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

In this animated activity, learners examine the difference between opens and shorts in an electrical circuit. A brief quiz completes the object.

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

In this animated object, learners examine the switch settings for the on-delay, off-delay, and one-shot timing functions of an optical sensor. A brief quiz completes the activity.

Students read the rules used in multiplying and dividing signed numbers. They view examples and work practice problems.

Students read how to organize their work when multiplying more than two signed numbers. A review and practice problems complete the activity.

Learners follow the steps for adding and subtracting signed numbers and complete practice exercises.

Learners work problems to make conversions between RMS, average, peak, and peak-to-peak AC voltages.

In this animated object, learners examine the formulas used to convert peak, RMS, average, and peak-to-peak AC voltages. A brief quiz completes the activity.

Match the numbers in spanish

Finde die Zahl.

Arrange the number on either ascending or descending order

Reading sight words