A generator operating at 1846 rpm should ideally drive which type of generator pole?

To determine which type of generator pole matches an operating speed of 1846 rpm, it is essential to understand the relationship between the number of poles in the generator and its synchronous speed. The synchronous speed (in revolutions per minute) of a generator can be calculated using the formula:

[ \text{Synchronous Speed (N)} = \frac{120 \times f}{P} ]

where ( f ) is the frequency in hertz (Hz) and ( P ) is the number of poles.

For standard power systems, the frequency is often 60 Hz in many regions. Therefore, the formula can be rearranged to find the number of poles ( P ):

[ P = \frac{120 \times f}{N} ]

Plugging the values into the equation for a frequency of 60 Hz and a speed of 1846 rpm:

[ P = \frac{120 \times 60}{1846} ]

Performing the calculation provides the result for the number of poles, which can be simplified for clarity. Continuing with the calculation:

• ( 120 \times 60 = 7200 )

• ( P = \frac{7200}{1846} \approx 3