The efficiency of a centrifugal pump will be maximum when the blades are bent backward.

More Questions from Hydraulic Machines

• In a reaction turbine, the draft tube is used
• The capacity of a hydraulic accumulator is generally specified as the maximum amount of energy stored.
• In a reciprocating pump, air vessels are fitted to the suction pipe and delivery pipe close to the cylinder of the pump.
• Multi-stage centrifugal pumps are used to
• The breast water wheels are those in which the wheel runs partly by the weight of water and partly by the impulse of water.
• The ratio of actual work available at the turbine to the energy imparted to the wheel is known as __________ efficiency.
• A hydraulic coupling belongs to the category of
• The force exerted by a jet of water (in a direction normal to flow) impinging on a fixed plate inclined at an angle θ with the jet is
• In a reaction turbine, the pressure head of water, while flowing over the vanes, is converted into kinetic head before leaving the wheel.
• A Francis turbine is used when the available head of water is

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