time for Ph.D

[EngTechno]

How many years does a Ph.D student need to take to get Ph.D degree? I am not sure that time period for Ph.D.

[HallsofIvy]

Depends on the student and the program. Coming directly out of a bachelor's program, passing all of the "qualifying" exams the first time you take them, and taking only a year to write a dissertation, probably three years. If you already have a master's degree, subtract a year from that. If you are not REALLY ready to do difficult research add a year or three!

[EngTechno]

Depends on the student and the program. Coming directly out of a bachelor's program, passing all of the "qualifying" exams the first time you take them, and taking only a year to write a dissertation, probably three years. If you already have a master's degree, subtract a year from that. If you are not REALLY ready to do difficult research add a year or three!
Sir,
Taking directly Ph.D program without taking Master Degree is better than taking Master Degree before taking Ph.D program. Is this right? Can you explain me a little bit more detail?