Physics (AS & A Level) · Oct / Nov 2017 · Paper 11 · Question 19

A turbine at a hydroelectric power station is situated 30 m below the level of the surface of a large lake. The water passes through the turbine at a rate of 340 m^3 per minute. The overall efficiency of the turbine and generator system is 90%. What is the output power of the power station? (The density of water is 1000 kg m^-3.)

1. A0.15 MW
2. B1.5 MW
3. C1.7 MW
4. D90 MW

As printed in the paper