QUIZ (UNIT 5: MACHINE CONTROL)

What are the three sections of a control system?

• Input, Processing, Output

• Sensor, Actuator, Processor

• Logic Control, Sequential Control, Cyclic Control

• Hard-wired Control, Programmable Control, Time-dependent Control

What is the purpose of a control system?

• To direct the individual operations of a machine or plant according to a specified function sequence

• To convert physical quantities into electrical signals

• To produce the necessary output signal in accordance with the control plan

• To convert signals from the control system into other necessary quantities

Identify types of switch based on Figure given

• Rotary switch

• Limit switch

• Push button switch

• Pressure switch

Disadvantages of using Programmable Logic Controllers (PLCs) in industrial automation and control systems.

• PLCs can communicate with other industrial automation devices, such as sensors, actuators, and human-machine interfaces (HMIs), enabling seamless integration into larger control systems.

• PLCs offer centralized control of complex systems, allowing for coordinated operation of multiple devices and subsystems within a manufacturing process

• PLCs can be easily reprogrammed to accommodate changes in the manufacturing process or to implement new features without requiring physical changes to the system.

• PLCs require regular maintenance, including software updates, backups, and periodic hardware checks. Failure to perform maintenance tasks can lead to system downtime and potential loss of productivity.

Identify types of switch based on figure given

• Limit switch

• Pressure switch

• Rotary switch

• Push button switch