RPO880 EXAMINATION:30 JUNE

WebQuest for firs year University (Electrical engineering)
Subject : AC generator
Topic: AC generators theory
Time : 1 hour
Designed by
Abdalwahed Elsafi
Abdlwahedelsafi@yahoo.com

INTRUDUCTION - TASK - PROCESS - EVALUATION - CONCULOSION

Introduction:

In order to understand the AC generator theory, we need to have know about:
Components and physical process of an ac generators. the strongly magnetic field that produce as the result of current flow via field coil of rotor, slip rings and brushes are produced excitation, this excitation received by field coil in the part rotate the continually of operation can be made by connection between the field and external excitation.

TASK

You well divided in a group consist of four as flowing:
Group (1): why that necessary to understand theory of operation?
Group (2): what are components of an AC generator?
Group (3): how do we calculate the efficiency and losses of an AC generator?
Group (4): how do you controlling in the frequency of an ac generator?

Process:

The flowing steps have been out lined for you to help you to become more understanding of your role to answer on the task.
1. You well divided in the group of four.
2. Each student in the group well have specific job.
3. Make sure every one clearly understands his/her responsibility.
4. Once the groups are informed what they are going to do, you well brainstorm what roles are needed and how to fulfill it.
5. You well need to share and discuss you information after gathering from the internet.
6. You well need to have papers to write or note the information getting from the internet.
Area for research:
You well need to know about the flowing addresses that help you to collect information thought the internet.
Group (1): understand theory of operation. Click in the link below.
http://www.ibiblio.org/kuphaldt/socratic/output/acgen.pdf
Group (2): The components of ac generators. Click in the link below.
http://answers.yahoo.com/question/index?qid=20081117075417AADM7YT
Group (3): calculate the efficiency and losses of ac generators. Click in the link below.
http://www.tpub.com/content/doe/h1011v3/css/h1011v3_107.htm .

http://www.scribd.com/doc/18238222/k?secret_password=1nw344q4qhz0v9zjb6zf
Group (4): controlling in the frequency of ac generators. Click in the link below.
http://www.ab.com/support/abdrives/documentation/fb/1024.pdf
http://www.tpub.com/content/doe/h1011v3/css/h1011v3_106.htm
Note : here you can find resources related to video, text, animation and graphics that help all four groups to fulfill your tasks successfully; you can go through the flowing links:
Video:
http://www.youtube.com/watch?v=ZVJ-W_aYi44
Animation in:
http://www.machines.cg.ac.yu/rig.htm
3 phase excitation:
http://www.machines.cg.ac.yu/ind_3phase.htm
Rotating magnetic field:
http://www.edumedia-sciences.com/en/a500-rotating-magnetic-field
Graphics:
http://www.flickr.com/photos/39722272@N03/?saved=1
After the information is gathering, you must complete the information in to a PowerPoint presentation for the entire group your presentation must include at least six slides, and then send me a copy in Abdalwahedelsafi@yahoo.com.

Note: you must use your mobile(mobie properties) to achieve your tasks.
Evaluation:
Your evaluation in for of quiz, please click here. to fine the quiz.
Conclusion:
Congratulation! After complete the task you will learn theory of Ac generators, and basic components of generators, that help you to understand and analysis the behaviors of machines in the operation.
1. How did you feel about that?
2. Does this support your learning experiences?

Reference:
http://www.ibiblio.org/kuphaldt/socratic/output/acgen.pdf
http://www.usna.edu/EE/ee301/Handouts/ACSynchronousGeneratorsSupplement.pdf
http://www.ee.iastate.edu/~jdm/EE456/SynchMachines.pdf
http://www.global-b2b-network.com/direct/dbimage/50231589/AC_Synchronous_Generator.jpg
http://www.festo.com/rep/en-gb_gb/assets/FuP_Ref_10034ac_8_320px.jpg
http://images.google.com.sa/imgres?imgurl=http://www.motorlab.com/Motor%2520Lab%2520Web%2520Site_files/02%2520-%2520MotorLab%2520Facilities_files/Small%252520motor%252520Lab.jpg&imgrefurl=http://www.motorlab.com/Motor%2520Lab%2520Web%2520Site_files/02%2520-%2520MotorLab%2520Facilities.htm&usg=__OSTRB6AsK0cTBDAl8TSM6yG1oww=&h=533&w=711&sz=101&hl=ar&start=2&um=1&tbnid=KXsDfOvb5qgmdM:&tbnh=105&tbnw=140&prev=/images%3Fq%3Dmotor%2Blab%26hl%3Dar%26sa%3DN%26um%3D1

http://www.allproducts.com/manufacture100/udemachine/product2.jpg

http://www.school-for-champions.com/science/electrical_generation.htm

http://www.ab.com/support/abdrives/documentation/fb/1024.pdf

indicated on a matrix what tools you used for the web quest : how and why you used.