"what is the relation between frequency and transmission of signals ?"
That is such an open-ended question one wonders where to start. But pretty much, the higher the frequency the more information one can transmit in a give time, different encoding methods notwithstanding.
And now I see the other questions. You're gunna fail.
i am a student of diploma in electronics and telecomm
can anyone suggest me projects related to the below domains:-
electrical and electronics