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Hi all, I am wondering which discipline I should take for PE if I have a degree in environmental engineering, major in water treatment and what study material I should have to prepare for the exam. Will a PE be helpful to land a job in water? Thanks

when using the equation Ns=120f/p to calculate the number of poles, if the calculation result is something like 6.x, why the result should be size down to 6, in stead of 8? what about 7.x,? still 6 or 8? any rule behind? thanks

I saw examples choosing Sbase and Vbase, and then using different Vbase for different section. What's the basis for that? Thanks

this is from the testmaster problem set for power. I think the solution is wrong. what do you guys think?