$ and $3 \%$ respectively,the modulation index is changed by (in $\%$)

In amplitude modulation,determine the total maximum transmitted power in $kW$,if the carrier output is $1 \, kW$.

An amplitude modulated wave is modulated to $50\%$. If the carrier and one of the sidebands are suppressed,the percentage reduction in power is ....$\%$

Vedclass Test Series

Exam Paper Generator

Online Exam Module