Which of the following part of Pelton turbine actively helps in meeting the variable demand of power?
- ABreaking jet
- BNozzle spear arrangementCorrect
- CRunner and bucket
- DNone of above
Solution
Concept
Spear and nozzle regulation
Step-by-step solution
1. The spear in the nozzle is moved to change the jet diameter and hence the discharge. 2. This regulates the power output to match the load.
Explanation
Flow regulation is by the spear.
Why the other options are wrong
The breaking jet only stops the runner; runner and bucket do not regulate.
Shortcut
Pelton governing = spear.
Correct answer: B) Nozzle spear arrangement