Q. The efficiency of a reaction turbine for a given head __________ with the increase in speed.

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Q. In an impulse turbine, the pressure of water both at entering and leaving the vanes, is atmospheric.

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Q. Which of the following pump is successfully used for lifting water from deep wells?

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Q. The Thomson's turbine is __________ reaction turbine.

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Q. In an outward flow reaction turbine

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Q. A hydraulic press is a device used

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Q. The flow ratio in case of Francis turbine varies from

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Q. Which of the following turbine is preferred for a specific speed of 60 to 300 r.p.m.?

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Q. The number of buckets on the periphery of a Pelton wheel is given by

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Q. The undershot water wheels are those in which

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Q. A turbine is required to develop 1500 kW at 300 r.p.m. under a head of 150 m. Which of the following turbine should be used ?

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Q. Which of the following pump is suitable for small discharge and high heads?

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Q. The gross or total head of the turbine is the __________ of the water levels at the head race and tail race.

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Q. The specific speed of a centrifugal pump may be defined as the speed of an imaginary pump, identical with the given pump, which will discharge one litre of water, while it is being raised through a head of one metre.

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Q. The specific speed of a turbine is the speed of an imaginary turbine, identical with the given turbine, which

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Q. The runaway speed of a hydraulic turbine is the speed

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Q. The cavitation in a hydraulic machine

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Q. The type of centrifugal pump preferred for a specific speed of 20 r.p.m. is

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Q. If the net positive suction head (NPSH) requirement for the pump is not satisfied, then

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Q. A turbine develops 10000 kW under a head of 25 metres at 135 r.p.m. Its specific speed is

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