MyQuestionIcon

1

You visited us 1 times! Enjoying our articles? Unlock Full Access!

1900's Physics and Wave

A message sig...

Question

A message signal of frequency $20 k H z$ is used to modulate a carrier of figure $1.5 M H z$ . The side bands produced are:

A

520 k H z, 480 k H z

No worries! We‘ve got your back. Try BYJU‘S free classes today!

B

1520 k H z, 1480 k H z

Right on! Give the BNAT exam to get a 100% scholarship for BYJUS courses

C

1500 k H z, 50 k H z

No worries! We‘ve got your back. Try BYJU‘S free classes today!

D

1020 k H z, 98 k H z

No worries! We‘ve got your back. Try BYJU‘S free classes today!

Open in App

Solution

The correct option is B $1520 k H z, 1480 k H z$
The message signal is super positioned on the carrier wave.
Thus side bands produced have frequencies=Carrier Frequency $\pm$ Message Frequency
$= 1.5 M H z \pm 20 k H z$
$= 1520 k H z, 1480 k H z$

Suggest Corrections

thumbs-up

0

Similar questions

Q. A message signal of frequency 20 KHz and peak voltage of 20 volts is used to modulate a carrier signal of frequency 2 MHz and peak voltage of 40 volts. Determine (i) modulation index, (ii) the side bands produced. Draw the corresponding frequency spectrum of amplitude modulated signal.

Q. A message signal of frequency 10 kHz and peak voltage of 10 volts is used to modulate a carrier of frequency 1 MHz and peak voltage of 20 volts. Determine (a) modulation index, (b) the side bands produced.

5 k H z

frequency is amplitude modulated on a carrier wave of frequency

2 M H z

. What are the frequencies of the side bands produced?

Q. Define modulation index. Why is its value kept, in practice, less than one?
A carrier wave frequency

1.5 M H z

50 V

is modulated by a sinusoidal wave of frequency

10 k H z

50

% amplitude modulation. Calculate the amplitude of the AM wave and frequencies of the side bands produced.

Q. A message signal of

12 k H z

and peak voltage

20 V

is used to modulate a carrier wave of frequency

12 M H z

and peak voltage

30 V

. Then the modulation index is

View More

Join BYJU'S Learning Program

similar_icon

Related Videos

lock

Wave Nature of Light

CHEMISTRY

Watch in App

explore_more_icon

Explore more

1900's Physics and Wave

Standard XII Chemistry

Join BYJU'S Learning Program

CrossIcon