The casing of radial flow reaction turbine is made of spiral shape, so that water may enter the runner                   

Related MCQs

• Radial flow reaction turbines contain spiral casing which area                        
• Volume flow rate of water in a Francis turbine runner is 25 m3/s. The flow velocity, whirl velocity and blade velocity are 11 m/s, 10 m/s and 5 m/s respectively, all values given at runner inlet. Find the power developed by the turbine.
• The main difference between reaction turbine and inward radial flow reaction turbine is water flows                     
• The main difference between reaction turbine and outward radial flow reaction turbine is water flows                    
• The outward radial flow reaction turbine is a turbine in which direction of water flow is
• Inward radial flow reaction turbine is a turbine in which water flows across the blades of runner_                        
• The water from penstocks enters the which is spiral in shape which the area of cross section of casing goes on decreasing gradually
• The volume flow rate into a Francis turbine is Q m3/s. 0.25Q m3/s volume of water do not flow over the runner blades. What is the mechanical efficiency of the turbine (in %)?
• The volumetric efficiency of a Francis turbine is given to be 90%. If the volume flow rate through the turbine is 25 m3/s. What is the flow rate of water over the runner blades (in m3/s)?
• The volume flow rate into a Kaplan turbine is Q m3/s. 0.10Q m3/s volume of water do not flow over the runner blades. What further information is required to find the volumetric efficiency (numerical value) of the Kaplan turbine?