Electronics Worksheet: What Is IoT

Electronics lesson 27: What is IoT? · Set 285 · 40 questions

Remember (Sense, send, store, show): IoT device = an everyday thing that shares data over the internet (usually Wi-Fi and an app). Data flow: sensor → board → Wi-Fi → cloud → app (and commands back to an actuator). Readings sent = total time ÷ time between readings, in the same units.

1. 1.🌐 A soil sensor sends a reading to an app every 5 minutes. How many readings arrive in 6 hours?
2. 2.Which of these is an IoT device? (a) a wind-up clock (b) a battery torch (c) a plain wall switch (d) an app-controlled bulb
3. 3.🌐 Is a fitness band with app an IoT device? (a) not an IoT device (b) an IoT device
4. 4.🔍 Which is the odd one out? (a) a Wi-Fi doorbell camera (b) a smart energy meter (c) a plain table fan (d) a Wi-Fi smart plug
5. 5.🌐 A soil sensor sends a reading to an app every 30 minutes. How many readings arrive in 5 hours?
6. 6.🔍 Which is the odd one out? (a) a wind-up clock (b) a fitness band with app (c) an app-controlled bulb (d) a Wi-Fi weather station
7. 7.🌐 How does a home IoT device usually send its data to the app? (a) by shouting (b) over Wi-Fi (c) by post (d) through a candle
8. 8.🌐 Is an app-controlled bulb an IoT device? (a) an IoT device (b) not an IoT device
9. 9.🏠 Which is a smart-home example? (a) lights on from an app (b) a candle in a jar (c) a hand fan (d) a printed map
10. 10.What does the cloud server do? (a) carries the data (b) stores data online (c) shows data to you (d) acts on a command
11. 11.🌐 Each reading a sensor sends is 20 bytes. How many bytes do 50 readings take?
12. 12.What does the actuator do? (a) reads values, decides (b) acts on a command (c) carries the data (d) measures the real world
13. 13.🔍 Which is the odd one out? (a) an app-controlled bulb (b) a pencil sharpener (c) a Wi-Fi smart plug (d) a Wi-Fi doorbell camera
14. 14.What does the sensor do? (a) measures the real world (b) stores data online (c) carries the data (d) reads values, decides
15. 15.🔍 Which is the odd one out? (a) a Wi-Fi smart plug (b) a battery torch (c) a smart energy meter (d) a Wi-Fi weather station
16. 16.Which of these is not an IoT device? (a) a wind-up clock (b) a fitness band with app (c) a Wi-Fi smart plug (d) a smart energy meter
17. 17.Which of these is an IoT device? (a) a battery torch (b) a wind-up clock (c) a pencil sharpener (d) a smart energy meter
18. 18.🌐 Is a plain table fan an IoT device? (a) an IoT device (b) not an IoT device
19. 19.🌐 In an IoT system, which part shows data to you? (a) sensor (b) cloud server (c) phone app (d) Wi-Fi
20. 20.🌐 Is a plain wall switch an IoT device? (a) not an IoT device (b) an IoT device
21. 21.🌐 A soil sensor sends a reading to an app every 10 minutes. How many readings arrive in 6 hours?
22. 22.🔢 To get a sensor reading onto a phone, what comes right after “the cloud stores it”? (a) the app shows it (b) the board reads it (c) it is sent by Wi-Fi (d) the sensor measures
23. 23.🔢 To get a sensor reading onto a phone, which comes first: “the sensor measures” or “the cloud stores it”? (a) the cloud stores it (b) the sensor measures
24. 24.🔍 Which is the odd one out? (a) a Wi-Fi smart plug (b) a paper calendar (c) a smart energy meter (d) a Wi-Fi doorbell camera
25. 25.🌐 A weather station sends one reading every 15 seconds. How many readings does it send in 3 minutes?
26. 26.Which of these is an IoT device? (a) a plain table fan (b) a Wi-Fi weather station (c) a wind-up clock (d) a paper calendar
27. 27.Which of these is not an IoT device? (a) a smart energy meter (b) an app-controlled bulb (c) a paper calendar (d) a fitness band with app
28. 28.🌐 Is a Wi-Fi smart plug an IoT device? (a) an IoT device (b) not an IoT device
29. 29.What does the microcontroller do? (a) measures the real world (b) stores data online (c) shows data to you (d) reads values, decides
30. 30.🔢 To get a sensor reading onto a phone, what comes right after “the sensor measures”? (a) the app shows it (b) the cloud stores it (c) the board reads it (d) it is sent by Wi-Fi
31. 31.🔢 To get a sensor reading onto a phone, which comes first: “it is sent by Wi-Fi” or “the board reads it”? (a) it is sent by Wi-Fi (b) the board reads it
32. 32.Which of these is not an IoT device? (a) a Wi-Fi weather station (b) an app-controlled bulb (c) a battery torch (d) a Wi-Fi smart plug
33. 33.🌐 Is a pencil sharpener an IoT device? (a) an IoT device (b) not an IoT device
34. 34.🔍 Which is the odd one out? (a) a Wi-Fi smart plug (b) a plain table fan (c) a wind-up clock (d) a battery torch
35. 35.🔍 Which is the odd one out? (a) a battery torch (b) a plain table fan (c) an app-controlled bulb (d) a paper calendar
36. 36.🌐 In an IoT system, which part acts on a command? (a) microcontroller (b) sensor (c) phone app (d) actuator
37. 37.🌐 In an IoT system, which part carries the data? (a) sensor (b) Wi-Fi (c) cloud server (d) microcontroller
38. 38.🌐 Each reading a sensor sends is 25 bytes. How many bytes do 40 readings take?
39. 39.🌐 Each reading a sensor sends is 50 bytes. How many bytes do 50 readings take?
40. 40.🌐 A soil sensor sends a reading to an app every 20 minutes. How many readings arrive in 1 hour?

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