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

View solution

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

View solution

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

View solution

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?

View solution

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.

View solution

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

View solution

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

View solution

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

View solution

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?

View solution

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?

View solution

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

View solution

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

View solution

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

View solution

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

View solution

Q. An impulse turbine is essentially a __________________

View solution

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

View solution

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

View solution

Q. What is the highest elevation of water level that can be maintained in the reservoir without any spillway discharge either with gated or non-gated spillway?

View solution

Q. 400 cumecs of water are being released from dam storage to meet the downstream demand through the turbines of the connected hydro plant. The effective head of water acting on the turbines is 50 m. The efficiency of the hydro plant is 0.8. The electrical power generated from this plant is __________________

View solution

Q. If the peak load on a power plant having a capacity of 100 MW is 70 MW during a given week. Calculate the utilization factor.

View solution