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PLC Chapter 1-4 Part 1

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College PLC 301 Quiz on PLC Chapter 1-4 Part 1, created by second_second101 on 01/10/2015.
second_second101
Quiz by second_second101, updated more than 1 year ago
second_second101
Created by second_second101 over 9 years ago
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Resource summary

Question 1

Question
Select the main functions of a PLC
Answer
  • Replacing Relay Logic
  • Replacing programmable logic
  • Timing
  • Processing digital signals
  • Processing analog signals
  • Saving energy compared to relay
  • Comparing
  • Counting
  • Calculating

Question 2

Question
The structure of a PLC isn't based on any other electronic; their design is unique to themselves.
Answer
  • True
  • False

Question 3

Question
A PLC eliminates the mess of hardwiring that relay controls require
Answer
  • True
  • False

Question 4

Question
Which function control responds faster to data.
Answer
  • Programmable Logic Control
  • Relay Logic Control

Question 5

Question
The PLC has a [blank_start]_____[blank_end] cost compared to relay logic controls.
Answer
  • lower

Question 6

Question
If an application requires more than a [blank_start]half-dozen[blank_end] of control relays, a PLC will probably be more cost effective
Answer
  • half dozen

Question 7

Question
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
Answer
  • download
  • gathering
  • monitoring
  • control

Question 8

Question
PLCs are easier to trouble shoot thanks to built-in [blank_start]resident diagostics[blank_end] and [blank_start]override[blank_end] functions
Answer
  • resident diagostics
  • override

Question 9

Question
The term architecture can refer to:
Answer
  • PLC hardware
  • PLC software
  • A combination of both
  • None the given answers
  • PLC hardware, PLC software, or to a combination of both.

Question 10

Question
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.
Answer
  • open architecture
  • easily
  • devices

Question 11

Question
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
Answer
  • closed architecture
  • design
  • connect

Question 12

Question
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].
Answer
  • fixed
  • together

Question 13

Question
[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.
Answer
  • Modular
  • greatly

Question 14

Question
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.
Answer
  • DC
  • rack
  • does not

Question 15

Question
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.
Answer
  • microprocessor
  • CPU
  • logic
  • controlling
  • processing

Question 16

Question
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.
Answer
  • memory
  • logical

Question 17

Question
What is an I/O system?
Answer
  • 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.
  • I/O system forms the interface by which field devices are connected to the controller.
  • 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.

Question 18

Question
Input devices are hardwired to [blank_start]Input terminals[blank_end]
Answer
  • Input terminals

Question 19

Question
Examples of input devices include:
Answer
  • Push buttons
  • Limit switches
  • Mice
  • Keyboard
  • Sensors

Question 20

Question
Examples of Output devices include:
Answer
  • Small Motors
  • Motor Starters
  • Large Motors
  • Spindle
  • Solenoid Valves

Question 21

Question
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
Answer
  • optical isolator

Question 22

Question
External devices are referred to as [blank_start]field devices[blank_end] or [blank_start]Real-world[blank_end] devices
Answer
  • field devices
  • Real world

Question 23

Question
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.
Answer
  • relay ladder logic
  • most popular
  • memory

Question 24

Question
A programming language that instead of using letters, ladder logic programming uses symbols to show their intended outcome.
Answer
  • True
  • False

Question 25

Question
A program in ladder logic isn't similar to a schematic for a relay control circuit.
Answer
  • True
  • False

Question 26

Question
Name the most popular programming device for a PLC
Answer
  • A Computer
  • A Dedicated Programming Device
  • A Gameboy

Question 27

Question
A program is a user developed set of [blank_start]instructions[blank_end] for the PLC to [blank_start]execute[blank_end].
Answer
  • instructions
  • execute

Question 28

Question
What input device is this?
Image:
dde438fb-44ec-4622-abd5-6bd89de01d5b (image/png)
Answer
  • Solenoid
  • Push Button
  • Temperature Switch
  • Motor Starter Coil

Question 29

Question
What is the purpose of each value in a Rack/Slot address?
Image:
81e9f0b3-b9b7-4feb-a6bb-b6a68d9129d0 (image/png)
Answer
  • File Type
  • File Number
  • File Delimiter
  • File Delimiter
  • File No.
  • File Type
  • File Type
  • File No.
  • File Delimiter
  • Rack No.
  • Group no.
  • File Delimiter
  • Rack No.
  • Group No.
  • Terminal Number
  • File Delimiter
  • Bit Delimiter
  • Bit Address
  • Terminal Number
  • File Number
  • Group Number

