Name________________________ No: _____ Date _____________ Score
Activity 1
Introduction to Hydropower Energy
A. Explain the following briefly:
1. Why is the hydrologic cycle or water cycle important in running a hydroelectric
power plant?
2. What causes the turbine of a hydroelectric power plant to rotate?
3. What happens to the power produced when more water will flow through the
turbine of a hydroelectric power plant?
4. What happens to the power produced when water will fall from a greater height in
a hydroelectric power plant?
5. Why is a hydroelectric power plant considered to be a source of renewable energy?
B. Solve the problems given below. Show your solutions neatly and
systematically.
6. A site which is a mountain stream has an effective head of 25 feet, turbo-generator
efficiency of 0.85 and a modest flow rate of 210 cubic feet per second.
a. Calculate the power (in kilowatt) generated of the site.
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RENEWABLE ENERGY | M-3
Name________________________ No: _____ Date _____________ Score
b. How many kWh will it generate for 1 day?
7. The US Agency that measures the river flow of a 10-feet dam learns that the river
produces an average amount of 500 cubic feet per second of water flowing.
a. Calculate the power produced in kilowatts if the turbine and generator has an
efficiency of 80%.
b. How many kWh will this generate in one day?
c. How many kWh will this generate in one year?
d. Supposing that each person uses an average amount of 3,000 kWh of energy
in one year, how many people does this river could serve?
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RENEWABLE ENERGY | M-3