Q. If Hg is the gross or total head and hf is the head lost due to friction, then net or effective head (H) is given by

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Q. 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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Q. For centrifugal pump impeller, the maximum value of the vane exit angle is

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Q. 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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Q. Manometric head, in case of a centrifugal pump, is equal to

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Q. 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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Q. The maximum number of jets, generally, employed in an impulse turbine without jet interference are

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Q. In a reciprocating pump, air vessels are fitted to the suction pipe and delivery pipe close to the cylinder of the pump.

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Q. Discharge (Q) of a centrifugal pump is given by (where D = Diameter of impeller at inlet, b = Width of impeller at inlet, and Vf = Velocity of flow at inlet)

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Q. A centrifugal pump will start delivering liquid only when the pressure rise in the impeller is equal to the

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Q. When the speed of the pump increases, its net positive suction head (NPSH) requirement decreases.

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Q. The speed of a turbine runner is

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Q. Discharge of a centrifugal pump is (where N = Speed of the pump impeller)

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Q. In a reaction turbine, the draft tube is used

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Q. The power produced by the reaction turbine is __________ to the head of water.

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Q. In an inward flow reaction turbine

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Q. The working of which of the following hydraulic units is based on Pascal's law?

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Q. The hydraulic efficiency of a reaction turbine, is the ratio of

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Q. In order to avoid cavitation in centrifugal pumps

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Q. A hydraulic intensifier is a device used to increase the intensity of pressure of water by means of energy available from a large quantity of water at a low pressure.

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