Electronics Worksheet: What Is IoT

Electronics lesson 27: What is IoT? · Set 640 · 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.🔢 To get a sensor reading onto a phone, which comes first: “the app shows it” or “the board reads it”? (a) the app shows it (b) the board reads it
2. 2.🌐 Is a smart energy meter an IoT device? (a) not an IoT device (b) an IoT device
3. 3.🔍 Which is the odd one out? (a) a plain wall switch (b) a Wi-Fi weather station (c) a smart energy meter (d) a Wi-Fi smart plug
4. 4.🌐 Each reading a sensor sends is 10 bytes. How many bytes do 110 readings take?
5. 5.Which of these is an IoT device? (a) a smart energy meter (b) a battery torch (c) a wind-up clock (d) a plain wall switch
6. 6.🌐 Each reading a sensor sends is 50 bytes. How many bytes do 20 readings take?
7. 7.What does the actuator do? (a) reads values, decides (b) acts on a command (c) shows data to you (d) measures the real world
8. 8.🌐 Each reading a sensor sends is 25 bytes. How many bytes do 90 readings take?
9. 9.🔍 Which is the odd one out? (a) a smart energy meter (b) a Wi-Fi smart plug (c) a fitness band with app (d) a plain table fan
10. 10.Which of these is not an IoT device? (a) a Wi-Fi doorbell camera (b) a pencil sharpener (c) an app-controlled bulb (d) a Wi-Fi weather station
11. 11.🔢 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
12. 12.🌐 Is a paper calendar an IoT device? (a) an IoT device (b) not an IoT device
13. 13.🌐 A weather station sends one reading every 5 seconds. How many readings does it send in 8 minutes?
14. 14.🌐 In an IoT system, which part acts on a command? (a) actuator (b) phone app (c) sensor (d) cloud server
15. 15.🌐 Is a pencil sharpener an IoT device? (a) an IoT device (b) not an IoT device
16. 16.🌐 Each reading a sensor sends is 25 bytes. How many bytes do 110 readings take?
17. 17.🌐 Is a plain table fan an IoT device? (a) not an IoT device (b) an IoT device
18. 18.🔢 To get a sensor reading onto a phone, which comes first: “the sensor measures” or “the cloud stores it”? (a) the sensor measures (b) the cloud stores it
19. 19.🌐 A soil sensor sends a reading to an app every 5 minutes. How many readings arrive in 4 hours?
20. 20.🌐 Is a Wi-Fi doorbell camera an IoT device? (a) an IoT device (b) not an IoT device
21. 21.🔍 Which is the odd one out? (a) a plain table fan (b) a plain wall switch (c) a wind-up clock (d) a Wi-Fi smart plug
22. 22.Which of these is an IoT device? (a) a paper calendar (b) an app-controlled bulb (c) a plain table fan (d) a pencil sharpener
23. 23.🔍 Which is the odd one out? (a) a Wi-Fi smart plug (b) a wind-up clock (c) a Wi-Fi weather station (d) a fitness band with app
24. 24.🌐 A soil sensor sends a reading to an app every 20 minutes. How many readings arrive in 1 hour?
25. 25.🌐 Is a Wi-Fi smart plug an IoT device? (a) an IoT device (b) not an IoT device
26. 26.🔢 To get a sensor reading onto a phone, what comes right after “the sensor measures”? (a) the cloud stores it (b) the app shows it (c) the board reads it (d) it is sent by Wi-Fi
27. 27.What does the microcontroller do? (a) shows data to you (b) acts on a command (c) carries the data (d) reads values, decides
28. 28.🌐 Each reading a sensor sends is 50 bytes. How many bytes do 30 readings take?
29. 29.🔍 Which is the odd one out? (a) a Wi-Fi doorbell camera (b) a paper calendar (c) a fitness band with app (d) an app-controlled bulb
30. 30.Which of these is not an IoT device? (a) a battery torch (b) a smart energy meter (c) a fitness band with app (d) an app-controlled bulb
31. 31.🌐 Is a Wi-Fi weather station an IoT device? (a) not an IoT device (b) an IoT device
32. 32.🌐 Is a fitness band with app an IoT device? (a) an IoT device (b) not an IoT device
33. 33.🌐 A soil sensor sends a reading to an app every 15 minutes. How many readings arrive in 5 hours?
34. 34.🔢 To get a sensor reading onto a phone, which is the FIRST step? (a) it is sent by Wi-Fi (b) the cloud stores it (c) the app shows it (d) the sensor measures
35. 35.🌐 In an IoT system, which part reads values, decides? (a) cloud server (b) sensor (c) actuator (d) microcontroller
36. 36.🔍 Which is the odd one out? (a) a battery torch (b) a wind-up clock (c) a Wi-Fi doorbell camera (d) a plain table fan
37. 37.🔢 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
38. 38.🌐 A weather station sends one reading every 20 seconds. How many readings does it send in 10 minutes?
39. 39.🏠 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
40. 40.🔢 To get a sensor reading onto a phone, which is the LAST step? (a) it is sent by Wi-Fi (b) the sensor measures (c) the cloud stores it (d) the app shows it

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