2. Systems and Control

A system that relies on feedback in order to operate is known as what?

• A closed-loop system

• A constant-loop system

• An open-ended system

• An open-loop system

Within a sub-system diagram, a system boundary is represented by what?

• A solid line

• An arrow

• A dashed line

• An arrow in and an arrow out

Which two of the following could be considered as outputs of a toaster?

• Heat energy

• Bread

• Toast

• Electricity

Complete the sentence: A transducer is...

• … a device that converts electrical energy into potential energy.

• … a form of kinetic energy.

• … a device that converts a physical quantity, such as pressure or brightness, into an electrical signal, or vice versa.

Which of the following is NOT a form of energy?

• Kinetic

• Sound

• Light

• Oil

Stored energy is otherwise known as _________ energy.

A Universal System Diagram will always require which THREE pieces of information?

• An output

• A process

• A feedback loop

• An input

True or false. Systems will always convert one form of energy into another?

• True

• False

The '+' symbol in an error detector represents what?

• Set value

• Actual value

• Positive terminal

In which THREE ways might efficiency be lost in a system?

• Electricity

• Friction

• Sound

• Heat