For TV transimission in india we use AM for video and FM
for audio. why like this? can we use opposite way?
Answer Posted / j.mohamed sadique basha
fm is used for audio and am is used for video we cannot
change that.. reason behind that is for example voice of
human being differ from person to person ...so that we need
tecnology with constant amplitude and variable frequency tha
is principle of fm...
am is used for video because picture size is decided using
frames and number of scannig lines...for example there are
different size of tv like 21 inch,10 inch...in 10 inch tv we
are seeing the same picture but in small size..so that we
need technology with variable amplitude and constant
frequency that is am...
best of luck..
| Is This Answer Correct ? | 45 Yes | 13 No |
Post New Answer View All Answers
What are the building blocks of a digital circuit?
What is forced commutation?
Why is silicon preferred over germanium in the manufacture of semiconductor devices?
What is location update? Why do we need location update?
What is the ideal op-amp CMRR ?
what is the difference between three point staret &four point starter
What is the difference between demultiplexer and decoder?
Tell me, when a sample of germanium and silicon having same impurity density are kept at room temperature then resistivity of silicon will be higher than that of germanium, why?
What is satellite cooding in telecom transmission system?
What do you understand by leds?
Explain why are using 4ma to 20ma for signal transfer. Why not 0 to 20ma?
can any one help me out by posting something related to rvnl interview for site engineer electronics (S & T).? what is the procedure? what type of question they generally ask? how long the interview goes for one candidate? and any tips ??
Explain what is pulse logic system?
why the backwheel of tractor is bigger than frontwheel?
what is a router how it woks? what is a compromised router in networks?how it works? what is a packet loss and packet dropping? what is a malicious packet?when it occurs?