MCCCD Program Description

Power and Instrumentation

Course: WRT205

First Term: 2011 Spring

Lecture 3 Credit(s) 3 Period(s) 3 Load
Subject Type: Occupational
Load Formula: S

Description: Principles of basic electricity, electrical circuits, motors, transformers, and process control instrumentation.

MCCCD Official Course Competencies
1. Describe the nature of flow of electricity. (I) 2. Describe the primary sources of electricity. (I) 3. Define voltage, current, resistance, capacitance, and inductance. (I) 4. Given a list of materials, identify their conductive properties. (I) 5. Describe the difference between parallel and series circuits. (I) 6. Define cycle, frequency, and power factor. (I) 7. Describe the difference between a Y and a Delta A-C circuit. (I) 8. Describe how single phase motors work and identify the fundamental parts of the single phase motor. (I) 9. Describe how three phase motors work and identify the fundamental parts of a three phase motor. (I) 10. Describe the principles of a transformer and its application. (I) 11. Describe the four essential functions of an automatic control system. (I) 12. Identify process variables in water and wastewater processes. (II) 13. Explain the difference between open loop control and closed loop control. (II) 14. Define the terms linear response and nonlinear response. (II) 15. Describe the response of a basic eletrical transducer. (II) 16. Identify three types of pressure sensors. (II) 17. Name the two basic parts of a pressure transducer. (II) 18. Name the common types of primary devices for measuring fluid flow. (II) 19. Describe the similarities and differences between a rotometer and an orifice instrument. (II) 20. Describe the structure and function of a weir. (II) 21. Describe the structure and function of a Parshall flume. (II) 22. Describe tghe operating principles governing turbine meters. (II) 23. Explain the principle of a sonic meter. (II) 24. Describe the components of a control valve. (II) 25. Describe the operation of diaphram and pneumatic actuators. (II)
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. Power A. Electrical Energy 1. Electrical Language 2. Nature of Electricity 3. Application of Basic Chemistry in Electricity B. Sources of Electricity 1. Primary Sources of Electricity 2. Electricity from Chemical Action - Batteries 3. Voltage Produced by Magnetism C. Voltage, Current and Resistance 1. Potential Difference 2. Electric Current 3. Resistance - OHM`s Law 4. Resistance & Voltage Drop D. Electrical Components 1. Resistance of Materials 2. Function of Resistance - Resistors 3. Capacitance - Capacitors 4. Inductance - Inductors E. Conductors 1. Properties of Conductor Materials 2. Conductor Size and Classification F. Circuits 1. D-C Circuits a. Parallel and Series b. OHM`s Law Applied c. Power Relationships 2. A-C Circuits a. Waveforms b. Cycle c. Frequency d. Faradays Law e. Current, Voltage and Resistance in A-C Circuits f. A-C Power g. Power Factor G. Three-Phase Circuits 1. Y-Connection 2. Delta Connection 3. Y & Delta Connected Loads 4. A-C Power Measurement H. Motors 1. Single Phase a. Operating Principles b. Parts I. Transformers 1. Fundamentals of Operations 2. Transformer Application II. Instrumentation A. Introduction to Process Control 1. Nature of Process Control 2. Elements of Process Control 3. Process Control Signals 4. Symbols and Diagrams 5. Process Control Loop Operations B. Foundations of Measurement Instrumentation 1. Introduction to Process Measurement 2. Basic Process Measurement Systems a. Process Variable b. Linear Response c. Nonlinear Response 3. Principles of Transducer Operation 4. System Standards and Instrument Calibration C. Force, Weight, Pressure and Motion Measurement 1. Application of Principles of Pressure Measurement in Liquids and Gases a. Pressure Sensors b. Pressure Transducers D. Flow Measurement Applications 1. Properties of Fluid Flow in Hydraulics 2. Primary Measuring Devices 3. Secondary Measuring Devices 4. Variable Area Instruments a. Rotometer b. Orifice Instrument 5. Open Channel Flow Devices a. Weir b. Parshall Flume 6. Positive Displacement Meters 7. Turbine and Magnetic Flow Meters 8. Metering Solids - Sonic Meter E. Final Control Elements 1. Final Control Elements in Process Loops 2. Electric Actuators 3. Pneumatic and Hydraulic Actuators 4. Control Valves 5. Control Element Applications B. Pump pressurization C. Compression tank D. Calculations for tank size XV. Chilled Water Systems A. Constant volume B. Variable volume C. Similarities and differences XVI. Low Temperature Water Systems A. Low temperature water systems B. Heat sources C. Temperature D. Pressures XVII. Dual Temperature System A. Interconnection- terminal end B. Interconnection- generator C. Interconnection -both ends XVIII. High Temperature Water Systems A. Design parameters B. Flash suppression C. Blending different temperatures D. Pumps in high water service E. User end high temperature water F. Water recirculation G. Type and location of expansion and pressurization means

MCCCD Governing Board Approval Date: 11/23/2010

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.