Ask a Doubt
Request a call back

Join NOW to get access to exclusive study material for best results

CBSE Class 12-science Answered

What do you understand by frequency modulation? A signal of 10 kHz and peak voltage 20 V is used to modulate a carrier wave of frequency 10 MHz and peak voltage 40 V.Calculate a) depth of modulation .b) side bands frequencies.
Asked by Topperlearning User | 08 Jul, 2014, 10:36: AM
answered-by-expert Expert Answer

Frequency modulation is a type of modulation in which the frequency of the carrier wave is changed in accordance with the amplitude of the modulating wave.For this the modulating wave is superimposed on a high frequency carrier wave in such a way that the amplitude of the modulated wave is same as that of the carrier wave but its frequency gets modified. 

Given : E m = 20 V , E c = 40 V ;

           f m =10 kHz , f c = 10 MHz =10,000 kHz

       a. depth of modulation (Modulation index) ,

        Syntax error from line 1 column 49 to line 1 column 73. Unexpected '<mstyle '.

Answered by | 08 Jul, 2014, 12:36: PM

Concept Videos

Multiple Choice Questions Practice Test
Answered Unanswered My Questions My Answers
CBSE 12-science - Physics
what is 5g technology and how it works?
Asked by sagarmishra | 08 Sep, 2023, 01:55: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 12-science - Physics
What is amplitude modulation? Explain the block diagram of a practical AM transmitter.
Asked by tanyagupta1874 | 17 Jan, 2022, 10:16: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 12-science - Physics
A carrier wave of peak voltage 15V is used to transmit a message signal. Findthe peak voltage of the modulating signal in order to have a modulation index of 60%.
Asked by cupatil | 07 Mar, 2018, 11:22: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 12-science - Physics
What do you understand by the term modulation?
Asked by Topperlearning User | 08 Jul, 2014, 09:23: AM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 12-science - Physics
With the help of diagram, explain the term amplitude modulation qualitatively.
Asked by Topperlearning User | 08 Jul, 2014, 09:45: AM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 12-science - Physics
What is the importance of depth of modulation?
Asked by Topperlearning User | 08 Jul, 2014, 10:05: AM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 12-science - Physics
What do you understand by frequency modulation? A signal of 10 kHz and peak voltage 20 V is used to modulate a carrier wave of frequency 10 MHz and peak voltage 40 V.Calculate a) depth of modulation .b) side bands frequencies.
Asked by Topperlearning User | 08 Jul, 2014, 10:36: AM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 12-science - Physics
Write main advantages and disadvantages of the AM technique.
Asked by Topperlearning User | 08 Jul, 2014, 11:00: AM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 12-science - Physics
Give three reasons which make modulation of message (or information) essential in a communication system.
Asked by Topperlearning User | 08 Jul, 2014, 11:14: AM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 12-science - Physics
Explain with the help of diagram, how the process of modulation is carried out in radio broadcast?
Asked by Topperlearning User | 08 Jul, 2014, 11:23: AM
ANSWERED BY EXPERT ANSWERED BY EXPERT
My Class Videos Tests ₹ Plans Ask a Doubt
Get Latest Study Material for Academic year 24-25 Click here
×