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Quiz von second_second101, aktualisiert more than 1 year ago
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Erstellt von second_second101
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Frage 1
Frage
Select the main functions of a PLC
Antworten
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Replacing Relay Logic
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Replacing programmable logic
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Timing
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Processing digital signals
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Processing analog signals
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Saving energy compared to relay
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Comparing
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Counting
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Calculating
Frage 2
Frage
The structure of a PLC isn't based on any other electronic; their design is unique to themselves.
Antworten
- True
- False
Frage 3
Frage
A PLC eliminates the mess of hardwiring that relay controls require
Antworten
- True
- False
Frage 4
Frage
Which function control responds faster to data.
Antworten
-
Programmable Logic Control
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Relay Logic Control
Frage 5
Frage
The PLC has a [blank_start]_____[blank_end] cost compared to relay logic controls.
Antworten
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lower
Frage 6
Frage
If an application requires more than a [blank_start]half-dozen[blank_end] of control relays, a PLC will probably be more cost effective
Antworten
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half dozen
Frage 7
Frage
Communications Capability - A PLC can communicte with other computer based systems to perform functions such as supervisory [blank_start]control[blank_end], data [blank_start]gathering[blank_end], [blank_start]monitoring[blank_end] devices and process parameters, and [blank_start]download[blank_end] and upload of programs
Antworten
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download
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gathering
-
monitoring
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control
Frage 8
Frage
PLCs are easier to trouble shoot thanks to built-in [blank_start]resident diagostics[blank_end] and [blank_start]override[blank_end] functions
Antworten
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resident diagostics
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override
Frage 9
Frage
The term architecture can refer to:
Antworten
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PLC hardware
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PLC software
-
A combination of both
-
None the given answers
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PLC hardware, PLC software, or to a combination of both.
Frage 10
Frage
An [blank_start]open architecture[blank_end] design allows the system to be connected [blank_start]easily[blank_end] to [blank_start]devices[blank_end] and programs made by other manufacturers.
Antworten
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open architecture
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easily
-
devices
Frage 11
Frage
A system with a [blank_start]closed architecture[blank_end], is one whos [blank_start]design[blank_end] is proprietary, making it more difficult to [blank_start]connect[blank_end] to other systems
Antworten
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closed architecture
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design
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connect
Frage 12
Frage
A [blank_start]fixed[blank_end] I/O is typical of small PLC's that come in one package with no separate, removable units. The processor and I/O are packaged [blank_start]together[blank_end].
Antworten
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fixed
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together
Frage 13
Frage
[blank_start]Modular[blank_end] I/O is divided by compartments into which separate modules can be plugged. This feature [blank_start]greatly[blank_end] increases youor options and the unit's flexibility.
Antworten
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Modular
-
greatly
Frage 14
Frage
The power supply provides [blank_start]DC[blank_end] power to all modules that plug into the [blank_start]rack[blank_end]. For large PLC systems, this power supply [blank_start]does not[blank_end] normally supply power to the field devices.
Antworten
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DC
-
rack
-
does not
Frage 15
Frage
The [blank_start]CPU[blank_end] consists of a [blank_start]microprocessor[blank_end] for implementing the [blank_start]logic[blank_end] and [blank_start]controlling[blank_end] the communications among the modules.
Antworten
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microprocessor
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CPU
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logic
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controlling
-
processing
Frage 16
Frage
The processor requires [blank_start]memory[blank_end] for storing the results of the [blank_start]logical[blank_end] operations performed by the microprocessor as well as the operating system and the PLC program.
Antworten
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memory
-
logical
Frage 17
Frage
What is an I/O system?
Antworten
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A system with a closed architecture, is one whos design is proprietary, making it more difficult to connect to other systems
-
An open architecture design allows the system to be connected easily to devices and programs made by other manufacturers.
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I/O system forms the interface by which field devices are connected to the controller.
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A programming device is used to enter the desired program into the memory of the processor. The program can be entered using relay ladder logic which is one of the most popular programming languages.
Frage 18
Frage
Input devices are hardwired to [blank_start]Input terminals[blank_end]
Antworten
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Input terminals
Frage 19
Frage
Examples of input devices include:
Antworten
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Push buttons
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Limit switches
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Mice
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Keyboard
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Sensors
Frage 20
Frage
Examples of Output devices include:
Antworten
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Small Motors
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Motor Starters
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Large Motors
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Spindle
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Solenoid Valves
Frage 21
Frage
In order to isolate internal components from the input and output terminals, PLCs often employ an [blank_start]optical isolator[blank_end], which uses light to coupe the circuits
Antworten
-
optical isolator
Frage 22
Frage
External devices are referred to as [blank_start]field devices[blank_end] or [blank_start]Real-world[blank_end] devices
Antworten
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field devices
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Real world
Frage 23
Frage
A programming device is used to enter the desired program into the [blank_start]memory[blank_end] of the processor. The program can be entered using [blank_start]relay ladder logic[blank_end] which is one of the [blank_start]most popular[blank_end] programming languages.
Antworten
-
relay ladder logic
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most popular
-
memory
Frage 24
Frage
A programming language that instead of using letters, ladder logic programming uses symbols to show their intended outcome.
