Modulation and Its Types

The diagram given below shows the block diagram of a detector for AM signals.


Label the unlabelled boxes in this block diagram indicated by (b) and (c).

Which of the following factors justify the need of modulating a signal:

Among following, the factor which justifies the need of modulating a signal is

How does the effective power radiated by an antenna (of length l) vary with wavelength?

What is amplitude modulation receiver?
 

What is the major advantage of FM compared with amplitude modulations?

Why is frequency modulation is preferred over amplitude modulation?

What is difference between frequency modulation and amplitude modulation?

What is the process of amplitude modulation?

What is meant by amplitude modulated wave?

 In amplitude modulation, the bandwidth is twice the signal frequency.This statement is true or false?

What is the bandwidth of amplitude modulation?
 

How is amplitude modulated signal transmitted?

__________ type of transmission, one complete side-band of the signal and half of the remaining side-band is sent together. Enable GingerCannot connect to Ginger Check your internet connection
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Which of the following is a type of amplitude modulation?

Give three advantages of amplitude modulation.

In case of Phase modulation, the phase of _____ wave is modulated with respect to information signal.

Number of amplitude modulation broadcast stations that can be accommodated in a $100 \mathrm{KHz}$ bandwidth if the highest frequency modulating a carrier is $5 \mathrm{KHz}$, is :-

A sinusoidal carrier voltage of frequency $1 \mathrm{M}\mathrm{H}\mathrm{z}$ and amplitude $100 \mathrm{V}$ is modulated by a sinusoidal voltage of frequency $5 \mathrm{k}\mathrm{H}\mathrm{z}$ producing $50 \mathrm{\%}$ modulation.The lower sideband frequency is _____ $\mathrm{kHz}$, upper sideband frequency is _____ $\mathrm{kHz}$ and amplitude of each sideterm is _____ $\mathrm{V}$.

A carrier wave of frequency $10 \mathrm{M}\mathrm{H}\mathrm{z}$ and peak value $10 \mathrm{V}$ is amplitude modulated by a $5 \mathrm{k}\mathrm{H}\mathrm{z}$ sine wave of amplitude $6 \mathrm{V}.$ Calculate the amplitude of the two side-bandsin volts.