In this animated activity, learners examine the operation of normally open and normally closed valves used in hydraulics. A brief quiz completes the learning object.

Learners examine the factors that contribute to the delays in the response time throughout a closed-loop system.

In this animated object, learners examine the operation of a closed-loop system that maintains the speed of a conveyer belt as heavy boxes are placed or removed.

Learners study an animated block diagram that describes the function of each element in a closed-loop system used in industrial automation.

In this animated and interactive object, learners examine a heat exchanger as an example of an automated closed-loop system.

In this animated object, learners examine a closed-loop feedback system that uses digital circuits to control the position of a gear rack.

In this animated object, learners examine an analog closed-loop feedback system that uses potentiometers to control the position of a gear rack.

In this animated object, learners examine the basic types of limit switches and how they are used.

In this learning activity you'll identify TCP and UDP port states and how they behave during interaction.

Students view the operation of a process controls system and examine the components and their function to prepare to work with the actual system.

In this animated lesson, students view the operation of an electromechanical relay. A brief quiz concludes the activity.

The inverting amplifier configuration is presented. The closed loop voltage gain and the closed loop bandwidth formulas are explained, along with the concept of negative feedback.

In this animated object, learners examine the signals produced at the N.O. (normally open) and N.C. (normally closed) outputs of sourcing and sinking four-wire sensors. A brief quiz completes the activity.

In this animated object, learners examine how an enclosed chambered metering system operates.

In this interactive and animated object, learners examine open and closed head injuries and the common causes and symptoms related to them.

Students are introduced to the non-inverting amplifier configuration. The formulas for closed loop gain and bandwidth are shown, and an example is given.

In this scenario, learners take the role of a delivery driver who must find a new travel route after the Interstate is closed to trucks. “Drivers” listen to traffic reports and write directions for a new route. This activity has audio content.

In this accounting learning object, students follow the steps involved in the closing process. Temporary accounts contain ending balances for a specified period and must be closed.

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.

Students read an explanation of the use of questionnaires in research. Open-ended and closed-ended questions are defined. Students complete the activity by generating a questionnaire.