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Center for Curriculum and Transfer Articulation
AC Machinery and DC Machinery
Course: ELC210

First Term: 1995 Fall
 Lecture   3 Credit(s)   3 Period(s)   3 Load  
Subject Type: Occupational
Load Formula: S


Description: Principles and operation of AC(Alternating current) and DC(direct current) motors, generators, and alternators. Includes single-phase motors along with induction, synchronous, and wound-rotor types of three-phase motors. DC motors including shunt-field, series field, wound rotor, permanent magnet, stepper and brushless types



MCCCD Official Course Competencies
1. Describe the construction and operation of single phase and three-phase AC generators. (I)
2. Describe the principle of induction between the field and the rotor for a DC machine. (I)
3. Compare the various types of field excitation, i.e., series, shunt and compound. (I, II)
4. Describe the use of brushes and commutators in the conversion of AC to DC. (II)
5. Describe the principle of induction between the field and the rotor for an AC machine. (III)
6. Explain the construction and operation of an AC induction motor including the squirrel-cage type of rotor. (III)
7. Explain the construction and operation of a wound-rotor type of AC motor. (IV)
8. Explain the construction and operation of a synchronous type of AC motor. (V)
9. Describe the techniques of field excitation used to vary the power factor output of a synchronous type of AC motor. (V)
10. Describe the characteristics of the voltage-current relationship in the starting and running modes for an AC motor. (VI)
11. Describe the techniques used for reduced voltage starting of AC motors. (VI)
12. Explain the operation of single phase AC motors along with the application of start-windings, i.e., split-phase, capacitor-start, etc. (VI)
MCCCD Official Course Competencies must be coordinated with the content outline so that each major point in the outline serves one or more competencies. MCCCD faculty retains authority in determining the pedagogical approach, methodology, content sequencing, and assessment metrics for student work. Please see individual course syllabi for additional information, including specific course requirements.
 
MCCCD Official Course Outline
I. Generators and Alternators
   A. Construction
   B. Operation
   C. Principle of induction
      1. Field
      2. Rotor
   D. Types of field excitation
      1. Series
      2. Shunt
      3. Component
II. DC Motors
   A. Series field
   B. Shunt field
   C. Brushless
   D. Stepper
   E. Permanent magnet
   F. AC to DC conversion
III. Induction Motor
   A. Squirrel-cage rotor
   B. Rotor induction
   C. Rotating field principle
   D. Synchronous speed and slip
   E. Torque production
   F. Efficiency and power factor
IV. Wound-Rotor Motor
   A. Basic construction/operation
   B. Rotor circuit
   C. Rotor current control
V. Synchronous Motor
   A. Basic construction/operation
   B. Rotor excitation
   C. Starting procedure
   D. Synchronization
   E. Field excitation
   F. Power factor correction/output
VI. Single phase motors - voltage/current
   A. Split-phase
   B. Capacitor start
   C. Shaded-pole
   D. Capacitor run
   E. Start-winding
   F. Run-winding
 
MCCCD Governing Board Approval Date:  2/28/1995

All information published is subject to change without notice. Every effort has been made to ensure the accuracy of information presented, but based on the dynamic nature of the curricular process, course and program information is subject to change in order to reflect the most current information available.