Maricopa Community Colleges  IEC103   19956-20006 
Official Course Description: MCCCD Approval: 05/23/95
IEC103 19956-20006 LEC 5 Credit(s) 5 Period(s)
Electrical A/C and D/C
Trigonometric and vector math, alternating current and direct current theory, inductance and transformer theory. Three phase, generators and single and three phase motor theory. Prerequisites: IEC101 or permission of instructor.
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MCCCD Official Course Competencies:
 
IEC103   19956-20006 Electrical A/C and D/C
1. Calculate trigonometry and vector problems. (I)
2. Explain specific theory of alternating currents. (II)
3. Explain the inductance and transform theory, calculate specific inductance and transformer problems. (III)
4. Explain capacitance and calculate specific problem. (IV)
5. Identify series circuits consisting of resistance, inductance and capacitance. (V)
6. Explain A/C power and resonance and calculate specific problems. (VI)
7. Explain the production of three-phase attending current, and identify the wye and delta connections. (VII)
8. Calculate specific problems relative to wye and delta attending current. (VIII)
9. Explain the operation of specific electrical meters. (IX)
10. Explain the construction and operation of DC and AC generators. (X)
11. Calculate specific generator problems. (XI)
12. Explain the operation of DC motors. (XII)
13. Identify the types of single-and three-phase motors and explain the operation of each. (XIII)
14. Compare and contrast specific single-and three-phase motors. (XIV)
15. Calculate locked rotor current on three-phase motors. (XV)
16. Identify and explain the overcurrent devices. (XVI)
17. Calculate wire size and select the proper overcurrent, disconnect and controller. (XVII)
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MCCCD Official Course Outline:
 
IEC103   19956-20006 Electrical A/C and D/C
    I. Trigonometry and Vector Math
        A. Trigonometry functions
        B. Right Trigonometry
        C. Vector mathematics
      II. Alternating current theory
          A. Production
          B. A/C wave form
          C. Resistive A/C circuits
        III. Inductance and transformers theory and calculation
            A. Explain
              1. Electromagnetism
              2. Inductance
              3. Mutual induction
              4. Transformers
            B. Calculate
              1. Electromagnetism
              2. Inductance
              3. Mutual induction
              4. Transformers
          IV. Capacitance
              A. Explain theory
              B. Calculate
            V. Series alternating circuits
                A. Identify
                  1. Resistive
                  2. Inductive
                  3. Capacitive
                  4. Combination
                B. Calculate
                  1. Resistive
                  2. Inductive
                  3. Capacitive
                  4. Combination
              VI. A/C power and resonance
                  A. Explain
                    1. Power
                    2. Power Factor
                    3. Total power
                    4. Power Factor Correction
                    5. Resonance
                  B. Calculate
                    1. Power
                    2. Power Factor
                    3. Total power
                    4. Power Factor Correction
                    5. Resonance
                VII. Three-phase prediction and identify wye and delta connections
                    A. Three phase production
                    B. Identify
                      1. Wye
                      2. Delta
                  VIII. Calculate specific wye and delta problems
                      A. Wye
                      B. Delta
                    IX. Electrical meter
                        A. Meter movements
                        B. Scales and dampening procedures
                        C. Rectifier
                        D. Shunts and meter ranges
                        E. Connection of meters
                      X. Generator construction and operation
                          A. D/C generators
                            1. Operation
                            2. Construction
                            3. Regulation
                          B. A/C generators
                          C. Motor generator
                          D. Dynamotor
                        XI. Calculate specific A/C- D/C generator problems
                            A. Voltage
                            B. Current
                            C. Frequency
                            D. Number of poles
                          XII. Operation of D/C motors
                              A. Component part
                              B. Armative and fields
                              C. Differences between D/C motor and D/C generator
                              D. Types of D/C motors
                            XIII. Identify single and three phase motors, explain operation.
                                A. Identify
                                  1. Single-phase
                                  2. Three-phase
                                B. Explain operation
                                  1. Single-phase
                                  2. Three-phase
                                  3. Specialty applications
                              XIV. Compare and contrast single and three phase motor
                                  A. Compare
                                    1. Specific types of single-phase
                                    2. Specific types of three-phase
                                    3. single to three-phase
                                  B. Contrast
                                    1. Specific types of single-phase
                                    2. Specific types of three-phase
                                    3. Single-to three-phase
                                XV. Three-phase locked rotor calculation
                                    A. Torque
                                    B. Bar Code
                                    C. Horsepower
                                  XVI. Overcurrent devices
                                      A. Identify
                                        1. Non-time delay fuse
                                        2. Time delay Fuse
                                        3. Instantaneous trip circuit beaker
                                        4. Inverse- time circuit breaker
                                    XVII. Calculate and Select wire size and overcurrent, disconnect and controller
                                        A. Calculate
                                          1. Overcurrent
                                          2. Disconnect
                                          3. Controller
                                          4. Wire size
                                        B. Select
                                          1. Overcurrent
                                          2. Disconnect
                                          3. Controller
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