Hydroelectric generators (see Figure 20.39) at Hoover Dam produce a maximum current of 8.00 10 3

Question:

Hydroelectric generators (see Figure 20.39) at Hoover Dam produce a maximum current of 8.00 × 103 A at 250 kV.

(a) What is the power output?

(b) The water that powers the generators enters and leaves the system at low speed (thus its kinetic energy does not change) but loses 160 m in altitude. How many cubic meters per second are needed, assuming 85.0% efficiency?

ER

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