Electronics Worksheet: What Is IoT

Electronics lesson 27: What is IoT? · Set 447 · 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.What does the microcontroller do? (a) carries the data (b) reads values, decides (c) stores data online (d) shows data to you
2. 2.🌐 Each reading a sensor sends is 25 bytes. How many bytes do 90 readings take?
3. 3.🌐 In an IoT system, which part measures the real world? (a) phone app (b) actuator (c) Wi-Fi (d) sensor
4. 4.🌐 Each reading a sensor sends is 20 bytes. How many bytes do 30 readings take?
5. 5.Which of these is an IoT device? (a) a plain wall switch (b) a plain table fan (c) a smart energy meter (d) a battery torch
6. 6.🔢 To get a sensor reading onto a phone, which is the LAST step? (a) the sensor measures (b) the board reads it (c) the app shows it (d) the cloud stores it
7. 7.Which of these is an IoT device? (a) a plain table fan (b) an app-controlled bulb (c) a paper calendar (d) a battery torch
8. 8.🌐 In an IoT system, which part stores data online? (a) phone app (b) cloud server (c) sensor (d) actuator
9. 9.🌐 Is a plain table fan an IoT device? (a) an IoT device (b) not an IoT device
10. 10.🔍 Which is the odd one out? (a) a pencil sharpener (b) a plain table fan (c) a plain wall switch (d) a Wi-Fi smart plug
11. 11.🌐 In an IoT system, which part carries the data? (a) cloud server (b) microcontroller (c) phone app (d) Wi-Fi
12. 12.🏠 Which is a smart-home example? (a) lights on from an app (b) a hand fan (c) a printed map (d) a candle in a jar
13. 13.Which of these is an IoT device? (a) a pencil sharpener (b) a wind-up clock (c) a battery torch (d) a Wi-Fi doorbell camera
14. 14.🌐 A soil sensor sends a reading to an app every 10 minutes. How many readings arrive in 3 hours?
15. 15.🔢 To get a sensor reading onto a phone, which is the FIRST step? (a) the app shows it (b) the sensor measures (c) the cloud stores it (d) the board reads it
16. 16.🌐 How does a home IoT device usually send its data to the app? (a) through a candle (b) by shouting (c) over Wi-Fi (d) by post
17. 17.🌐 Is a smart energy meter an IoT device? (a) not an IoT device (b) an IoT device
18. 18.Which of these is not an IoT device? (a) a plain table fan (b) a smart energy meter (c) a fitness band with app (d) a Wi-Fi weather station
19. 19.Which of these is not an IoT device? (a) an app-controlled bulb (b) a wind-up clock (c) a smart energy meter (d) a Wi-Fi doorbell camera
20. 20.🌐 Is a battery torch an IoT device? (a) not an IoT device (b) an IoT device
21. 21.Which of these is not an IoT device? (a) a Wi-Fi doorbell camera (b) a battery torch (c) a Wi-Fi smart plug (d) a smart energy meter
22. 22.🌐 A soil sensor sends a reading to an app every 30 minutes. How many readings arrive in 1 hour?
23. 23.What does the phone app do? (a) stores data online (b) measures the real world (c) carries the data (d) shows data to you
24. 24.🌐 A weather station sends one reading every 60 seconds. How many readings does it send in 3 minutes?
25. 25.🔢 To get a sensor reading onto a phone, which comes first: “the board reads it” or “it is sent by Wi-Fi”? (a) the board reads it (b) it is sent by Wi-Fi
26. 26.What does the sensor do? (a) carries the data (b) stores data online (c) reads values, decides (d) measures the real world
27. 27.🔍 Which is the odd one out? (a) a battery torch (b) a pencil sharpener (c) a Wi-Fi weather station (d) a plain wall switch
28. 28.What does the Wi-Fi link do? (a) carries the data (b) reads values, decides (c) stores data online (d) acts on a command
29. 29.🌐 Is a Wi-Fi smart plug an IoT device? (a) not an IoT device (b) an IoT device
30. 30.🌐 A soil sensor sends a reading to an app every 30 minutes. How many readings arrive in 5 hours?
31. 31.🔢 To get a sensor reading onto a phone, what comes right after “the cloud stores it”? (a) it is sent by Wi-Fi (b) the sensor measures (c) the app shows it (d) the board reads it
32. 32.🔢 To get a sensor reading onto a phone, which comes first: “the app shows it” or “the cloud stores it”? (a) the app shows it (b) the cloud stores it
33. 33.What does the actuator do? (a) acts on a command (b) measures the real world (c) reads values, decides (d) stores data online
34. 34.🌐 A soil sensor sends a reading to an app every 5 minutes. How many readings arrive in 4 hours?
35. 35.Which of these is an IoT device? (a) a paper calendar (b) a wind-up clock (c) a plain table fan (d) a Wi-Fi smart plug
36. 36.🌐 A soil sensor sends a reading to an app every 15 minutes. How many readings arrive in 5 hours?
37. 37.🔢 To get a sensor reading onto a phone, which comes first: “the board reads it” or “the cloud stores it”? (a) the board reads it (b) the cloud stores it
38. 38.🌐 A soil sensor sends a reading to an app every 5 minutes. How many readings arrive in 2 hours?
39. 39.🔍 Which is the odd one out? (a) a plain wall switch (b) a Wi-Fi doorbell camera (c) a smart energy meter (d) a Wi-Fi smart plug
40. 40.🌐 Each reading a sensor sends is 20 bytes. How many bytes do 80 readings take?

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