What will be the output frequency of a...

Question 1 / 270705eccefa4bacbc34ba4d48146

Question 1 of 270705eccefa4bacbc34ba4d48146

What will be the output frequency of a three-phase, six pole, AC generator operating at 1800 revolutions per minute?

Question 1 of 27070

What will be the output frequency of a three-phase, six pole, AC generator operating at 1800 revolutions per minute?

🔍 Key Concepts

• Relationship between generator speed (rpm), number of poles, and output frequency (hertz) • Standard formula used for synchronous AC machines • Typical power system frequency used on many ships and in the U.S.

💭 Think About

• How does increasing the number of poles affect the frequency for the same rpm: does it make frequency higher or lower? • Write down the formula connecting speed (N), poles (P), and frequency (f), then plug in N = 1800 rpm and P = 6. • First, try the formula with an easier example (like 2 poles at 3600 rpm) to see what frequency that gives and use that as a reference.

✅ Before You Answer

• Be sure you are using rpm (revolutions per minute) and then converting correctly to hertz (cycles per second) within the formula. • Confirm you are using the correct formula for a synchronous generator and that poles are counted as total poles, not pole pairs. • After calculating, compare your result with common ship/shore power frequencies (e.g., 50 Hz or 60 Hz) to see if your answer seems reasonable.

Question 1 of 27070

What will be the output frequency of a three-phase, six pole, AC generator operating at 1800 revolutions per minute?

60 hertz

90 hertz

120 hertz

180 hertz