Question 30

Question
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
Answer
  • accepts
  • converts
  • reverts

Question 31

Question
An output interface device [blank_start]converts[blank_end] controller signals into external signals used to control the machine or the process
Answer
  • converts

Question 32

Question
The hardware assembly which houses the I/O modules, processor modules, and power supplies is called a [blank_start]chassis[blank_end]
Answer
  • chassis

Question 33

Question
An addressable unit consisting of 128 input points and 128 output points is called a [blank_start]logical rack[blank_end]
Answer
  • logical rack

Question 34

Question
What kind of module does a remote I/O use to communicate with the processor module?
Answer
  • Communication Module
  • Email Module
  • Breakfast
  • Rope and Cups

Question 35

Question
Which of the following programmable logic controlers uses a Rack/Slot based addressing scheme?
Answer
  • Allen-Bradley PLC-5
  • SLC 50
  • Allen-Bradley ControlLogix
  • SLC 60
  • STC 50
  • Allen-Bradley PLC 60

Question 36

Question
Which of the following PLCs use a tag based addressing scheme?
Answer
  • SLC 50
  • SLC 60
  • SLC 70
  • SLC 40
  • Allen-Bradley ControlLogix
  • SLC ControlLogix

Question 37

Question
The most common I/O interface is the ___ type.
Answer
  • Discrete
  • Analog
  • Loud
  • Digital

Question 38

Question
A discrete I/O interface connects field input devices of the ON/OFF nature such as selector switches,
Answer
  • True
  • False

Question 39

Question
The classification of discrete I/O covers bit oriented inputs and outputs.
Answer
  • True
  • False

Question 40

Question
Each [blank_start]discrete[blank_end] I/O module is powered by some field supplied voltage source
Answer
  • discrete

Question 41

Question
Discrete I/O modules receive power from the:
Answer
  • backplane through the PLC module power supply
  • backplane through the CPU module power supply
  • backplane through the communication module power supply

Question 42

Question
A switch that opens and closes a circuit either electromechanically, or electronically is called a [blank_start]relay[blank_end]
Answer
  • relay

Question 43

Question
Individual AC outputs are usually limited by the size of the triac to
Answer
  • 1A or 2A
  • 2A or 3A
  • 1A or 4A

Question 44

Question
An [blank_start]optical Isolator[blank_end] is used to provde electrical isolation between the power and logic circuitry
Answer
  • optical Isolator

Question 45

Question
Certain DC I/O modules specify whether the module is designed for interfacing with current-source or current-sink devices.
Answer
  • True
  • False

Question 46

Question
A sinking digital I/O (input/output) provides a [blank_start]grounded[blank_end] connection to the load
Answer
  • grounded

Question 47

Question
A sourcing digital I/O provides a [blank_start]voltage[blank_end] source to the load
Answer
  • voltage

Question 48

Question
If the module is current-source, then the input or output device must be [blank_start]current-sinking[blank_end]
Answer
  • current-sinking

Question 49

Question
Analog input and output devices have how many possible number of values?
Answer
  • Infinite
  • 2
  • 3
  • 6
  • 5
  • 7

Question 50

Question
Typical analog inputs and outputs vary from:
Answer
  • 0 to 20 milliamps
  • 4 to 20 milliamps
  • 0 to 10 volts
  • 0 to 10 milliamps
  • 4 to 20 volts

Question 51

Question
The two basic type of analog input modules are [blank_start]voltage[blank_end] sensing and current sensing.
Answer
  • voltage

Question 52

Question
The main element of the analog input module is an analog to digital (A/D) converter
Answer
  • True
  • False

Question 53

Question
[blank_start]Bipolar[blank_end] input modules can accept signals that swing between a negative and positive value.
Answer
  • Bipolar

Question 54

Question
[blank_start]Unipolar[blank_end] input modules can accept an input signal that varies in the positive direction only.
Answer
  • Unipolar

Question 55

Question
[blank_start]Resolution[blank_end] refers to the smallest change in input signal value that can be sensed
Answer
  • Resolution
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