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 two modes of mosfet?
Please somebody tell me the call flow for MO & MT call with diagram & complete explaination ?
What is hybrid parameter?
Why r-c filters are suitable only for light loads?
Give an Example for negative feedback and positive feedback?
radar
What are the properties of FFT? What happens when you pass a signal of 1000Hz through an FFT?????
What is a flip-flop?
What is current commutation?
What principle does a q-meter operate?
What are the types of commutation? (Or) turn off methods?
What is difference between FR & GB over IP
sir, pls mail me the previous question papers of RRB Junior Engineer Gr-II Drawing
Explain why is 400 hz used for flight instruments and radio transmission system in aviation industry universally?
What is step up chopper?