Browse by Stream
QnA
Home
QnA
Go To Your Study Dashboard

Get Answers to all your Questions

header-bg qa
  • Home
  • Engineering
  • Help me solve this A 100 V carrier wave is made to vary between 160 V and 40 V by a modulating signal . What is the modulation index ?

A 100 V carrier wave is made to vary between 160 V and 40 V by a modulating signal . What is the modulation index ?

  • Option 1)

     0.4

  • Option 2)

     0.5

  • Option 3)

     0.6

  • Option 4)

     0.3

Answers (1)

best_answer

 

Modulation Index -

The ratio of change of amplitude of carrier wave to the amplitude of original carrier wave.

- wherein

m_{a}= \frac{E_{m}}{E_{c}}

A_{c}=100V

A_{c}+A_{m}=160V=A\, \, max\, \, \, \, \, \, \left ( 1 \right )

A_{c}-A_{m}=40=A\, min\, \, \, \, \, \, \left ( 2 \right )

From (1) & (2) 

A_{c}=100V  &   A_{m}=60m

 

So  \mu =\frac{A_{m}}{A_{c}}=0.6

 

 


Option 1)

 0.4

Option 2)

 0.5

Option 3)

 0.6

Option 4)

 0.3

Posted by

admin

View full answer

JEE Main high-scoring chapters and topics

Study 40% syllabus and score up to 100% marks in JEE

Similar Questions

Trending Articles/News

anam-khan

JEE Main Result 2024 Live: JEE April results at jeemain.nta.ac.in likely today; cutoff, rank predictor, update
anam-khan

JEE Main 2024 session 2 final answer key out at jeemain.nta.ac.in; steps to check probable scores
anam-khan

JEE Main Result 2024 Live: Download session 2 final answer key at jeemain.nta.ac.in; rank predictor, cutoff

Latest Question