Electronics Worksheet: What Is IoT

Electronics lesson 27: What is IoT? · Set 729 · 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 pencil sharpener (b) a plain table fan (c) a battery torch (d) an app-controlled bulb
2. 2.🌐 A weather station sends one reading every 10 seconds. How many readings does it send in 3 minutes?
3. 3.🔍 Which is the odd one out? (a) a plain table fan (b) a plain wall switch (c) a paper calendar (d) a Wi-Fi doorbell camera
4. 4.🌐 A soil sensor sends a reading to an app every 10 minutes. How many readings arrive in 3 hours?
5. 5.Which of these is an IoT device? (a) a paper calendar (b) a plain wall switch (c) a smart energy meter (d) a battery torch
6. 6.🌐 Is a battery torch an IoT device? (a) an IoT device (b) not an IoT device
7. 7.Which of these is not an IoT device? (a) a Wi-Fi smart plug (b) a Wi-Fi weather station (c) a smart energy meter (d) a battery torch
8. 8.🌐 How does a home IoT device usually send its data to the app? (a) by shouting (b) over Wi-Fi (c) by post (d) through a candle
9. 9.🌐 A weather station sends one reading every 5 seconds. How many readings does it send in 2 minutes?
10. 10.What does the phone app do? (a) carries the data (b) acts on a command (c) shows data to you (d) measures the real world
11. 11.🌐 A weather station sends one reading every 30 seconds. How many readings does it send in 7 minutes?
12. 12.🌐 A soil sensor sends a reading to an app every 15 minutes. How many readings arrive in 2 hours?
13. 13.🌐 A weather station sends one reading every 20 seconds. How many readings does it send in 10 minutes?
14. 14.🔍 Which is the odd one out? (a) a plain wall switch (b) a pencil sharpener (c) a battery torch (d) a fitness band with app
15. 15.🌐 A weather station sends one reading every 15 seconds. How many readings does it send in 5 minutes?
16. 16.🌐 In an IoT system, which part reads values, decides? (a) microcontroller (b) cloud server (c) sensor (d) actuator
17. 17.🌐 What does IoT stand for? (a) Input of Tools (b) Internet of Talk (c) Internet of Things (d) Inside of Toys
18. 18.🔢 To get a sensor reading onto a phone, which comes first: “the board reads it” or “it is sent by Wi-Fi”? (a) it is sent by Wi-Fi (b) the board reads it
19. 19.🌐 A weather station sends one reading every 10 seconds. How many readings does it send in 5 minutes?
20. 20.🔍 Which is the odd one out? (a) a Wi-Fi weather station (b) a paper calendar (c) a Wi-Fi doorbell camera (d) a smart energy meter
21. 21.🔍 Which is the odd one out? (a) an app-controlled bulb (b) a smart energy meter (c) a Wi-Fi smart plug (d) a battery torch
22. 22.🌐 Each reading a sensor sends is 10 bytes. How many bytes do 70 readings take?
23. 23.🔍 Which is the odd one out? (a) a plain wall switch (b) a fitness band with app (c) an app-controlled bulb (d) a Wi-Fi weather station
24. 24.🌐 A weather station sends one reading every 5 seconds. How many readings does it send in 5 minutes?
25. 25.🌐 Is a pencil sharpener an IoT device? (a) not an IoT device (b) an IoT device
26. 26.What does the sensor do? (a) measures the real world (b) reads values, decides (c) acts on a command (d) stores data online
27. 27.🔢 To get a sensor reading onto a phone, which comes first: “the sensor measures” or “the app shows it”? (a) the sensor measures (b) the app shows it
28. 28.What does the cloud server do? (a) measures the real world (b) stores data online (c) shows data to you (d) reads values, decides
29. 29.🌐 In an IoT system, which part stores data online? (a) Wi-Fi (b) sensor (c) phone app (d) cloud server
30. 30.🌐 A weather station sends one reading every 60 seconds. How many readings does it send in 7 minutes?
31. 31.🔍 Which is the odd one out? (a) a pencil sharpener (b) a Wi-Fi doorbell camera (c) an app-controlled bulb (d) a fitness band with app
32. 32.🔢 To get a sensor reading onto a phone, what comes right after “the board reads it”? (a) the app shows it (b) the cloud stores it (c) the sensor measures (d) it is sent by Wi-Fi
33. 33.What does the actuator do? (a) acts on a command (b) measures the real world (c) reads values, decides (d) shows data to you
34. 34.🌐 Is an app-controlled bulb an IoT device? (a) not an IoT device (b) an IoT device
35. 35.Which of these is not an IoT device? (a) a wind-up clock (b) an app-controlled bulb (c) a smart energy meter (d) a Wi-Fi smart plug
36. 36.Which of these is an IoT device? (a) a Wi-Fi smart plug (b) a plain table fan (c) a plain wall switch (d) a pencil sharpener
37. 37.🔢 To get a sensor reading onto a phone, what comes right after “the cloud stores it”? (a) the sensor measures (b) it is sent by Wi-Fi (c) the app shows it (d) the board reads it
38. 38.🔢 To get a sensor reading onto a phone, which comes first: “the cloud stores it” or “the app shows it”? (a) the cloud stores it (b) the app shows it
39. 39.🌐 Each reading a sensor sends is 20 bytes. How many bytes do 20 readings take?
40. 40.🌐 A soil sensor sends a reading to an app every 30 minutes. How many readings arrive in 2 hours?

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