Noun
a type of hydroelectric turbine
Source: WordNetFrom left to right: Pelton wheel, two types of Francis turbine and Kaplan turbine. Source: Internet
Reversible turbine-generator assemblies act as both a pump and turbine (usually a Francis turbine design). Source: Internet
The shut off butterfly valve for a Francis turbine at Gordon Power Station, Tasmania Ball valve A closed soft seated valve is much less liable to leak when shut while hard seated valves are more durable. Source: Internet
This type of turbine is usually a Deriaz or Francis turbine in design. Source: Internet