Q. The ratio of actual work available at the turbine to the energy imparted to the wheel is known as __________ efficiency.

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Q. Geometric similarity is said to exist between the model and the prototype, if both of them

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Q. A Francis turbine is used when the available head of water is

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Q. The specific speed from 160 to 500 r.p.m. of a centrifugal pump indicates that the pump is

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Q. A hydraulic coupling belongs to the category of

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Q. The principle of jet propulsion is used in driving the ships and aeroplanes.

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Q. In the casing of a centrifugal pump, the kinetic energy of the water is converted into pressure energy before the water leaves the casing.

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Q. Which of the following pump is preferred for flood control and irrigation applications?

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Q. The efficiency of a Pelton wheel working under constant head __________ with the increase in power.

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Q. The discharge of a centrifugal pump working under constant head __________ with the speed.

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Q. The unit discharge through the turbine is

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Q. Delivery head of water of a centrifugal pump is inversely proportional to diameter of its impeller.

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Q. Power required to drive a centrifugal pump is directly proportional to __________ of its impeller.

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Q. The mechanical efficiency of an impulse turbine is

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Q. The overshot water wheels are those in which the wheel runs entirely by the __________ of water.

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Q. In a Kaplan turbine runner, the number of blades are generally between

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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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