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.

List $I$	List $II$
$A$. Attenuation	$I$. Combination of a receiver and transmitter.
$B$. Transducer	$II$. Process of retrieval of information from the carrier wave at receiver.
$C$. Demodulation	$III$. Converts one form of energy into another.
$D$. Repeater	$IV$. Loss of strength of a signal while propagating through a medium.

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

Similar Questions

$A$ wave is represented as $e = 10 \sin(10^8 t + 6 \sin(1250 t))$. The modulation index is:

Television signals on earth cannot be received at distances greater than $100\, km$ from the transmission station. The reason behind this is that

An antenna of length $3 \ m$ will effectively radiate which frequency?

In an $AM$ wave,the carrier power is given by:

Vedclass Test Series

Exam Paper Generator

Online Exam Module