Electronics Worksheet: What Is IoT

Electronics lesson 27: What is IoT? · Set 226 · 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.🌐 Is an app-controlled bulb an IoT device? (a) not an IoT device (b) an IoT device
2. 2.🌐 A soil sensor sends a reading to an app every 5 minutes. How many readings arrive in 4 hours?
3. 3.🌐 Is a Wi-Fi smart plug an IoT device? (a) not an IoT device (b) an IoT device
4. 4.🌐 Is a battery torch an IoT device? (a) not an IoT device (b) an IoT device
5. 5.🔍 Which is the odd one out? (a) a Wi-Fi doorbell camera (b) a paper calendar (c) a battery torch (d) a pencil sharpener
6. 6.🌐 Is a plain table fan an IoT device? (a) an IoT device (b) not an IoT device
7. 7.🌐 A weather station sends one reading every 5 seconds. How many readings does it send in 5 minutes?
8. 8.🔍 Which is the odd one out? (a) a Wi-Fi doorbell camera (b) a pencil sharpener (c) an app-controlled bulb (d) a smart energy meter
9. 9.🌐 What does IoT stand for? (a) Input of Tools (b) Inside of Toys (c) Internet of Things (d) Internet of Talk
10. 10.🌐 A soil sensor sends a reading to an app every 15 minutes. How many readings arrive in 2 hours?
11. 11.🌐 In an IoT system, which part reads values, decides? (a) cloud server (b) microcontroller (c) phone app (d) actuator
12. 12.🌐 Is a fitness band with app an IoT device? (a) not an IoT device (b) an IoT device
13. 13.🔍 Which is the odd one out? (a) an app-controlled bulb (b) a Wi-Fi doorbell camera (c) a wind-up clock (d) a fitness band with app
14. 14.🔍 Which is the odd one out? (a) a plain table fan (b) a paper calendar (c) a smart energy meter (d) a plain wall switch
15. 15.🌐 A weather station sends one reading every 20 seconds. How many readings does it send in 2 minutes?
16. 16.🌐 How does a home IoT device usually send its data to the app? (a) over Wi-Fi (b) by post (c) through a candle (d) by shouting
17. 17.What does the cloud server do? (a) carries the data (b) stores data online (c) acts on a command (d) measures the real world
18. 18.What does the Wi-Fi link do? (a) carries the data (b) shows data to you (c) measures the real world (d) acts on a command
19. 19.🔢 To get a sensor reading onto a phone, what comes right after “the cloud stores it”? (a) the board reads it (b) the sensor measures (c) it is sent by Wi-Fi (d) the app shows it
20. 20.🌐 Each reading a sensor sends is 10 bytes. How many bytes do 60 readings take?
21. 21.🌐 In an IoT system, which part carries the data? (a) sensor (b) phone app (c) cloud server (d) Wi-Fi
22. 22.🌐 Each reading a sensor sends is 50 bytes. How many bytes do 100 readings take?
23. 23.What does the phone app do? (a) shows data to you (b) stores data online (c) reads values, decides (d) acts on a command
24. 24.🌐 Each reading a sensor sends is 25 bytes. How many bytes do 20 readings take?
25. 25.🔢 To get a sensor reading onto a phone, which is the LAST step? (a) the sensor measures (b) the board reads it (c) it is sent by Wi-Fi (d) the app shows it
26. 26.🌐 A weather station sends one reading every 5 seconds. How many readings does it send in 9 minutes?
27. 27.🏠 Which is a smart-home example? (a) lights on from an app (b) a printed map (c) a hand fan (d) a candle in a jar
28. 28.🔢 To get a sensor reading onto a phone, what comes right after “it is sent by Wi-Fi”? (a) the app shows it (b) the sensor measures (c) the cloud stores it (d) the board reads it
29. 29.Which of these is not an IoT device? (a) a Wi-Fi smart plug (b) a smart energy meter (c) a Wi-Fi doorbell camera (d) a plain table fan
30. 30.🔍 Which is the odd one out? (a) an app-controlled bulb (b) a battery torch (c) a fitness band with app (d) a smart energy meter
31. 31.🌐 A soil sensor sends a reading to an app every 30 minutes. How many readings arrive in 3 hours?
32. 32.Which of these is an IoT device? (a) a battery torch (b) a plain wall switch (c) a pencil sharpener (d) a Wi-Fi smart plug
33. 33.🌐 A soil sensor sends a reading to an app every 15 minutes. How many readings arrive in 4 hours?
34. 34.🌐 A soil sensor sends a reading to an app every 30 minutes. How many readings arrive in 5 hours?
35. 35.🔢 To get a sensor reading onto a phone, which comes first: “it is sent by Wi-Fi” or “the cloud stores it”? (a) it is sent by Wi-Fi (b) the cloud stores it
36. 36.Which of these is an IoT device? (a) a Wi-Fi weather station (b) a plain wall switch (c) a battery torch (d) a pencil sharpener
37. 37.🌐 Each reading a sensor sends is 50 bytes. How many bytes do 140 readings take?
38. 38.🌐 Each reading a sensor sends is 20 bytes. How many bytes do 150 readings take?
39. 39.🌐 A weather station sends one reading every 30 seconds. How many readings does it send in 7 minutes?
40. 40.🔍 Which is the odd one out? (a) a plain wall switch (b) a plain table fan (c) a wind-up clock (d) an app-controlled bulb

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