An engine operating at 1714 rpm and driving a 28 pole generator is most practical for what frequency output?

To determine the most practical frequency output of a generator driven by an engine, you can use the relationship between the speed of the engine (in revolutions per minute, rpm), the number of poles in the generator, and the output frequency (in hertz, Hz).

The formula to calculate the frequency of the output is:

[ \text{Frequency (Hz)} = \frac{\text{Number of poles} \times \text{Engine speed (rpm)}}{120} ]

In this scenario, the engine operates at 1714 rpm and drives a 28-pole generator. By substituting these values into the formula:

[ \text{Frequency (Hz)} = \frac{28 \times 1714}{120} ]

Calculating that gives:

[ \text{Frequency (Hz)} = \frac{48092}{120} = 400.7667 ]

Rounding it to a more practical figure results in approximately 400 Hz.

This frequency aligns well with industrial and aircraft applications, where 400 Hz is commonly used for power systems, particularly in aviation and some industrial processes. Therefore, the most practical frequency output for an engine running at 1714 rpm driving a 28-pole generator