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Wheatstone Bridge — Wheatstone Bridge
In iKnow

This is the third lesson in the iKNOW&reg Ammeters, Meggers, and Wheatstone Bridge Library. This lesson explains what a bridge circuit is, the purpose and components of a Wheatstone bridge, and its function. <br /><br />

Using the Megohmmeter — Using the Megohmmeter
In iKnow

This is the second lesson in the iKNOW Ammeters, Meggers, and Wheatstone Bridge Library. This lesson describes safety issues to consider when using a megohmmeter, how to select the correct megger for the job, setup, and the steps necessary to take a megger reading. <br /><br />

Introduction to Megohmmeters — Introduction to Megohmmeters
In iKnow

This is the first lesson in the iKNOW&reg Ammeters, Meggers, and Wheatstone Bridge Library. This lesson explains Ohm??s Law and how it is used when analyzing test results. The basic components, uses, and functions of a megohmmeter are described. Insulation and causes of insulation damage are also covered. <br /><br />

Gate Valve Repair (A9101) — Gate Valve Repair (A9101)
In iKnow

This lesson addresses the procedures for disassembly, inspection, and reassembly of a typical gate valve. The lesson covers the locations and functions of valve components. Procedures for disassembling, inspecting, and measuring valve parts and procedures for lapping the disc and checking seat contact are also covered. <br /><br />

General Protective Equipment — General Protective Equipment
In iKnow

This is the eighth lesson in the iKNOW Electrical Safety Library. This lesson presents information about safeguards, other than Personal Protective Equipment worn on the body, used when working with or around electricity. Inspection, repair, and care of general protective equipment, and proper used of this equipment are presented. <br /><br />

Eye and Face Protection — Eye and Face Protection
In iKnow

This is the sixth lesson in the iKNOW Electrical Safety Library. This lesson explains the importance of eye and face protection, as well as the proper practices for its inspections, care and wear. <br /><br />

Electrical Shock — Electrical Shock
In iKnow

This is the third lesson in the iKNOW Electrical Safety Library. This lesson describes the effects electrical current has on the human body. Proper methods of removing a victim from an energized circuit are discussed. Who is qualified to perform a particular task and alerting techniques are introduced. <br /><br />

Transformers — Transformers
In iKnow

This is the final lesson in the iKNOW Electrical Theory for Troubleshooters Library. This lesson builds on the information presented in the lesson, Introduction to Transformers. How to determine primary current and voltage, secondary current and voltage, and load is taught. The function of various transformers is also explained. <br /><br />

Electrical Schematic Symbols- Input Devices — Electrical Schematic Symbols- Input Devices
In iKnow

This is the second lesson in the iKNOW Electrical Print Reading Library. The lesson presents the symbols for various manually and process actuated input devices and how they are represented on an electrical schematic. <br /><br />

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