SACA 207 PLC 1.3 Quiz
Programmable Logic Controllers (also called PLCs) are industrial __________ that
control machines and other industrial applications.
A. Computers
B. Software
C. Switches
D. Relays - correct answer A. Computers
A 24vdc Input module uses sinking type (also called Active High) inputs. What is the
applied voltage to the input that would cause the input to turn on?
A. 9dvc
B. 0vdc
C. +24vdc
D. -24vdc - correct answer C. +24vdc
What is the output of a comparison instruction?
A. A true or false output
B. A value equal to the difference of the inputs
C. A numerical value based on the type of instruction
D. None of the above - correct answer A. A true or false
output
PLC seal-in logic works by using a second XIC instruction that is connected in
__________ with the XIC instruction which turns on the output.
A. The next rung
