ipsilon is represented as a round bottomed v and as u in the transliteration in greek for beginners;????????

Answer 1

Do you mean upsilon?

http://www.ibiblio.org/koine/greek/lessons/alphabet.html

Upsilon (u):In the above table, we suggest that you pronounce this letter like "u" in "put". The preferred pronunciation is actually more like the German "ü" as in "Brücke", or like the French "u" as in "tu". If you do not speak German or French, don't worry about it, just pronounce it the way the table suggests.