Brainscape's Knowledge GenomeTM

Browse over 1 million classes created by top students, professors, publishers, and experts.


See full index

Electrician Apprentice - Level 4 - Canadian > Automated Controls > Flashcards

Automated Controls Flashcards

1
Q

A part of the final control element that converts output signal into a force or energy that alters the process variable.

A

Actuator

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

Analog to Digital conversion

A

A to /D

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

An indication that some measured or controlled variable has exceeded some preset limit.

A

Alarm

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

Pertaining to a mechanism that represents data by measurement of a continuous physical variable, as voltage or pressure.

A

Analog

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

A pressure sensing element that converts a variable pressure input to a proportional force or displacement output.

A

Bellows

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

Representation of the control system in the simplest manner with each component shown by a block with input and output connections.

A

Block Diagram

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

A somewhat flatten tube which straightens out as more pressure is applied converting the pressure input into mechanical displacement.

A

Bourdon Tube

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

A controller produces a change in output signal in response to the error detected (difference between the desired value and actual value).

A

Closed Loop

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

Software or hardware which operates automatically to regulate a controlled variable. Compares the feedback signal to the set point signal and makes adjustments.

A

Controller

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

The function of measuring, transmitting and storing electrical signal information from sensors, transducers, and position indicators. Typically includes conversion into computer compatible format.

A

Data Acquisition

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

Distributed Control System, a microprocessor based system similar to a PLC but typically with multiple components distributed through the system and each of its components is controlled by a separate controller or controllers. This system of controllers is interconnected to each others for monitoring and communication.

A

DCS

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

The range in which an input may be changed without initiating any observable change in the output.

A

Dead Band

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

A component of a device or system.

A

Element

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

The difference between the desired value and the actual value of the process being controlled.

A

Error

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

Taking the error signal and sending it back to the controller for comparison to the set point.

A

Feedback

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

The component or equipment that converts the controller output signal into a type of energy that makes adjustments to the process variable.

A

Final Control Element

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
17
Q

A method of expressing the sensitivity of magnitude of response to an input.

A

Gain

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
18
Q

Human Machine Interface, used to allow operators to monitor or control a process, also called MMI (Man Machine Interface) or GUI (Graphic User Interface).

A

HMI

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
19
Q

An instrument or control equipment in which electrical energy is limited or contained so that it is incapable of creating a spark or otherwise igniting a flammable mixture.

A

Intrinsically Safe

20
Q

A sensor for the measurement of force or weight usually based on strain gauges.

A

Load Cell

21
Q

Linear Variable Differential Transformer, an AC device which measures displacement and converts it to a linear output voltage.

A

LVDT

22
Q

A restriction used to create a pressure drop proportional to the flow rate.

A

Nozzle

23
Q

Control action in which the measured variable is compared to the desired value to produce a signal which is acted on to reduce the magnitude or the error.

A

Negative feedback

24
Q

Difference between the desired value and the controlled variable when no changes are taking place.

A

Offset

25
Q

No feedback is used. Human completes the loop.

A

Open loop

26
Q

A simple type of restriction that creates a pressure drop proportional to the flow rate.

A

Orifice Plate

27
Q

The amount that a controlled variable exceeds it’s desired variable after an adjustment.

A

Overshoot

28
Q

Piping and Instrumentation Drawing or Diagram.

A

P + ID

29
Q

Proportional Integral Derivative Control

A

PID

30
Q

Feedback in which the error is added to the control signal resulting in a “runaway” condition.

A

Positive Feedback

31
Q

First element in a system that responds quantitatively to the measured variable.

A

Primary Element

32
Q

The variable that is controlled (temperature of an oven, level of a tank).

A

Process Variable

33
Q

The difference between the stated maximum and minimum measurements values.

A

Range

34
Q

The minimum amount that can be measured or controlled by a system or instrument.

A

Resolution

35
Q

Resistance Temperature Detector

A

RTD

36
Q

Remote Transmitter Unit

A

RTU

37
Q

Supervisory Control and Data Acquisition, refers to centralized computer based systems which monitor and control entire sites or complexes of systems spread out over large areas (anything between an industrial plant and a country). The Process can be industrial, infrastructure or facility based.

A

SCADA

38
Q

The change in output in response to a given input.

A

Sensitivity

39
Q

A device that converts a physical, electrical, or chemical variable into a useful proportional signal. It (senses) the process variable and usually provides feedback to a controller.

A

Sensor

40
Q

A control system primarily dedicated to position or velocity control.

A

Servo (Servomechanism)

41
Q

Provides information to the controller about the desired value of the process.

A

Set Point

42
Q

The condition where a balance is reached between the inputs of mass or energy to a system and the outputs of mass or energy from the system.

A

Steady State

43
Q

A sensor made from semiconductor material which changes it’s electrical resistance with temperature : generally known for its negative co-efficient response to temperature change.

A

Thermistor

44
Q

Two dissimilar wires used to create a millivolt thermoelectric temperature transducer.

A

Thermocouple (T/C)

45
Q

An element or device which converts one form of quantity or energy into another.

A

Transducer

46
Q

A device that converts a process variable measurement (temperature, flow, etc) into a suitable signal to be sent to a remote receiver (controller, recorder, etc).

A

Transmitter

Electrician Apprentice - Level 4 - Canadian (13 decks)

Brainscape helps you reach your goals faster, through stronger study habits.
© 2024 Bold Learning Solutions. Terms and Conditions