Electronics Worksheet: What Is IoT

Electronics lesson 27: What is IoT? · Set 690 · 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 is the odd one out? (a) a wind-up clock (b) a plain wall switch (c) a Wi-Fi weather station (d) a battery torch
2. 2.🌐 A soil sensor sends a reading to an app every 20 minutes. How many readings arrive in 6 hours?
3. 3.🌐 A soil sensor sends a reading to an app every 20 minutes. How many readings arrive in 2 hours?
4. 4.🔍 Which is the odd one out? (a) an app-controlled bulb (b) a battery torch (c) a wind-up clock (d) a paper calendar
5. 5.🌐 A weather station sends one reading every 20 seconds. How many readings does it send in 8 minutes?
6. 6.🌐 Each reading a sensor sends is 20 bytes. How many bytes do 70 readings take?
7. 7.🌐 How does a home IoT device usually send its data to the app? (a) over Wi-Fi (b) through a candle (c) by post (d) by shouting
8. 8.Which of these is an IoT device? (a) an app-controlled bulb (b) a wind-up clock (c) a plain wall switch (d) a paper calendar
9. 9.🔢 To get a sensor reading onto a phone, what comes right after “the board reads it”? (a) the sensor measures (b) the cloud stores it (c) the app shows it (d) it is sent by Wi-Fi
10. 10.🏠 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
11. 11.Which of these is not an IoT device? (a) a Wi-Fi doorbell camera (b) an app-controlled bulb (c) a wind-up clock (d) a Wi-Fi weather station
12. 12.🌐 In an IoT system, which part reads values, decides? (a) Wi-Fi (b) microcontroller (c) actuator (d) sensor
13. 13.🌐 Is a Wi-Fi doorbell camera an IoT device? (a) not an IoT device (b) an IoT device
14. 14.🌐 What does IoT stand for? (a) Internet of Talk (b) Inside of Toys (c) Internet of Things (d) Input of Tools
15. 15.🔢 To get a sensor reading onto a phone, what comes right after “the sensor measures”? (a) the app shows it (b) the cloud stores it (c) it is sent by Wi-Fi (d) the board reads it
16. 16.🌐 In an IoT system, which part shows data to you? (a) microcontroller (b) phone app (c) Wi-Fi (d) actuator
17. 17.🌐 A weather station sends one reading every 5 seconds. How many readings does it send in 3 minutes?
18. 18.🔍 Which is the odd one out? (a) a plain table fan (b) a Wi-Fi doorbell camera (c) a Wi-Fi weather station (d) a fitness band with app
19. 19.Which of these is not an IoT device? (a) a smart energy meter (b) a Wi-Fi smart plug (c) a Wi-Fi doorbell camera (d) a plain table fan
20. 20.🌐 In an IoT system, which part measures the real world? (a) phone app (b) microcontroller (c) sensor (d) Wi-Fi
21. 21.Which of these is an IoT device? (a) a pencil sharpener (b) a battery torch (c) a wind-up clock (d) a fitness band with app
22. 22.🌐 In an IoT system, which part acts on a command? (a) actuator (b) sensor (c) Wi-Fi (d) cloud server
23. 23.What does the actuator do? (a) measures the real world (b) acts on a command (c) reads values, decides (d) stores data online
24. 24.Which of these is not an IoT device? (a) a fitness band with app (b) a Wi-Fi smart plug (c) a battery torch (d) an app-controlled bulb
25. 25.🌐 Is a smart energy meter an IoT device? (a) an IoT device (b) not an IoT device
26. 26.🌐 Is an app-controlled bulb an IoT device? (a) an IoT device (b) not an IoT device
27. 27.🔍 Which is the odd one out? (a) a battery torch (b) a smart energy meter (c) a plain wall switch (d) a pencil sharpener
28. 28.What does the microcontroller do? (a) reads values, decides (b) acts on a command (c) carries the data (d) measures the real world
29. 29.What does the sensor do? (a) stores data online (b) acts on a command (c) measures the real world (d) shows data to you
30. 30.🌐 A weather station sends one reading every 15 seconds. How many readings does it send in 10 minutes?
31. 31.🔍 Which is the odd one out? (a) a Wi-Fi doorbell camera (b) an app-controlled bulb (c) a pencil sharpener (d) a Wi-Fi weather station
32. 32.🌐 Each reading a sensor sends is 25 bytes. How many bytes do 200 readings take?
33. 33.🌐 A soil sensor sends a reading to an app every 5 minutes. How many readings arrive in 5 hours?
34. 34.🔍 Which is the odd one out? (a) a battery torch (b) a plain wall switch (c) a plain table fan (d) a Wi-Fi smart plug
35. 35.🔍 Which is the odd one out? (a) a Wi-Fi doorbell camera (b) a fitness band with app (c) a wind-up clock (d) a Wi-Fi weather station
36. 36.🌐 Is a battery torch an IoT device? (a) not an IoT device (b) an IoT device
37. 37.🌐 In an IoT system, which part carries the data? (a) phone app (b) Wi-Fi (c) sensor (d) microcontroller
38. 38.Which of these is not an IoT device? (a) a Wi-Fi doorbell camera (b) a fitness band with app (c) a paper calendar (d) a smart energy meter
39. 39.🔢 To get a sensor reading onto a phone, which comes first: “the board reads it” or “the app shows it”? (a) the app shows it (b) the board reads it
40. 40.🌐 Is a Wi-Fi weather station an IoT device? (a) an IoT device (b) not an IoT device

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