In a hydroelectric installation, a turbine delivers 1500 hp to a generator, which in turn transfers 80.0% of the mechanical energy out by electrical transmission. Under these conditions, what current does the generator deliver at a terminal potential difference of 1910 V?

Answer 1

There are a few different horsepower definitions - imperial, metric, DIN etc but an average conversion factor is 1hp = 745W

Generator input = 1500 * 745 W = 1117500W
Generator output = 1117500W * 80.0% = 894000W (3 sig figs)
Current = 894000W / 1910V = 468.06A