Water enters a turbine at 900 kPa with negligible velocity. What maximum speed, in m/s, can it reach before it enters the turbine rotor?
- A. 42
- B. 47
- C. 45
- D. 52
Answer: A. 42
Explanation: Converting pressure head to kinetic head: $P/\rho = V²/2$. $V = \sqrt{2P/\rho} = \sqrt{2 \times 900000 / 1000} = \sqrt{1800} \approx 42.4$.