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I am studying for the NYS PE exam and have 2 questions.
1. Are the terms "boost" & "Buck" used only for referencing auto-transformers, and "Step-up" & "Step-down" used for ideal transformers?
2. assuming I was given a 3 phase source with a phase sequence of a,b,c and I can choose Vca to be the reference, what is the correct angle for the two other voltages? I have solved it as
Vca angle of 0
Vab angle of 120
Vbc angle of -120
Although I would assume it to be correct a past exam had conjugate angles for the latter two.
What is correct?
1. Are the terms "boost" & "Buck" used only for referencing auto-transformers, and "Step-up" & "Step-down" used for ideal transformers?
2. assuming I was given a 3 phase source with a phase sequence of a,b,c and I can choose Vca to be the reference, what is the correct angle for the two other voltages? I have solved it as
Vca angle of 0
Vab angle of 120
Vbc angle of -120
Although I would assume it to be correct a past exam had conjugate angles for the latter two.
What is correct?