1. What is the part of the PLC called where inputs and outputs are connected?

• o   A. Memory 

• o   B. Input /output interface

• C. Processor

• o   D. Power supply

2. Where does PLC stores its program?

• A. Input device

• B. Power supply

• C. Programming device

• D. Memory

3. Which of the following is a PLC input device?

• o   A. Fan

• o   B. Motor

• o   C. Sensor

• o   D. Light

4. Which of the following is NOT part of a basic PLC system?

• o   A. Relay box

• o   B. Power supply

• o   C. Memory

• o   D. CPU

5. Which of the following is an output device?

• o   A. Keypad

• B. Distance sensor

• o   C. Sound sensor

• o   D. Motor

6. A PLC is a computer used for industrial automation.

• o   A. True

• o   B. False

• o   C. None of the above

7. Which of the following is the application of PLC?

• o   A. Wending machines

• o   B. Automatic door

• o   C. Cereal filling systems

• o   D. All of the above

   

8. Which of the following is an example of discrete (digital) control?

• A. Turning a lamp ON or OFF

• B. Varying the brightness of a lamp

• C. Varying the volume of a music system

• o   D. Controlling the speed of a fan

9. What are solenoids, lamps, and motors connected to?

• A. Analog input

• o   B. Analog output

• C. Digital input

• o   D. Digital output

10. Gear Box is used to decrease the speed and increase the torque.

• A.    True

• A.    False

• A.    None of the abov