12/21/2024 10:06:32 PM	ELEC 53.14 Course Outline as of Spring 2012	Inactive Course
CATALOG INFORMATION
Discipline and Nbr:  ELEC 53.14	Title:  BASIC ROTATING MACHINERY
Full Title:  Basic Rotating Machinery for Maintenance Technicians
Last Reviewed:1/31/2005

Units		Course Hours per Week			Nbr of Weeks	Course Hours Total
Maximum	2.00	Lecture Scheduled	2.00		17.5 max.	Lecture Scheduled	35.00
Minimum	2.00	Lab Scheduled	0		8 min.	Lab Scheduled	0
		Contact DHR	0			Contact DHR	0
		Contact Total	2.00			Contact Total	35.00
		Non-contact DHR	0			Non-contact DHR Total	0

Total Out of Class Hours:  70.00

Total Student Learning Hours: 105.00

Title 5 Category:  AA Degree Applicable
Grading:  Grade or P/NP
Repeatability:  00 - Two Repeats if Grade was D, F, NC, or NP
Also Listed As: 
Formerly:  ELEC299.43

Catalog Description:

Basics of rotating machinery including both DC and AC motors and generators.  Includes three phase and single phase rotating machinery.

Prerequisites/Corequisites:

Recommended Preparation:
Course Completion of ELEC 53.13 ( or ELEC299.42)

Limits on Enrollment:

Schedule of Classes Information
Description:

Basics of rotating machinery including both DC and AC motors and generators.  Includes three phase and single phase rotating machinery.

(Grade or P/NP)
Prerequisites:
Recommended:Course Completion of ELEC 53.13 ( or ELEC299.42)
Limits on Enrollment:
Transfer Credit:
Repeatability:00 - Two Repeats if Grade was D, F, NC, or NP

ARTICULATION, MAJOR, and CERTIFICATION INFORMATION

Associate Degree:		Effective:		Inactive:
Area:
CSU GE:	Transfer Area			Effective:	Inactive:
IGETC:	Transfer Area			Effective:	Inactive:
CSU Transfer:		Effective:		Inactive:
UC Transfer:		Effective:		Inactive:
C-ID:

Certificate/Major Applicable: Certificate Applicable Course

COURSE CONTENT

Outcomes and Objectives:
At the conclusion of this course, the student should be able to:

Upon completion of the course the student will be able to:

 1.  Analyze the operating principles of several different types

     of AC and DC motors.

 2.  Compile proper safety procedures for working around motors and

     rotating machinery.

 3.  Originate and apply proper tag-out procedures when working on

     electrical equipment.

 4.  Evaluate and repair commutator and slip ring problems.

 5.  Evaluate and repair defective rectifiers in alternators.

 6.  Identify and evaluate various motor starting problems.

 7.  Describe the operation and principles of squirrel cage rotators

     in induction motors.

Topics and Scope

1. Safety

2. Magnetism

  a. poles

  b. fields

  c. repulsion

  d. attraction

  e. permeability

  f. residual magnetism

3. Electromagnetism

  a. flux density

  b. field strength

  c. hysterisis

  d. effect of current increase and decrease

4. Counter current generation back EMF, Lenz's Law connection

5. Generators, basics of generating electric current, effects of magnetic

 field strength, speed of magnetic field cutting with a conductor,

 number of wires cut by magnetic fields

6. AC generation, (alternators) single phase machines

  a. slip rings-brushes

  b. rotating armature, stationary fields

  c. rotating fields, stationary armature

  d. self excitation

  e. external excitation

7. AC generation, (alternators) poly phase machines

  a. rotating armature, stationary fields

  b. rotating fields, stationary armature

  c. self excitation

  d. external excitation

8. Alternators with DC outputs

  a. rectification

  b. single phase

  c. poly phase

9. Types of machines

  1. series wound

     a. adding fields

     b. opposing fields

  2. shunt wound

  3. compound wound

     a. series-parallel

     b. parallel-series

10. DC Motors

   a. Series motors characteristics

   b. Shunt motor characteristics

   c. Compound motor characteristics

11. AC Motors, series (universal motors)

   a. characteristics

   b. comparison to DC series motors

12. AC Motors, induction

   a. Rotating magnetic fields-generation of

   b. Single phase rotating fields-generation of

   c. Poly-phase rotating fields-generation of

   d. Transformers and transformer action

   e. Eddy currents

   f. Stators

   g. Rotors

   h. Squirrel cage rotors

   i. Starting current

   j. Stall current

   k. Run current

13. Starting Single Phase Motors

   a. Synchronous motors

   b. Shaded pole motors

   c. Capacitor start

   d. Resistance start

14. Motor Controllers

   a. DC

   b. AC

Assignments:

Application of concepts and problem solving in the following areas:

1. Compare, in writing, the operating principles of AC and DC motors.

2. Demonstrate and utilize proper safety techniques when working with

motors.

3. Inspect and repair commutators, slip rings and rectifiers.

4. Assess the operation of squirrel cage rotators use in induction motors.

Methods of Evaluation/Basis of Grade.

Writing: Assessment tools that demonstrate writing skill and/or require students to select, organize and explain ideas in writing.		Writing 5 - 10%
Written homework
Problem solving: Assessment tools, other than exams, that demonstrate competence in computational or non-computational problem solving skills.		Problem Solving 20 - 50%
Homework problems
Skill Demonstrations: All skill-based and physical demonstrations used for assessment purposes including skill performance exams.		Skill Demonstrations 20 - 50%
Class performances, Performance exams
Exams: All forms of formal testing, other than skill performance exams.		Exams 10 - 30%
Multiple choice, True/false, Matching items, Completion
Other: Includes any assessment tools that do not logically fit into the above categories.		Other Category 0 - 0%
None

Representative Textbooks and Materials:

Electric Motors and Drives - Fundamentals, Types & Applications, 2nd ed.

Hughes, Austin. Publisher: Butterworth-Heineman, 1993.

Rotating Electrical Machines and Power Systems. Patrick, Dale R. and

Fardo, Stephen W. Prentice-Hall, 2000.

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