WorksheetsPLC REVISION
Total questions: 35
Worksheet time: 22mins
PLC is a
digital controller
Analog controller
array controller
Few applications of PLC are
Automatic doors
vending Machines
cereal filling systems
all of the above
the part of the PLC where inputs and outputs are connected are
input /output interface
memory
Processor
power supply
the plc stores its programs in
memory
programming device
power supply
input device
An example of a digital device used in PLC is
motors
pressure sensors
fan
switches
Identify the analogue device used in PLC
motors
switches
push buttons
identify the input device in PLC
LED
Motor
Lamp
sensor
Identify the output device in PLC
pumps
switch
push button
sensor
What is PLC stands for?
Program Logic Control
Please Learn Carefully
Programmable Logic Controller
Programmable Ladder Controller
What is the brand of PLC we used?
Omron
Siemens
Festo
Keyence
What type of PLC is this picture ??
Rack-mounted
Modular or compact
Unitary
What does a CPU Stand for?
Central programming unit
Central processing unit
Central programming usage
Central public unit
Which of the following is a part of a PLC CPU?
A. Address buses
B. Arithmetic Logic Unit
C. Input unit D. Output unit
E. Relays
4. Which of the following is a disadvantage of unitary PLC?
A. Limited number of inputs and outputs
B. Less scanning time
C. Scanning time increases with the increase in input and output modules
D. Inexpensive
E. Less troubleshooting time
What is this symbol called?
Normally Close contact
Normally Open contact
Output coil
Timer
What is this symbol called?
Normally Close contact
Normally Open contact
Ouptut Coil
Timer
What is this symbol called?
Normally Close contact
Normally Open contact
Output Coil
Timer
Choose the symbol that is similar to this diagram.
Choose the symbol that is similar to this diagram.
What is the meaning of "download" ?
To transfer the program to PC
To retrieve the program from PLC
To transfer the program to PLC
To retrieve the program from PC
What is the type of PLC program we are using?
Ladder
Mnemonics
Basic
Structured Text
What goes in the Q section
Input
Output
Reset
a type of data with two values: true and false or yes and no
Boolean
vaiable
maker
Which is not an output
Potentiometer
Pilot Light
Motor
Alarm light
Program or instructions permanently stored in ROM than control hardware at base level
Gateway
Subnet mask
Firmware
Driver
In a PLC “I” is used for output and “Q” is used for input
True
False
The part that monitors the inputs and makes decisions in a PLC is the CPU.
True
False
None of the above
One of the following is an input device
Motor
Light
Valve
Sensor
6. Which one of the following is not a PLC manufacturer.
Siemens
Mitsubishi
Microsoft
ABB
It’s usually the most expensive PLC type
Modular
Unitary
Rack-Mounted
7. Solenoids, lamps, motors are connected to
Analog output
Digital output
Analog input
Digital input
Which of the following is NOT considered as a PLC application?
A. Sorting application
B. Controlling a factory assembly line
C. Automatic door control system
D. Traffic Lights
E. Switching ON and OFF AC motors
convert the binary number 101010 to a denary number?
42
45
40
22
Programmable Logic Controller (or PLC) is a specialized _____________ that can control machines and processes.
A. analog computer
B. digital computer
C. input interface
D. output interface
E. actuator
____________ involves a mechanical device that can imitate the actions of people or animals.
Automation
Robotics
Robot
Automobile
