PRODUCTION OF ELECTRICAL ENERGY (EEEP3106)
Electrical and Electronic Engineering - EEE
Semester: First Semester
Level: 300
Year: 2017
QUESTION I (12 points)
1. Name three types of hydroelectric power plants
2. Why are cooling towers used in thermal power plants
3. What type of hydroelectric turbines is used in low head systems
4. What type of hydroelectric turbines is used in high head systems?
5. What is pressure energy?
6. What are the parts of a power system?
7. State the advantages and drawbacks of using low voltage transmission lines.
8. State the advantages and disadvantages of using high voltage transmission lines.
QUESTION II (10 points)
A hydroelectric dam has a penstock of 12 m in diameter that discharges 10
5
kg/s of ’voter.
The head of the dam is 80 m.
a. Compute the volume of the discharged water per second (flow rate).
b. Compute the power of the water entering the turbine.
c. Assume that hydro efficiency is 0.95, the turbine efficiency is 0.9 and the generator
efficiency is 92%, estimate the generated electrical power.
d. Compute the speed of water at the outtakc of the penstock.
QUESTION II (8 points)
Figure 1 shows the main part of a substation. Identify them.
Figure 1 : Substation.
UNIVERSITY OF BAMENDA
COLLEGE OF TECHNOLOGY
CONTINUOUS ASSESSMENT / PRODUCTION OF
ELECTRICAL ENERGY
Code:EEEP3106 / Time: 2h Pr NFAH / FOTSO
Raoul
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