PLC 2

The abbreviations NO and NC represents the electrical state of switch contacts when_______________.

• Power is applied

• Power is not applied

• The switch is actuated

• The switch is not actuated

________ symbol of Normally close switch.

• 
• 

_________ programming Language is used for Traffic Lights

• Java

• C Language

• Ladder Diagram

• All of the above

What the program function?

• Y2 is ON when X020 is pressed

• Y2 is OFF when X020 is pressed

• Y2 is ON when X024 and X022 are pressed

• Y2 is ON when X021 and X022 are pressed

_________ is the input device of PLC

• Keyboard

• Sensors

• Hard disc

• Monitor

_________ is the output device of PLC.

• Solenoid Valve

• Lamp

• Hard disc

• Monitor

________ symbol of Normally open switch.

• 
• 

________ Ladder diagram for NAND Gate.

• 
• 

Digital  I/O modules operate on___________

• 24V AC supply

• 24V DC supply

• 5V  AC supply

• 12V DC supply

The scan consists of a series of sequential operations which include, Reading________, program execution, data output  

• connection

• Input

• Output

• Tie point