Q. In case of long penstocks, ___________________ is generally provided so as to absorb water hammer pressure.

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Q. To avoid the possible damage to the wicket gates and turbine runners _________________ is provided.

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Q. Identify the correct statement in regard to hydropower.

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Q. The surge tank serves which of the following purposes?

i. It allows the sediment to settle down
ii. It prevents debris from entering powerhouse
iii. It controls pressure variations in pipelines
iv. It regulates flow in the pipelines

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Q. Forebay provides temporary storage before the water goes to the turbine. Following perform the function of forebay ____________________

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Q. The Pumps in series operation allow the head to increase and the pumps in parallel operation increase the flow rate.

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Q. Consider the following statements.

i. Runoff river plants can be located on any river
ii. Runaway speed of a turbine is generally 180% of normal speed
iii. Underground power stations are suited to areas susceptible to landslides
iv. Higher the specific speed, higher will be the discharge and the head

Which of these statements are correct?

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Q. Pick the correct choice of turbine required to generate 10,000 HP under a head of 81 m while working at a speed of 500 rpm.

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Q. A draft tube is essentially required for impulse type turbines.

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Q. If the specific speed in revolution per minute of a turbine is in between 60 to 300, the type of the turbine is ________________

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Q. If two identical pumps each capable to deliver a discharge Q against a head H are connected ___________________________

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Q. For a hydropower plant working on 150 m head, the water is sandy and the load on the plant is highly variable. Which type of turbine will generally be recommended?

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Q. For a hydropower plant having 150 m head of stored water behind the dam. The water in the reservoir is clear and load on the powerhouse is not likely to fluctuate much. Which type of turbine will be suitable for the same?

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Q. In a Francis turbine, the water flows through a closed draft tube.

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Q. In a reaction turbine like a Francis turbine or a Kaplan turbine ______________

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Q. An impulse turbine like a Pelton’s turbine is __________________________

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Q. Kaplan turbines are found to be more versatile and costly in their initial cost as compared to propeller turbines.

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Q. An impulse turbine is essentially a __________________

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Q. Which of the following is turbine is used for medium heads ranging from 25 to 150 meters?

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Q. Which of the following is an example of an impulse turbine?

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