Learners examine the speed control circuits in a DC variable speed drive that cause the RPM of a motor to vary. This activity has audio content.

This animated lesson shows how a photoelectric sensor, connected to a ladder circuit, causes the cylinder of a hydraulic circuit to extend and retract.

Students read an explanation of power factor correction. Examples of both inductive and capacitive loads are given.

Learners answer eight questions about capacitors. Help pages are available.

Learners examine how the load resistance connected to the secondary coil of a transformer affects the primary current. A brief quiz completes the activity.

Learners view animations and video clips showing how power is transmitted from one energized coil to another.

Students solve practice problems on voltage, current, and impedance matching. Examples precede the problems.

A sample exam for DC/AC I, unit # 12 is presented to the students. This unit covers transformers.

Learners study the effect of reflected and transmitted energy on the measurement of emitted energy by a non-blackbody. A short quiz completes the activity.

This game is designed to prepare you for your magnetism quiz.

Vocab from High Note 2, Unit 2, Section C

Terms and definitions

辨认方向