APLC UNIT 3

The vertical lines of PLC ladder diagram is called

• Rung

• Rail

• branch

• nest

The horizontal lines of PLC ladder diagram is called

• Rung

• Rail

• branch

• nest

A normally-open type contact will __________ when its bit is 0 and ________ when its bit is 1:

• Open, Close

• close, open

• open, open

• close, close

Which of the following is correct about contacts or coils seen in a Ladder Diagram PLC:

• All contacts and coils are real

• Contacts are real, while coils are programmed bits

• Coils are real, while contacts are programmed bits

• Both coils and contacts are bits in PLC memory

When relay coil is energized it is said to be:

• picked up

• drop out

• Roll in

• none of the above

The PLC’s can be programmed in _______

• structured text

• All of the above

• Instruction list

• ladder logic

• Functional block diagram

The instruction list plc programming language uses ________ code.

• c language code

• python

• Mnemonic code

• none of the above

The structure text PLC programming language is denoted by _____

• STS

• YNT

• XT

• BOTH ST AND STX

Which are the programming method?

• Ladder diagram

• Functional block diagram

• Sequential function chart

• All of the above

which one is the PLC programming language?

• HMI

• MIF

• BD

• none of the above

• FBD