What is the working principle of a waterwheel?
2 Answers
The principle of a waterwheel is roughly that the paddles scoop water and the buckets hold water. As the river flows, the spokes slowly rotate by the inertia of the water's movement, lifting the buckets filled with river water step by step. At the top, the buckets naturally tilt, pouring the water into the flume, which then flows to the irrigated fields. Below is a detailed introduction about vehicle types: Overview: Vehicle types refer to a classification based on common characteristics, intended use, and functions. For example, sedans, trucks, buses, trailers, and incomplete vehicles are all separate types. Others: Heavy-duty vehicles have a length greater than or equal to 6m and a total mass greater than or equal to 12,000kg. Medium-duty vehicles have a length greater than or equal to 6m and a total mass greater than or equal to 4,500kg but less than 12,000kg. Light-duty vehicles have a length less than 6m and a total mass less than 4,500kg. Mini vehicles have a length less than or equal to 3.5m and a carrying capacity less than or equal to 1,800kg.
The working principle of a car water pump is actually not complicated; it is driven by the rotation of the engine. Think about it: when the car is moving, the engine connects to the water pump shaft via a belt. Inside the water pump, there is an impeller that, when rotating, creates pressure to draw in the coolant and then push it out. This coolant circulates through the engine to absorb heat, flows to the radiator to dissipate the heat and cool down, and then cycles back. If the water pump has issues, such as impeller wear or seal leakage, the car is prone to overheating and stalling. I recommend paying attention to the temperature gauge after driving. If the dashboard alerts you, quickly check whether the water pump is leaking or making unusual noises. Early maintenance can prevent bigger problems down the line.
