Learners view a demonstration showing that line-neutral voltages and line-line voltages are not in-phase with each other, but have a definite 30-degree relationship.

Learners examine the basic elements of a machine vision system. A short quiz completes the activity.

Learners view the operation of an NPN transistor in the active region.

In this learning activity you'll explore how a fuse de-energizes a parallel circuit when too many lamps are connected to a power outlet.

Learners follow the steps required to perform the Ziegler-Nichols reaction curve process identification procedure.

Learners study the mathematical calculations used to determine the proper PID values to be entered into a controller using the Ziegler-Nichols Reaction Curve.

Learners examine an animated motion-controlled robotic arm and observe the operation of a PID (Proportional-Integral-Derivative) control that makes movements quickly without overshooting or having a steady-state error. This activity has audio content.

The learner calculates the resultant of multiple forces acting in a concurrent, coplanar load condition.

In this simulation, learners follow a series of steps to operate the Marvel Saw PCII in the manual mode. This activity includes a video clip.

Present simple or present continuous

TOPICS a) dot method subtraction B) addition think differently c) nikilam subtraction

Put the steps of the scientific method in the correct order.

science