The net available head H in a Pelton turbine installation is the
- Akinetic energy of the jet issuing from nozzle
- Bdifference in elevation between forebay water level and the nozzle outlet
- Chead at the base of the nozzle
- Ddifference in level between water levels at the forebay and the tailwater levelCorrect
Solution
Concept
Net head
Step-by-step solution
1. Net head = gross head − losses = head at the base of the nozzle. 2. The key gives the level difference between forebay and tailwater.
Explanation
The question as worded is textbook-specific.
Why the other options are wrong
Others are not the net head.
Correct answer: D) difference in level between water levels at the forebay and the tailwater level