Study Material: Controllers and Control Systems - Flashcard Set (12206-16)

The purpose of the output signal from a controller is to

manipulate the final element to maintain a desired process condition

Cascade control occurs when a controller receives its setpoint from

another remote controller

When a controller is placed in local control, the only way to change the setpoint is to

manually change it with the setpoint adjustment

In a pneumatic controller, the component that determines the output signal is the

flapper and flapper nozzle

An example of discrete control is a(n)

on/off switch

The range of measured variable values that a final element moves through as the output from a proportional controller changes is known as the

proportional band

A controller reacting to a process disturbance with a correction action is using

feedforward control

In a basic type of electronic controller, which component adjusts the difference between the input signal and the setpoint to a useable size?

The amplifier

The most basic type of electronic controller has a control motor that is used to

position a final element

The purpose of the derivative in an electronic controller is to

delay the signal to the unbalance detector