I would like to apply for Master of Science about electrical engineering, in USA. Most universities require 3 letters of recommendation and I am a little confused about from whom to get them.
I scored a very high GPA but I did not participate in any kind of research activities. However, there are many professors that know me very well, particularly my enthusiasm, my potential, my passion to learn new things and my ability to critical think and judge the information without taking it for granted.
I want to apply to the schools with the "electronics, semi-conductors" branch.
However, the professors who know me well are from : 1) electrical engineering, power electronics area 2) electrical engineering, computer branch and 3) mathematics department, I took differential equations and calculus from this professor.
I want to ask the followings:
1) Are old professors regarded more important or less important compared to younger professors ?
2) Is it OK to take letter of recommendation from a professor in another discipline or even different faculty, knowing that he will write a very good letter ?
3) Is a letter of recommendation from a famous faculty member that does not know me very well is better than a letter of recommendation from a less well-known professor that knows me very well ?
4) Is a professor that did his/her Masters or doctorate in USA regarded as more important compared to ones who did not ?