You are designing a system to detect the presence of an object on a conveyor belt. Which sensor

would you use?

You want to build a smart home system that automatically turns on the lights when someone enters a

room. Which sensor would you use for detecting human presence?

You are developing a project that requires you to measure the distance between two objects. Which

sensor would you use?

You are creating a project to monitor soil moisture for a plant. Which sensor would you use?

You are designing an autonomous drone that needs to detect obstacles in its path. Which sensor

would be most suitable for this application?

You are developing a system to monitor air quality in a smart city environment. Which sensor would

you use to measure particulate matter (PM) levels?

You are creating a security system that needs to detect the presence of unauthorized individuals in a

restricted area. Which sensor would you use for this purpose?

You are building a robotic arm that needs to detect the weight of objects it picks up. Which sensor

would you use to measure the weight?

You are developing a project that requires you to detect the color of an object. Which sensor would

you use for color detection?

How does an ultrasonic sensor measure distance?

How does a photoresistor (LDR) work?

What principle does a thermocouple use to measure temperature?

How does a PIR (Passive Infrared) sensor detect motion?

What principle does a flex sensor use to measure bending?