In AM wave, carrier power is given by-

$P_{c} = \frac{2 E_{0}^{2}}{R}$

$P_{c} = \frac{E_{c}^{2}}{R}$

$P_{c} = \frac{E_{0}^{2}}{2 R}$

$P_{c} = \frac{E_{c}^{2}}{\sqrt{2} R}$

Video Solution

Text Solution

Verified by Experts

The correct Answer is:C

$P_{c} = \frac{E_{r m s}^{2}}{R} = \frac{E_{c}^{2}}{2 R}$

Updated on:21/07/2023

Class 11 PHYSICS COMMUNICATION SYSTEM

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Question 1 - Select One
A modulating signal is a square wave as shown in the figure

The carrier wave is given by.
$c (t) = 1.33 sin (8 π t) volts$
The modulation index is
A $2$
B $0.75$
C $0.5$
D $1.5$
Question 1 - Select One
A modulating signal is a square wave as shown in figure.

The carrier wave is given by
$c (t) = 2 sin (8 π t) volt$ .
The modulation index is
A $2$
B $0.75$
C $0.5$
D $1.5$
Question 1 - Select One
In AM wave total power of side bands is given by :
A $P_{S} = \frac{E_{C}^{2}}{4 R}$
B $P_{s} = \frac{4 E_{C}^{2}}{R}$
C $P_{s} = \frac{m^{2} E_{c}^{2}}{4 R}$
D $P_{s} = \frac{E_{c}^{2}}{4 m^{2 R}}$
Question 1 - Select One
In AM wave total power of side bands is given by :
A $P_{S} = \frac{E_{C}^{2}}{4 R}$
B $P_{s} = \frac{4 E_{C}^{2}}{R}$
C $P_{s} = \frac{m^{2} E_{c}^{2}}{4 R}$
D $P_{s} = \frac{E_{c}^{2}}{4 m^{2 R}}$
Question 1 - Select One
If carrier wave is given by $y_{c} = A_{c} sin (ω_{c} t)$ and message signal is $y_{s} = A_{s} sin (ω_{s} t)$ find bandwidth of AM wave (in hz)
A $\frac{ω_{s}}{π}$
B $\frac{ω_{s}}{2 π}$
C $\frac{ω_{c} - ω_{s}}{π}$
D $2 \frac{ω_{c} - ω_{s}}{π}$
Question 1 - Select One
If the frequency of the carrier wave is increased from 10 MHz to 100 MHz, the length of the half wave dipole antenna required for transmission
Aa.increases
Bb.decreases
Cc.remains constant
Dd.will be doubled
Question 1 - Select One
The process of superimposing signal frequency (i.e. audio wave) on the carrier wave is known as
ATransmission
BReception
CModulation
DDetection

In AM wave, carrier power is given by-

The correct Answer is:C

$P_{c} = \frac{E_{r m s}^{2}}{R} = \frac{E_{c}^{2}}{2 R}$

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A modulating signal is a square wave as shown in the figure

The carrier wave is given by.
$c (t) = 1.33 sin (8 π t) volts$
The modulation index is

A modulating signal is a square wave as shown in figure.

The carrier wave is given by
$c (t) = 2 sin (8 π t) volt$ .
The modulation index is

In AM wave total power of side bands is given by :

In AM wave total power of side bands is given by :

If carrier wave is given by $y_{c} = A_{c} sin (ω_{c} t)$ and message signal is $y_{s} = A_{s} sin (ω_{s} t)$ find bandwidth of AM wave (in hz)

If the frequency of the carrier wave is increased from 10 MHz to 100 MHz, the length of the half wave dipole antenna required for transmission

The process of superimposing signal frequency (i.e. audio wave) on the carrier wave is known as

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In AM wave, carrier power is given by-

The correct Answer is:C

Pc=E2rmsR=E2c2R

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A modulating signal is a square wave as shown in the figure The carrier wave is given by. c(t)=1.33sin(8πt)volts The modulation index is

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In AM wave total power of side bands is given by :

If carrier wave is given by yc=Acsin(ωct) and message signal is ys=Assin(ωst) find bandwidth of AM wave (in hz)

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RESONANCE-COMMUNICATION SYSTEM-Exercise

$P_{c} = \frac{E_{r m s}^{2}}{R} = \frac{E_{c}^{2}}{2 R}$

A modulating signal is a square wave as shown in the figure

The carrier wave is given by.
$c (t) = 1.33 sin (8 π t) volts$
The modulation index is

A modulating signal is a square wave as shown in figure.

The carrier wave is given by
$c (t) = 2 sin (8 π t) volt$ .
The modulation index is

If carrier wave is given by $y_{c} = A_{c} sin (ω_{c} t)$ and message signal is $y_{s} = A_{s} sin (ω_{s} t)$ find bandwidth of AM wave (in hz)