While tuning in a certain broadcast station w | vedclass

Name: Exam Paper Generator | JEE NEET Paper Generator | Vedclass
Brand: Vedclass
Rating: 5 (35 reviews)

Question

(A) In a superheterodyne receiver,the process of tuning involves selecting a specific broadcast station signal. This is achieved by changing the frequ

Vedclass · Accepted Answer

Varying the local oscillator frequency

Vedclass · Answer

(A) In a superheterodyne receiver,the process of tuning involves selecting a specific broadcast station signal. This is achieved by changing the frequency of the local oscillator. By varying the local oscillator frequency,the difference between the incoming radio frequency $(f_r)$ and the local oscillator frequency $(f_o)$ is kept constant,which is known as the intermediate frequency $(f_i = |f_r - f_o|)$. Therefore,tuning is essentially the act of varying the local oscillator frequency to match the desired station.

While tuning in a certain broadcast station with a receiver,we are actually

Similar Questions

$A$ carrier wave of peak voltage $15 V$ is used to transmit a message signal. What should be the peak voltage of the modulating signal in order to have a modulation index of $80\%$ (in $V$)?

The height of a transmission antenna is $100 \, m$. The population density is $1000 \, \text{people}/km^2$. How many people can watch the program?

Ground waves are polarized in which direction?

The maximum frequency of transmitted radio waves above which the radio waves are no longer reflected back by the ionosphere is . . . . . . ($N=$ maximum electron density of the ionosphere, $g=$ acceleration due to gravity).

The range of frequency bands used for standard $AM$ broadcast is

Vedclass Test Series

Exam Paper Generator

Online Exam Module