PLC
Which of the following is not a suitable application for a PLC? - Answer-To control a computer numerical
control (CNC) machine
PLC are _____ designed for use in the control of a wide variety of manufacturing machines and systems -
Answer-Special-purpose industrial computers
When comparing a relay-based control system to a PLC, which of the following is not an advantage of
the PLC? - Answer-Capable of switching higher output currents
The part of a PLC that executes the logic program is the _____ - Answer-Processor
The purpose of a digital output module is _____ - Answer-To energize loads in response to PLC
instructions
Which of the following is the proper sequence of operation within a PLC? - Answer-Examine inputs,
perform logic, update outputs
Which of the following is how input and output modules communicate with the CPU? - Answer-By a
series of electrical connections in the backplane
, Which of the following does not apply to the optical isolator circuit in the I/O modules? - Answer-
Converting analog signals to digital signals for processing
Which of the following is a common language used to program PLCs that uses a graphical representation
of relay circuits? - Answer-Ladder logic
Which of the following two broad categories are PLC memories divided into? - Answer-Program and
data files
Which of the following is the type of PLC memory file used to address hardwired inputs? - Answer-Input
image
Which of the following components does a PLC processor normally not contain? - Answer-Relay
Which of the following is referred to by the tag name "local"? - Answer-Module defined
Which of the following is the purpose of the input interface module? - Answer-it connects the CPU to
signals from the process
Which of the following is a consideration for selecting an output module for a PLC? - Answer-The type
of low voltage load driven
Fuse indicator may be located on the _____ - Answer-Output modules
Which of the following modules must be used with a current sourcing sensor? - Answer-A current
sinking input module
Which of the following is not a suitable application for a PLC? - Answer-To control a computer numerical
control (CNC) machine
PLC are _____ designed for use in the control of a wide variety of manufacturing machines and systems -
Answer-Special-purpose industrial computers
When comparing a relay-based control system to a PLC, which of the following is not an advantage of
the PLC? - Answer-Capable of switching higher output currents
The part of a PLC that executes the logic program is the _____ - Answer-Processor
The purpose of a digital output module is _____ - Answer-To energize loads in response to PLC
instructions
Which of the following is the proper sequence of operation within a PLC? - Answer-Examine inputs,
perform logic, update outputs
Which of the following is how input and output modules communicate with the CPU? - Answer-By a
series of electrical connections in the backplane
, Which of the following does not apply to the optical isolator circuit in the I/O modules? - Answer-
Converting analog signals to digital signals for processing
Which of the following is a common language used to program PLCs that uses a graphical representation
of relay circuits? - Answer-Ladder logic
Which of the following two broad categories are PLC memories divided into? - Answer-Program and
data files
Which of the following is the type of PLC memory file used to address hardwired inputs? - Answer-Input
image
Which of the following components does a PLC processor normally not contain? - Answer-Relay
Which of the following is referred to by the tag name "local"? - Answer-Module defined
Which of the following is the purpose of the input interface module? - Answer-it connects the CPU to
signals from the process
Which of the following is a consideration for selecting an output module for a PLC? - Answer-The type
of low voltage load driven
Fuse indicator may be located on the _____ - Answer-Output modules
Which of the following modules must be used with a current sourcing sensor? - Answer-A current
sinking input module
