Electronics Worksheet: What Is IoT

Electronics lesson 27: What is IoT? · Set 428 · 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 weather station sends one reading every 15 seconds. How many readings does it send in 8 minutes?
2. 2.🌐 Is a battery torch an IoT device? (a) an IoT device (b) not an IoT device
3. 3.🌐 A soil sensor sends a reading to an app every 30 minutes. How many readings arrive in 5 hours?
4. 4.🌐 In an IoT system, which part stores data online? (a) cloud server (b) actuator (c) Wi-Fi (d) sensor
5. 5.🌐 A soil sensor sends a reading to an app every 15 minutes. How many readings arrive in 5 hours?
6. 6.🌐 A weather station sends one reading every 60 seconds. How many readings does it send in 3 minutes?
7. 7.🔢 To get a sensor reading onto a phone, what comes right after “the sensor measures”? (a) the board reads it (b) it is sent by Wi-Fi (c) the cloud stores it (d) the app shows it
8. 8.Which of these is an IoT device? (a) a pencil sharpener (b) an app-controlled bulb (c) a plain table fan (d) a wind-up clock
9. 9.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
10. 10.🌐 Each reading a sensor sends is 50 bytes. How many bytes do 60 readings take?
11. 11.Which of these is an IoT device? (a) a wind-up clock (b) a plain table fan (c) a plain wall switch (d) a Wi-Fi doorbell camera
12. 12.🔢 To get a sensor reading onto a phone, what comes right after “it is sent by Wi-Fi”? (a) the board reads it (b) the sensor measures (c) the cloud stores it (d) the app shows it
13. 13.Which of these is not an IoT device? (a) a pencil sharpener (b) a Wi-Fi smart plug (c) a Wi-Fi weather station (d) a Wi-Fi doorbell camera
14. 14.Which of these is not an IoT device? (a) an app-controlled bulb (b) a Wi-Fi doorbell camera (c) a Wi-Fi smart plug (d) a paper calendar
15. 15.🌐 Is a fitness band with app an IoT device? (a) not an IoT device (b) an IoT device
16. 16.🔍 Which is the odd one out? (a) a plain table fan (b) a battery torch (c) an app-controlled bulb (d) a pencil sharpener
17. 17.🔍 Which is the odd one out? (a) a fitness band with app (b) a Wi-Fi smart plug (c) a paper calendar (d) an app-controlled bulb
18. 18.🔍 Which is the odd one out? (a) a plain table fan (b) a plain wall switch (c) a smart energy meter (d) a paper calendar
19. 19.🌐 Is a pencil sharpener an IoT device? (a) an IoT device (b) not an IoT device
20. 20.🌐 Is a plain wall switch an IoT device? (a) not an IoT device (b) an IoT device
21. 21.🔢 To get a sensor reading onto a phone, which comes first: “it is sent by Wi-Fi” or “the cloud stores it”? (a) the cloud stores it (b) it is sent by Wi-Fi
22. 22.What does the Wi-Fi link do? (a) acts on a command (b) shows data to you (c) reads values, decides (d) carries the data
23. 23.What does the cloud server do? (a) carries the data (b) measures the real world (c) reads values, decides (d) stores data online
24. 24.🔍 Which is the odd one out? (a) a plain wall switch (b) an app-controlled bulb (c) a Wi-Fi weather station (d) a Wi-Fi smart plug
25. 25.🌐 Is a plain table fan an IoT device? (a) an IoT device (b) not an IoT device
26. 26.🌐 How does a home IoT device usually send its data to the app? (a) over Wi-Fi (b) by shouting (c) through a candle (d) by post
27. 27.Which of these is an IoT device? (a) a wind-up clock (b) a plain table fan (c) a Wi-Fi weather station (d) a battery torch
28. 28.🌐 A weather station sends one reading every 15 seconds. How many readings does it send in 7 minutes?
29. 29.What does the phone app do? (a) measures the real world (b) acts on a command (c) stores data online (d) shows data to you
30. 30.🌐 A soil sensor sends a reading to an app every 15 minutes. How many readings arrive in 2 hours?
31. 31.🌐 Each reading a sensor sends is 50 bytes. How many bytes do 150 readings take?
32. 32.🌐 In an IoT system, which part measures the real world? (a) phone app (b) Wi-Fi (c) microcontroller (d) sensor
33. 33.🌐 Is a wind-up clock an IoT device? (a) an IoT device (b) not an IoT device
34. 34.🌐 Each reading a sensor sends is 20 bytes. How many bytes do 90 readings take?
35. 35.Which of these is not an IoT device? (a) a Wi-Fi weather station (b) a wind-up clock (c) a Wi-Fi doorbell camera (d) a Wi-Fi smart plug
36. 36.🌐 A soil sensor sends a reading to an app every 10 minutes. How many readings arrive in 4 hours?
37. 37.🌐 A soil sensor sends a reading to an app every 15 minutes. How many readings arrive in 4 hours?
38. 38.🌐 Each reading a sensor sends is 25 bytes. How many bytes do 120 readings take?
39. 39.🌐 Is an app-controlled bulb an IoT device? (a) an IoT device (b) not an IoT device
40. 40.🌐 Each reading a sensor sends is 10 bytes. How many bytes do 20 readings take?

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