Which of the following are common types of boiler control systems?

The correct answer identifies common types of boiler control systems as electronic and manual control systems.

Electronic control systems are widely used in modern boilers due to their precision and ability to automate processes. These systems rely on sensors and microcontrollers to monitor and adjust the boiler's operations, such as temperature, pressure, and fuel flow, ensuring optimal performance and safety.

On the other hand, manual control systems, while less common in contemporary setups, are still prevalent in some industrial applications where operators need hands-on control over the boiler. These systems require personnel to physically adjust controls and settings, which can be crucial in certain operational contexts or for older equipment that does not incorporate advanced technologies.

This distinction helps in understanding the evolution of boiler control technologies and the importance of integrating electronic systems for efficiency and reliability in boiler operations.