Velocity triangles are used to analyze                        

Related MCQs

• Power developed by Francis turbine are calculated for a certain set of conditions. Now, the inlet whirl velocity is doubled, the blade velocity at inlet is doubled and the flow velocity is quartered. The power developed:
• 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.
• In the inlet velocity triangle of a Kaplan turbine, α1 = 45o. The velocity of flow at inlet = 10 m/s. Find the whirl velocity of water at the inlet of Kaplan turbine?
• The relative velocity of water at the inlet of the Kaplan turbine is 7 m/s. β1 = 75o. The whirl velocity of the water at inlet is 10 m/s. Find the blade velocity of the turbine?
• The force exerted by jet of the water having velocity V on a vertical plate moving with a velocity u is given by
• The force exerted by jet of the water having velocity V on a series of vertical plate moving with a velocity u is given by,
• Efficiency of the jet of the water having velocity V & Striking a series if vertical plates moving with a velocity u is given by,
• Efficiency off the jet of the water having velocity V & Striking a series of vertical plates moving with a velocity u, is maximum when
• The discharge over a rectangular weir, considering the velocity of approach, is (whereH1 = H + Ha = Total height of water above the weir, H = Height of water over the crest of the weir, and Ha = Height of water due to velocity of approach)
• To derive pav2, we take final velocity minus the initial velocity.