Antworten
- True
- False
Frage 25
Frage
A program in ladder logic isn't similar to a schematic for a relay control circuit.
Antworten
- True
- False
Frage 26
Frage
Name the most popular programming device for a PLC
Antworten
-
A Computer
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A Dedicated Programming Device
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A Gameboy
Frage 27
Frage
A program is a user developed set of [blank_start]instructions[blank_end] for the PLC to [blank_start]execute[blank_end].
Antworten
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instructions
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execute
Frage 28
Antworten
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Solenoid
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Push Button
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Temperature Switch
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Motor Starter Coil
Frage 29
Frage
What is the purpose of each value in a Rack/Slot address?
Antworten
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File Type
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File Number
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File Delimiter
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File Delimiter
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File No.
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File Type
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File Type
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File No.
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File Delimiter
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Rack No.
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Group no.
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File Delimiter
-
Rack No.
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Group No.
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Terminal Number
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File Delimiter
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Bit Delimiter
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Bit Address
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Terminal Number
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File Number
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Group Number
Frage 30
Frage
An input interface module [blank_start]accepts[blank_end] signals from the machine or process devices and convert them into signals that can be used by the controller
Antworten
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accepts
-
converts
-
reverts
Frage 31
Frage
An output interface device [blank_start]converts[blank_end] controller signals into external signals used to control the machine or the process
Antworten
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converts
Frage 32
Frage
The hardware assembly which houses the I/O modules, processor modules, and power supplies is called a [blank_start]chassis[blank_end]
Antworten
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chassis
Frage 33
Frage
An addressable unit consisting of 128 input points and 128 output points is called a [blank_start]logical rack[blank_end]
Antworten
-
logical rack
Frage 34
Frage
What kind of module does a remote I/O use to communicate with the processor module?
Antworten
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Communication Module
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Email Module
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Breakfast
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Rope and Cups
Frage 35
Frage
Which of the following programmable logic controlers uses a Rack/Slot based addressing scheme?
Antworten
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Allen-Bradley PLC-5
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SLC 50
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Allen-Bradley ControlLogix
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SLC 60
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STC 50
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Allen-Bradley PLC 60
Frage 36
Frage
Which of the following PLCs use a tag based addressing scheme?
Antworten
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SLC 50
-
SLC 60
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SLC 70
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SLC 40
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Allen-Bradley ControlLogix
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SLC ControlLogix
Frage 37
Frage
The most common I/O interface is the ___ type.
Antworten
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Discrete
-
Analog
-
Loud
-
Digital
Frage 38
Frage
A discrete I/O interface connects field input devices of the ON/OFF nature such as selector switches,
Antworten
- True
- False
Frage 39
Frage
The classification of discrete I/O covers bit oriented inputs and outputs.
Antworten
- True
- False
Frage 40
Frage
Each [blank_start]discrete[blank_end] I/O module is powered by some field supplied voltage source
Antworten
-
discrete
Frage 41
Frage
Discrete I/O modules receive power from the:
Antworten
-
backplane through the PLC module power supply
-
backplane through the CPU module power supply
-
backplane through the communication module power supply
Frage 42
Frage
A switch that opens and closes a circuit either electromechanically, or electronically is called a [blank_start]relay[blank_end]
Antworten
-
relay
Frage 43
Frage
Individual AC outputs are usually limited by the size of the triac to
Antworten
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1A or 2A
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2A or 3A
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1A or 4A
Frage 44
Frage
An [blank_start]optical Isolator[blank_end] is used to provde electrical isolation between the power and logic circuitry
Antworten
-
optical Isolator
Frage 45
Frage
Certain DC I/O modules specify whether the module is designed for interfacing with current-source or current-sink devices.
Antworten
- True
- False
Frage 46
Frage
A sinking digital I/O (input/output) provides a [blank_start]grounded[blank_end] connection to the load
Antworten
-
grounded
Frage 47
Frage
A sourcing digital I/O provides a [blank_start]voltage[blank_end] source to the load
Antworten
-
voltage
Frage 48
Frage
If the module is current-source, then the input or output device must be [blank_start]current-sinking[blank_end]
Antworten
-
current-sinking
Frage 49
Frage
Analog input and output devices have how many possible number of values?
Antworten
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Infinite
-
2
-
3
-
6
-
5
-
7
Frage 50
Frage
Typical analog inputs and outputs vary from:
Antworten
-
0 to 20 milliamps
-
4 to 20 milliamps
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0 to 10 volts
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0 to 10 milliamps
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4 to 20 volts
Frage 51
Frage
The two basic type of analog input modules are [blank_start]voltage[blank_end] sensing and current sensing.
Antworten
-
voltage
Frage 52
Frage
The main element of the analog input module is an analog to digital (A/D) converter
Antworten
- True
- False
Frage 53
Frage
[blank_start]Bipolar[blank_end] input modules can accept signals that swing between a negative and positive value.
Antworten
-
Bipolar
Frage 54
Frage
[blank_start]Unipolar[blank_end] input modules can accept an input signal that varies in the positive direction only.
Antworten
-
Unipolar
Frage 55
Frage
[blank_start]Resolution[blank_end] refers to the smallest change in input signal value that can be sensed
Antworten
-
Resolution
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