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Instrumentation

Commutator Inspection — Commutator Inspection
In iKnow

The ninth lesson in the iKNOW&reg AC/DC Motor Maintenance Library, this lesson shows participants how to identify some problems that affect the commutator. <br /><br />

Capacitance — Capacitance
In iKnow

This is the eighth lesson in the iKNOW Electrical Theory for Troubleshooters Library. This lesson explains capacitors, their function, and how capacitance affects AC circuits. <br /><br />

Building Electrical Diagrams — Building Electrical Diagrams
In iKnow

This is the sixth lesson in the iKNOW Electrical Print Reading Library. This lesson presents the different views used in electrical diagrams as well as how to identify components, cables, and conduits. The cable chart is also presented. <br /><br />

Brush Maintenance — Brush Maintenance
In iKnow

This is the final lesson in the iKNOW&reg AC/DC Motor Maintenance Library. The lesson describes how to select and inspect brushes. The lesson identifies the procedures for cleaning, inspecting, and setting the height of a brush holder. How to seat brushes and adjust spring pressure is demonstrated. <br /><br />

Basic Electrical Properties — Basic Electrical Properties
In iKnow

This is the second lesson in the iKNOW&reg Electrical Theory for Troubleshooters Library. This lesson covers Ohm's Law and the use of Ohm??s Law to calculate an unknown value. It also defines voltage, current, resistance, and power. <br /><br />

Armature Reaction, Compensation, and Induced Voltage — Armature Reaction, Compensation, and Induced Voltage
In iKnow

The eighth lesson in the iKNOW AC/DC Motor Theory Library, this lesson demonstrates armature reaction, compensation, and induced voltage. <br /><br />

Analog Multimeters — Analog Multimeters
In iKnow

This is the second lesson in the iKNOW&reg Multimeters Library. This lesson demonstrates various aspects of an analog multimeter, including how to adjust mechanical zero, how to interpret a reading on the voltage and resistance scales, and how to set the function and range switches. <br /><br />

Advanced Features of Digital Multimeters — Advanced Features of Digital Multimeters
In iKnow

The final lesson in the iKNOW Multimeters Library, this lesson instructs the participant in the use of the advanced features of digital multimeters. <br /><br />

Alternating Current — Alternating Current
In iKnow

This is the fifth lesson in the iKNOW&reg Electrical Theory for Troubleshooters Library. This lesson teaches the basic AC characteristics of voltage, including how voltage changes over time. The participant is also instructed in using sine waves to interpret the frequency of AC voltage. <br /><br />

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