Final Answer:
Valves that open and close rapidly under the control of electronic circuits are Solenoid valves
Step-by-step explanation:
Valves that open and close rapidly under the control of electronic circuits are known as solenoid valves. These valves use an electromechanical solenoid to actuate the valve mechanism. When an electrical current is applied to the solenoid, it creates a magnetic field that moves a plunger or piston, opening or closing the valve.
Solenoid valves are widely used in various applications where rapid and precise control of fluid flow is required. The electronic circuits provide a means for automated and programmable control, allowing for efficient and quick response in processes such as industrial automation, fluid control systems, and more.
In summary, solenoid valves are characterized by their ability to open and close rapidly under electronic control, making them versatile components in modern automated systems.