Learners study how a DC motor generates counterelectromotive force. A short quiz completes the object.
The Multi-Loop Armature of a DC Motor
By Terry Bartelt
In this animated object, learners study the drawbacks of a single-loop armature of a DC motor and the advantages of a multi-loop armature.
Learners view an animation showing how the volume of a given quantity of gas varies directly with its temperature.
Incremental Encoder Quadrature Modes
Learners study the method of using more than one track and quadrature modes to improve the resolution of an optical encoder. A brief quiz completes the activity.
Op Amp Fundamentals: The Transconductance Amplifier
By Patrick Hoppe
Students read an introduction to the transconductance amplifier. They also view formulas for voltage-to-current conversion, closed-loop input, and output impedance. An example of how R1 controls the conversion factor is given.
Oscilloscope: DC Voltage Measurements
Learners follow step-by-step instructions for using an oscilloscope to measure DC voltages.
Students view a graphical explanation of how the motor condition (unloaded, 50 percent loaded, fully loaded) affects the phase between voltage and current, the current draw from the AC supply, the amount of power consumed, and the power factor.
An Inductor Opposing a Current Change
Learners read how an inductor opposes a current change when it begins to energize and when it begins to de-energize. A short quiz completes the activity.
Series RC Circuit Practice Problems
By James Bourassa, John Rosz
In this interactive object, students calculate capacitive reactance, phase angle, impedance, and power in series RC circuits.
The 12 Cranial Nerves
By Barbara Liang
In this interactive and animated object, learners read a description of the number, name, and function of the cranial nerves. A matching quiz completes the activity.
CTIS Vocabulary Words 2
2nd six weeks vocabulary words (some physical science and some force and motion)
Identify these 25 neurological terms in a marathon game of Hangmoon!
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