PRODUCTION OF ELECTRICAL ENERGY Questions

Electrical and Electronic Engineering - EEE

Semester: First Semester

Level: 300

Year: 2018

QUESTION I (17 points)

1. Nome three types of hydroelectric power plants. (3 pts)

2. Explain the difference between a base load and a peak load generating plant. (2 pts)

3. What type of hydroelectric turbines is used in low head systems? (1 pt)

4. Why are nuclear power stations not suited to supply peak loads? (2 pts)

5. What is pressure energy? (2 pts)

6. Give two reasons why electric utility systems are interconnected. (2 pts)

7. State the advantages and drawbacks of using low voltage transmission lines. (3 pts)

8. What is the best indicator of stability (or instability) of an electric utility system? (2 pts)

QUESTION II (13 points)

A hydroelectric dam has a penstock of 12 m in diameter that discharges 10

kg/s of water. The head of the dam

is 80 m.

a. Compute the volume of the discharged water per second (flow rate). (2 pts)

b. Compute the power of the water entering the turbine. (3 pts)

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. (4 pts)

d. Compute the speed of' water at the outtake of the penstock. (4 pts)

UNIVERSITY OF BAMENDA

COLLEGE OF TECHNOLOGY

CONTINUOUS ASSESSMENT / PRODUCTION OF ELECTRICAL

ENERGY

Code: EEEP3106 / Time: 1h30min Pr NFAH /FOTSO Raoul

www.schoolfaqs.net