Gateway to Industry

Initial Assessment

Unit 17.1 - 17.2: Uses and Parts of Electric Motors

Unit 17.1 - 17.2: Knowledge Checks

Unit 17.3: Electric Motors and Magnetism

Unit 17.3: Knowledge Checks

Unit 17.4: Determining a Motor's Speed

Unit 17.4: Knowledge Checks

Unit 17.5 - 17.6: Start Windings and Start and Running Characteristics

Unit 17.5 - 17.6: Knowledge Checks

Unit 17.7: Electrical Power Supplies

Unit 17.7: Knowledge Checks

Unit 17.8: Single-Phase Open Motors

Unit 17.8: Knowledge Checks

Unit 17.9 - 17.11: Split-Phase Motors, the Centrifugal Switch, and the Electronic Relay

Unit 17.9 - 17.11: Knowledge Checks

Unit 17.12: Capacitor-Start Motors

Unit 17.12: Knowledge Checks

Unit 17.13: Capacitor-Start, Capacitor-Run Motors

Unit 17.13: Knowledge Checks

Unit 17.14: Permanent Split-Capacitor Motors

Unti 17.14: Knowledge Checks

Unit 17.15 - 17.16: Shaded-Pole and Three-Phase Motors

Unit 17.15 - 17.16: Knowledge Checks

Unit 17.17: Single-Phase Hermetic Motors

Unit 17.17: Knowledge Checks

Unit 17.18: The Potential Relay

Unit 17.18: Knowledge Checks

Unit 17.19: Troubleshooting the Potential Relay

Unit 17.19: Knowledge Checks

Unit 17.20: The Current Relay

Unit 17.20: Knowledge Checks

Unit 17.21: Positive Temperature Coefficient Resistor (PTCR)

Unit 17.21: Knowledge Checks

Unit 17.22: Troubleshooting the PTCR

Unit 17.22: Knowledge Checks

Unit 17.23 - 17.25: Two-Speed Compressor Motors, Special Application Motors, and Three-Phase Compressor Motors

Unit 17.23 - 17.25: Knowledge Checks

Unit 17.26: Variable-Speed Motors

Unit 17.26: Knowledge Checks

Unit. 17.27: DC Converters (Rectifiers)

Unit 17.27: Knowledge Checks

Unit 17.28: Inverters and Variable Frequency Drives (VFDs)

Unit 17.28: Knowledge Checks

Unit 17.29: Electronically Commutated Motors (ECMs)

Unit 17.29: Knowledge Checks

Unit 17.30: Cooling Electric Motors

Unit 17.30: Knowledge Checks

Unit 18.1: Motor Applications

Unit 18.1: Knowledge Checks

Unit 18.2: The Power Supply

Unit 18.2: Knowledge Checks

Unit 18.3 - 18.4: Electric-Motor Working Conditions and Insulation Type or Class

Unit 18.3 - 18.4: Knowledge Checks

Unit 18.5: Types of Bearings

Unit 18.5: Knowledge Checks

Unit 18.6: Motor Mounting Characteristics

Unit 18.6: Knowledge Checks

Unit 18.7: Motor Drives

Unit 18.7: Knowledge Checks

Unit 19.1 - 19.2: Introduction to Motor Control Devices and Full-Load and Locked-Rotor Amperage

Unit 19.1 - 19.2: Knowledge Checks

Unit 19.3: The Relay

Unit 19.3: Knowledge Checks

Unit 19.4: The Contactor

Unit 19.4: Knowledge Checks

Unit 19.5: Motor Starters

Unit 19.5: Knowledge Checks

Unit 19.6 - 19.8: Motor Protection, Inherent Motor Protection, and External Motor Protection

Unit 19.6 - 19.8: Knowledge Check

Unit 19.9 - 19.11: National Electrical Code Standards, Temperature-Sensing Devices, and Magnetic Overload Devices

Unit 19.9 - 19.11: Knowledge Checks

Unit 19.12: Restarting the Motor

Unit 19.12: Knowledge Checks

Unit 20.1 - 20.2: Motor Troubleshooting and Mechanical Motor Problems

Unit 20.1 - 20.2: Knowledge Checks

Unit 20.3: Removing Drive Assemblies

Unit 20.3: Knowledge Checks

Unit 20.4 - 20.5: Belt Tension and Pulley Alignment

Unit 20.4 - 20.5: Knowledge Checks

Unit 20.6: Electrical Problems

Unit 20.6: Knowledge Checks

Unit 20.7: Open Windings

Unit 20.7: Knowledge Checks

Unit 20.8: Shorted Motor Windings and Short Circuit to Ground

Unit 20.8: Knowledge Checks

Unit 20.10: Single-Phase Motor Starting Problems

Unit 20.10: Knowledge Checks

Unit 20.11: Checking Capacitors

Unit 20.11: Knowledge Checks

Unit 20.12: Identification of Capacitors

Unit 20.12: Knowledge Checks

Unit 20.13: Wiring and Connectors

Unit 20.13: Knowledge Checks

Unit 20.14: Troubleshooting Hermetic Motors

Unit 20.14: Knowledge Checks

Test