Whenever a synchronous machine operates at normal conditions, what is the relation between the rotor speed N in rpm, the frequency f in Hz, and the number of poles P?

Question

TuteeHUB · Accepted Answer

$N = \frac{{120\;f}}{{s\;P}}$

TuteeHUB · Answer

$f = \frac{{PN}}{{120}}$

TuteeHUB · Answer

$f = \frac{{120\;N}}{P}$

TuteeHUB · Answer

$N = s \times \frac{{120\;f}}{P}$

1.	Whenever a synchronous machine operates at normal conditions, what is the relation between the rotor speed N in rpm, the frequency f in Hz, and the number of poles P?
A.	\(f = \frac{{PN}}{{120}}\)
B.	\(N = \frac{{120\;f}}{{s\;P}}\)
C.	\(f = \frac{{120\;N}}{P}\)
D.	\(N = s \times \frac{{120\;f}}{P}\)
Answer» B. \(N = \frac{{120\;f}}{{s\;P}}\)

Whenever a synchronous machine operates at normal conditions, what is the relation between the rotor speed N in rpm, the frequency f in Hz, and the number of poles P?

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