Question

Consider the following types of water turbines            

1. Bulb

2. Francis

3. Kaplan

4. Pelton

The correct sequence of order in which the operating head decreases while developing the same power is

a. 4, 2, 3, 1                  b. 3, 4, 1, 2

c. 2, 1, 4, 3                  d. 1, 3, 2, 4