Mechanical Engineering :: Hydraulic Machines
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The speed of an imaginary turbine, identical with the given turbine, which will develop a unit power under a unit head, is known as
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For centrifugal pump impeller, the maximum value of the vane exit angle is
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In a reaction turbine, the pressure head of water, while flowing over the vanes, is converted into kinetic head before leaving the wheel.
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Manometric head, in case of a centrifugal pump, is equal to
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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
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In an impulse turbine, the jet of water impinges on the bucket with a low velocity and after flowing over the vanes, leaves with a high velocity.
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The capacity of a hydraulic accumulator is generally specified as the maximum amount of energy stored.
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The maximum efficiency of jet propulsion of a ship with inlet orifices at right angles to the direction of motion of ship, is
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The breast water wheels are those in which the wheel runs partly by the weight of water and partly by the impulse of water.
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The ratio of quantity of liquid discharged per second from the pump to the quantity of liquid passing per second through the impeller is known as
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A.
Suction lift + Loss of head in suction pipe due to friction + Delivery lift + Loss of head in delivery pipe due to friction + Velocity head in the delivery pipe
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B.
Workdone per kN of water - Losses within the impeller
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C.
Energy per kN at outlet of impeller - Energy per kN at inlet of impeller
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D.
all of the above
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