Electronics Worksheet: What Is IoT

Electronics lesson 27: What is IoT? · Set 363 · 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 5 hours?
2. 2.🌐 Is a battery torch an IoT device? (a) an IoT device (b) not an IoT device
3. 3.🌐 In an IoT system, which part reads values, decides? (a) actuator (b) microcontroller (c) cloud server (d) phone app
4. 4.Which of these is an IoT device? (a) a plain table fan (b) a paper calendar (c) a fitness band with app (d) a wind-up clock
5. 5.🔍 Which is the odd one out? (a) a battery torch (b) a Wi-Fi doorbell camera (c) a plain wall switch (d) a pencil sharpener
6. 6.🔢 To get a sensor reading onto a phone, which comes first: “the sensor measures” or “the board reads it”? (a) the sensor measures (b) the board reads it
7. 7.What does the cloud server do? (a) measures the real world (b) shows data to you (c) acts on a command (d) stores data online
8. 8.What does the sensor do? (a) stores data online (b) shows data to you (c) measures the real world (d) reads values, decides
9. 9.🌐 A soil sensor sends a reading to an app every 5 minutes. How many readings arrive in 4 hours?
10. 10.🔍 Which is the odd one out? (a) a smart energy meter (b) a battery torch (c) a paper calendar (d) a plain wall switch
11. 11.🌐 Is an app-controlled bulb an IoT device? (a) not an IoT device (b) an IoT device
12. 12.🔍 Which is the odd one out? (a) a wind-up clock (b) a pencil sharpener (c) a plain wall switch (d) a fitness band with app
13. 13.Which of these is not an IoT device? (a) an app-controlled bulb (b) a pencil sharpener (c) a Wi-Fi smart plug (d) a smart energy meter
14. 14.🔍 Which is the odd one out? (a) a fitness band with app (b) an app-controlled bulb (c) a Wi-Fi doorbell camera (d) a battery torch
15. 15.🌐 Each reading a sensor sends is 25 bytes. How many bytes do 200 readings take?
16. 16.🌐 Each reading a sensor sends is 50 bytes. How many bytes do 120 readings take?
17. 17.🌐 A weather station sends one reading every 15 seconds. How many readings does it send in 7 minutes?
18. 18.🌐 In an IoT system, which part carries the data? (a) microcontroller (b) actuator (c) Wi-Fi (d) phone app
19. 19.🌐 A weather station sends one reading every 20 seconds. How many readings does it send in 10 minutes?
20. 20.Which of these is an IoT device? (a) a battery torch (b) a paper calendar (c) a pencil sharpener (d) a Wi-Fi doorbell camera
21. 21.🌐 A weather station sends one reading every 5 seconds. How many readings does it send in 9 minutes?
22. 22.🌐 Is a smart energy meter an IoT device? (a) not an IoT device (b) an IoT device
23. 23.Which of these is an IoT device? (a) a plain table fan (b) a battery torch (c) a plain wall switch (d) a Wi-Fi smart plug
24. 24.🌐 In an IoT system, which part shows data to you? (a) sensor (b) Wi-Fi (c) actuator (d) phone app
25. 25.What does the Wi-Fi link do? (a) carries the data (b) reads values, decides (c) measures the real world (d) acts on a command
26. 26.🌐 A soil sensor sends a reading to an app every 30 minutes. How many readings arrive in 3 hours?
27. 27.Which of these is an IoT device? (a) a wind-up clock (b) a battery torch (c) an app-controlled bulb (d) a pencil sharpener
28. 28.Which of these is not an IoT device? (a) a plain table fan (b) a Wi-Fi doorbell camera (c) a smart energy meter (d) an app-controlled bulb
29. 29.🌐 Is a pencil sharpener an IoT device? (a) an IoT device (b) not an IoT device
30. 30.What does the microcontroller do? (a) stores data online (b) measures the real world (c) carries the data (d) reads values, decides
31. 31.🌐 Is a wind-up clock an IoT device? (a) not an IoT device (b) an IoT device
32. 32.🌐 Is a plain table fan an IoT device? (a) not an IoT device (b) an IoT device
33. 33.🌐 In an IoT system, which part stores data online? (a) Wi-Fi (b) cloud server (c) phone app (d) sensor
34. 34.🌐 How does a home IoT device usually send its data to the app? (a) by shouting (b) by post (c) through a candle (d) over Wi-Fi
35. 35.🌐 Is a Wi-Fi doorbell camera an IoT device? (a) not an IoT device (b) an IoT device
36. 36.🔢 To get a sensor reading onto a phone, which comes first: “it is sent by Wi-Fi” or “the app shows it”? (a) it is sent by Wi-Fi (b) the app shows it
37. 37.🌐 In an IoT system, which part acts on a command? (a) cloud server (b) sensor (c) actuator (d) phone app
38. 38.🔢 To get a sensor reading onto a phone, what comes right after “the cloud stores it”? (a) the sensor measures (b) the board reads it (c) the app shows it (d) it is sent by Wi-Fi
39. 39.🔢 To get a sensor reading onto a phone, what comes right after “it is sent by Wi-Fi”? (a) the cloud stores it (b) the sensor measures (c) the app shows it (d) the board reads it
40. 40.Which of these is an IoT device? (a) a wind-up clock (b) a pencil sharpener (c) a plain wall switch (d) a smart energy meter

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