Consider the following statements with regard to hydraulic turbines:
1) Kaplan turbines are most efficient at part load operation.
2) If n is the number of jets in a Pelton turbine, then the specific speed is proportional to n2
3) The flow ratio of Francis turbines are in the range of 0.1 – 0.3
Which of the above statements is/are correct?1
1, 2 and 3
2
1 and 2 only
3
1 and 3 only
4
2 and 3 only