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Voltage Regulation

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In this animated activity, learners examine how the speed of a motor may change if the voltage from the power source fluctuates due to power line irregularities. This lesson has audio content.

Sizing Motor Overloads

By Terry Bartelt, Pat Jensen

Learners use the National Electrical Code to determine the size of a motor overload protection device.

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Parallel Circuit Analysis Practice Problems: Circuit #8

By Patrick Hoppe

In this interactive object, learners solve for total resistance and current, the current through each resistor, the voltage across each resistor, and the power dissipated by each resistor.
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Parallel Circuit Analysis Practice Problems Part 2

By Patrick Hoppe

In this interactive object, students work 11 practice problems and solve for total resistance and current, the current through each resistor, the voltage across each resistor, and the power dissipated.
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Weight-Volume Relationships: Saturated Unit Weight

By Steve Whitmoyer

Students read how to determine and calculate the saturated unit weight for a given sample of soil or aggregate, based on the weight-volume relationship. Practice problems complete the activity.

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12.5k
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Power Law Practice Problems #2

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