4-12 & 4-13 PLC Classwork

PLC stands for ___________

• Programmable Logic Controller

• Programmable Logic Computer

• Programs Learn Computers

• Program Ladder Controls

Why was the PLC developed in manufacturing?

• To replace Computer systems.

• To replace Relay systems.

What is the programming language used for PLCs?

• Java

• Python

• Ladder Diagram

• Block Coding

Which one is NOT an Output Device?

• Motor

• Solenoid

• Indicator Lamp

• Selector Switch

Identify the symbol shown by the image.

• Normally Closed (NC)

• Normally Open (NO)

• Relay Coil

• Motor

Identify the symbol shown by the image.

• Normally Closed (NC) Pushbutton

• Normally Open (NO) Pushbutton

• Relay Coil

• Normally Closed (NC) Switch

If two NC contacts are connected in series that satisfies _______Gate logic.

• AND

• NAND

• OR

• NOR

What the symbol function?

• Normally Closed (NC)

• Normally Open (NO)

• Relay Coil

• Lamp

Inputs X021 and X022 are shown as __________ in the ladder diagram.

• parallel

• series

• coil

• one rung

What logic function is shown here?

• OR

• AND

• NAND

• NOR