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Calculating Belt Length (Screencast)

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In this screencast, learners follow steps to determine the proper starting belt length for a timing, flat, or v-belt drive.

Identifying Lever Classes

By James Bourassa

In this interactive object, learners read an introduction to Class 1, Class 2, and Class 3 levers and then take a quiz.

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Functions of Hydraulic Oil

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Learners observe the four functions of oil in a hydraulic system.
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Series-Parallel Circuit Analysis: Practice Problems Circuit 1

By Patrick Hoppe

In this interactive object, learners analyze a series-parallel DC circuit problem in a series of steps. Immediate feedback is provided.
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Inductive Reactance Practice Problems

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Students solve problems on the determination of total inductive reactance of series-parallel inductors.
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