Test 1

Question 1

Process Variable

Answer 1

Dependent variable this is to be controlled in a control system.

Question 2

Control Variable

Answer 2

Independent variable in a process.

Question 3

Controller

Answer 3

Controls control variable in a process.

Question 4

Primary Element

Answer 4

Detects process variable. (thermal couple)

Question 5

Final Element

Answer 5

Receives signal from controller and regulates the amount of material or energy in a process.

Question 6

Self Regulation

Answer 6

Tank filling and depleting at the same time.

Question 7

Exothermic

Answer 7

Gives off heat.

Question 8

Endothermic

Answer 8

Takes in heat.

Question 9

Process Dynamics

Answer 9

Gain, Dead time, and lag.

Question 10

Load Changes

Answer 10

Changing the process variable, and having to compensate by changing control variable.

Question 11

Gain

Answer 11

Ratio of the change in output to the change in input of a process. (Linear)

Question 12

Dead Time

Answer 12

First change made into first measured.

Question 13

Lag

Answer 13

First measured to complete.

Question 14

Types of Gain

Answer 14

Linear, Nonlinear

Question 15

What causes lag.

Answer 15

Capacitance and Resistance

Question 16

Capacitance

Answer 16

The ability of a process to store material or energy.

Question 17

Resistance

Answer 17

An opposition to the potential that moves material or energy in or out of a process.

Question 18

Feedback

Answer 18

(closed loop) The controller monitors the results of its actions.

Question 19

Feedforward

Answer 19

(open loop) Sends a control signal to a final element but does not verify the results of the control.

Question 20

Control Loop

Answer 20

Primary element -> Controller -> Final Element ->

Question 21

Control Action

Answer 21

Direct Control, Reverse Control.

Question 22

Bumpless Transfer

Answer 22

A controller function that eliminates any sudden change in output when switching from automatic to manual.

Question 23

Control Strategies

Answer 23

On/Off, Proportional, Integral, Derivative.

Question 24

On/Off

Answer 24

Two position control strategy, options being on and off.

Question 25

Proportional

Answer 25

Changes output of a controller in proportion to the error.

Question 26

Integral

Answer 26

Changes output in proportion to error and the duration of the error. (Faster)

Question 27

Derivative

Answer 27

Changes output in proportion to the rate of change of the PV. (Slower)

Question 28

Adaptive Gain Control

Answer 28

Nonlinear gain can be applied to a nonlinear process.

Question 29

Cascade Control

Answer 29

Multiple loop control system where the primary variable is changed by changed the setpoint of a secondary controller.

Question 30

Ratio Control

Answer 30

Control system in which the rate of one flow is controlled proportional to the rate of another.

Question 31

Neural Networks

Answer 31

computer program that receives multiple inputs and human input to arrive at and educated output.