1. What is an air cooler? 2. How does an air cooler differ from an air conditioner? 3. What are the basic components of an air cooler? 4. Explain the working principle of an air cooler. 5. In which climatic conditions are air coolers most effective? 6. How is an air cooler maintained? 7. Can … Read more
1. What is a rain alarm? 2. How does a rain alarm work? 3. What are the common types of rain sensors used in rain alarms? 4. Why is a rain alarm useful? 5. Can rain alarms be used for agricultural purposes? 6. How can rain alarms contribute to water conservation? 7. Are rain alarms … Read more
1. What is the function of the human eye? 2. What are the main parts of the eye? 3. What is the cornea, and what is its role in vision? 4. What is the function of the iris? 5. What is the pupil, and how does it respond to light? 6. How does the lens … Read more
1. What is a dam? 2. What is the primary purpose of a dam? 3. How is a dam different from a reservoir? 4. What are the types of dams based on construction material? 5. How do gravity dams work? 6. What is the purpose of spillways in dams? 7. How does a dam contribute … Read more
Escalator Introduction: An escalator is a moving staircase designed to transport people between different levels of a building. It consists of a continuously circulating belt or chain of steps that move in a loop, allowing individuals to step onto it at the bottom and be carried to the top. Escalators are commonly used in places … Read more