In control systems, list examples of transducers, actuators, and sensors, and describe their functions and advantages.

QUESTION 4 4.1 A transducer is an electrical device that converts one type of energy to another. List THREE examples of input transducers. Thermistor* Light Dependent Resistor (LDR)* Pressure sensor* 4.2 List FOUR advantages of electrical transducers. They offer high accuracy* and precision. They have a fast response time*. They allow for remote operation* and monitoring. They are compatible with electronic control systems* and data processing. 4.3 List THREE types of actuators. Hydraulic actuators* Pneumatic actuators* Electric actuators* 4.4 Define the term sensor as used in control systems. A sensor is a device that detects and measures a physical quantity (like temperature, pressure, or light) and converts it into an electrical signal that can be read and processed by a control system. 4.5 List THREE types of hydraulic valves that are classified according to their function. Directional control valves* Pressure control valves* Flow control valves* 4.6 Name FIVE input devices that can be connected to a programmable logic controller. Push buttons* Limit switches* Proximity sensors* Photoelectric sensors* Temperature sensors* 4.7 Name TWO requirements of an emergency-stop button. It must be easily accessible* and clearly visible. It must have a latching mechanism* to remain in the "stop" position once activated. 4.8 State THREE purposes of a manufacturer's manual. To provide operating instructions* for safe and correct use of the equipment. To detail maintenance procedures* and schedules to ensure longevity and performance. To offer troubleshooting guides* for common problems and their solutions. QUESTION 5 5.1 Complete the table by filling in the CORRECTIVE ACTION. | PROBLEM | POSSIBLE CAUSE | CORRECTIVE ACTION | | :--------------------------------------- | :----------------------------------- | :---------------------------------------------- | | Bearing heats up and seizes up | Rollers damaged | 5.1.1 Replace the damaged bearing | | Cracks or notches appear on bearing | Excessive shock loads | 5.1.2 Reduce shock loads on the bearing | | Bearing surface partially or fully rusted | Penetration by water | 5.1.3 Improve sealing to prevent water ingress | | Heavy wear | Foreign particles in the lubricant | 5.1.4 Filter or replace contaminated lubricant | What's next?