What type of microcontroller does the Arduino Uno use?

• ATmega328P

• ATmega2560

• ATtiny85

• ESP8266

2. How many digital I/O pins does the Arduino Uno have?

• 6

• 14

• 20

• 28

3. Which programming language is commonly used to program the Arduino Uno?

• Java

• Python

• JavaScript

• C/C++

2. What is minimum voltage requirement for powering the Arduino Nano?

• 9v

• 3.3v

• 5v

• 12v

What is the primary purpose of a gas detection sensor?

• Detecting gas leaks or concentrations

• Measuring humidity levels

• Detecting temperature changes

• Measuring light intensity

Which component is commonly used as the IR emitter in an IR sensor?

• Photodiode

• LED

• Resistor

• Transistor

Which type of IR sensor measures the distance to an object by detecting the time it takes for the IR light to return?

• Passive IR sensor

• Active IR sensor

• Reflective IR sensor

• Absorptive IR sensor

Which function runs repeatedly in an Arduino sketch?

• main()

• blink()

• setup()

• loop()

How can you increase the blinking speed of an LED?

• Use analogWrite() instead of digitalWrite()

• Increase the delay() values

• Decrease the delay() values

• Use digitalRead() instead of digitalWrite()

What is the default unit of delay in Arduino’s delay() function?

• Milliseconds

• Microseconds

• Seconds

• Minutes