Electronics Worksheet: What Is IoT

Electronics lesson 27: What is IoT? · Set 172 · 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.Which of these is an IoT device? (a) an app-controlled bulb (b) a pencil sharpener (c) a plain wall switch (d) a battery torch
2. 2.🌐 In an IoT system, which part measures the real world? (a) sensor (b) microcontroller (c) phone app (d) Wi-Fi
3. 3.Which of these is an IoT device? (a) a battery torch (b) a pencil sharpener (c) a wind-up clock (d) a smart energy meter
4. 4.Which of these is not an IoT device? (a) a Wi-Fi doorbell camera (b) a plain table fan (c) a Wi-Fi weather station (d) a fitness band with app
5. 5.Which of these is not an IoT device? (a) a smart energy meter (b) a paper calendar (c) a Wi-Fi doorbell camera (d) an app-controlled bulb
6. 6.🌐 In an IoT system, which part stores data online? (a) actuator (b) microcontroller (c) phone app (d) cloud server
7. 7.🌐 A soil sensor sends a reading to an app every 5 minutes. How many readings arrive in 3 hours?
8. 8.🌐 A weather station sends one reading every 20 seconds. How many readings does it send in 7 minutes?
9. 9.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) an app-controlled bulb
10. 10.🌐 A soil sensor sends a reading to an app every 20 minutes. How many readings arrive in 4 hours?
11. 11.🌐 Is a pencil sharpener an IoT device? (a) an IoT device (b) not an IoT device
12. 12.🌐 In an IoT system, which part carries the data? (a) actuator (b) Wi-Fi (c) sensor (d) cloud server
13. 13.What does the Wi-Fi link do? (a) acts on a command (b) carries the data (c) stores data online (d) reads values, decides
14. 14.What does the actuator do? (a) carries the data (b) acts on a command (c) stores data online (d) measures the real world
15. 15.🌐 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
16. 16.🔢 To get a sensor reading onto a phone, which comes first: “the app shows it” or “it is sent by Wi-Fi”? (a) the app shows it (b) it is sent by Wi-Fi
17. 17.🔢 To get a sensor reading onto a phone, which comes first: “it is sent by Wi-Fi” or “the sensor measures”? (a) the sensor measures (b) it is sent by Wi-Fi
18. 18.What does the phone app do? (a) acts on a command (b) stores data online (c) shows data to you (d) carries the data
19. 19.🔍 Which is the odd one out? (a) a battery torch (b) a plain wall switch (c) a wind-up clock (d) a fitness band with app
20. 20.🌐 A weather station sends one reading every 10 seconds. How many readings does it send in 6 minutes?
21. 21.🔍 Which is the odd one out? (a) a Wi-Fi smart plug (b) a Wi-Fi weather station (c) a wind-up clock (d) an app-controlled bulb
22. 22.🔢 To get a sensor reading onto a phone, what comes right after “the sensor measures”? (a) the board reads it (b) the app shows it (c) it is sent by Wi-Fi (d) the cloud stores it
23. 23.What does the microcontroller do? (a) reads values, decides (b) measures the real world (c) stores data online (d) shows data to you
24. 24.🏠 Which is a smart-home example? (a) a hand fan (b) lights on from an app (c) a candle in a jar (d) a printed map
25. 25.🔢 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
26. 26.🌐 Each reading a sensor sends is 50 bytes. How many bytes do 170 readings take?
27. 27.🌐 In an IoT system, which part acts on a command? (a) cloud server (b) microcontroller (c) actuator (d) phone app
28. 28.🔍 Which is the odd one out? (a) a smart energy meter (b) a battery torch (c) a Wi-Fi weather station (d) an app-controlled bulb
29. 29.🔢 To get a sensor reading onto a phone, which comes first: “the app shows it” or “the sensor measures”? (a) the app shows it (b) the sensor measures
30. 30.🌐 In an IoT system, which part reads values, decides? (a) actuator (b) phone app (c) sensor (d) microcontroller
31. 31.🔍 Which is the odd one out? (a) a plain table fan (b) a Wi-Fi doorbell camera (c) a fitness band with app (d) an app-controlled bulb
32. 32.What does the sensor do? (a) shows data to you (b) stores data online (c) measures the real world (d) carries the data
33. 33.🌐 Is a Wi-Fi smart plug an IoT device? (a) an IoT device (b) not an IoT device
34. 34.🌐 A weather station sends one reading every 30 seconds. How many readings does it send in 4 minutes?
35. 35.🌐 Each reading a sensor sends is 20 bytes. How many bytes do 110 readings take?
36. 36.🌐 Is a plain wall switch an IoT device? (a) not an IoT device (b) an IoT device
37. 37.🌐 A soil sensor sends a reading to an app every 10 minutes. How many readings arrive in 1 hour?
38. 38.🌐 Is a paper calendar an IoT device? (a) not an IoT device (b) an IoT device
39. 39.🔢 To get a sensor reading onto a phone, what comes right after “the cloud stores it”? (a) the sensor measures (b) the app shows it (c) the board reads it (d) it is sent by Wi-Fi
40. 40.🔍 Which is the odd one out? (a) a fitness band with app (b) an app-controlled bulb (c) a paper calendar (d) a Wi-Fi smart plug

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