. Ecosystems, political systems, and financial systems all have what in common with the systems engineer’s study?

They are technological in nature.

They are investigated using systems thinking.

They contain subsystems in different ways.

They demand complex energy inputs.

Aplate clutch has a single pair of mating friction surfaces 250-mm od by 175-mm id. the mean value of the coefficient of friction is 0.30, and the actuating force is 4 kn. a) find the maximum pressure and the torque capacity using the uniform-wear model. b) find the maximum pressure and the torque capacity using the uniform-pressure model.

Which of the following components of a pid controlled accumulates the error over time and responds to system error after the error has been accumulated? a)- proportional b)- derivative c)- integral d)- on/off.

The proportional limit is always greater than the yield strength for a material. a)-trune b)- false