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PLC basics

Total questions: 15

Worksheet time: 8mins

Name
Class
Date
1.

PLC stands for?

a)

Program Logic Control

b)

Programmable Logic Controller

c)

Programming Logic Controller

d)

Programming Logic Control

2.

What is this symbol called?

a)

Normally Closed contact

b)

Normally Open contact

c)

Output coil

3.

Which amongst the following is not a PLC programming language?

a)

Structured text

b)

Ladder diagram

c)

Mnemonics Code

d)

Instruction list

e)

Functional Block Diagram

4.

what is description of NO and NC

a)

Not Open and Not Closed

b)

Need Open and Not Closed

c)

Never Open and Never Closed

d)

Normally Open and Normally Closed

5.

What is this symbol called?

a)

Output coil

b)

Normally Open contact

c)

Normally Closed contact

6.

What is this symbol called?

a)

Output coil

b)

Normally Open contact

c)

Normally Closed contact

7.

Which of the following is NOT part of basic PLC system?

a)

Memory

b)

Relay box

c)

Power supply

d)

Central Processing Unit (CPU)

8.

Choose the symbol that is similar to this diagram.

a)
b)
c)
d)
9.

_________ is the brain of the PLC

a)

Computer

b)

CPU

c)

Memory

d)

Input Device

10.

What task do PLC perform.

a)

Interlocking

b)

Sequencing

c)

Timing and Control

d)

All of the above

11.

_________ is the input device of PLC

a)

Keyboard

b)

Sensors

c)

Hard disc

d)

Monitor

12.

_________ is the output device of PLC.

a)

Solenoid Valve

b)

Lamp

c)

Hard disc

d)

Monitor

13.

The vertical lines in a ladder diagram is called as ______________

a)

Rungs

b)

Rail

14.

The horizontal lines in a ladder diagram is called as ______________

a)

Rungs

b)

Rail

15.

The Inputs of PLC is represented as _____________in ladder diagram.

a)

Switches

b)

Actuators