Physics (AS & A Level) · May / June 2017 · Paper 11 · Question 19

Water flows from a lake into a turbine that is a vertical distance of 90 m below the lake, as shown. The mass flow rate of the water is 2400 kg min⁻¹. The turbine has an efficiency of 75%. What is the output power of the turbine?

1. A26 kW
2. B35 kW
3. C1.6 MW
4. D2.1 MW

As printed in the paper