Browse by Stream
QnA
Home
QnA
Go To Your Study Dashboard

Get Answers to all your Questions

header-bg qa
  • Home
  • Engineering
  • An analog signal is used to modulate the amplitude of a carrier wave, having a peak voltage . The maximum power that

An analog signal is used to modulate the amplitude of a carrier wave, having a peak voltage V_c. The maximum power that can be transferred by the amplitude modulated wave through an antenna (Take Antenna Resistance R) without disturbance 

Option: 1

\frac{3 V_c^2}{4R}


Option: 2

\frac{3 V_c^2}{2R}


Option: 3

\frac{3 V_c^2}{8R}


Option: 4

none 


Answers (1)

best_answer

As we have learned

maximum power in the AM wave without distortion -

Occurs when

m_{a}= 1
 

- wherein

P_{t}= 1.5 P

= 3\: P_{sb}

 

Maximum power may be transferred by the amplitude modulated wave when the modulation index is 1 (i.eV_m= V_c)

Total power = \left ( 1+\frac{m^2}{2} \right )\frac{ V_c^2}{2R}

 

Maximum power = \left ( 1+\frac{1}{2} \right )\frac{ V_c^2}{2R}  taking m = 1

P_T |_{max} = \frac{3 V_c^2}{4R} 

 

 

 

 

Posted by

Info Expert 30

View full answer

JEE Main high-scoring chapters and topics

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

Similar Questions