What is the full form of IDE in Arduino IDE?

• Integrated Development Environment

• Interactive Development Environment

• Intelligent Development Environment

• Interconnected Development Environment

What is the purpose of the pinMode() function?

• To initialize the input and output pins of digital pins

• To begin the serial communication

• To initialize the input and output pins of analog  pins

• To initialize the PWM output pins

Which of the following is not a valid analog input pin in Arduino Uno?

• A0

• A1

• A5

• A8

What is a buzzer?

• Digital Sensor

• Digital Actuator

• Analog Sensor

• Analog Actuator

A program written with the IDE for Arduino is called ___ 

• IDE source

• source code

• crypt

• sketch

What is the principle of operation of ultrasonic sensors?

• Reflection of sound waves

• Refraction of sound waves

• Interference of sound waves

• Absorption of sound waves

 In which of the following types of piezoelectric buzzers can you control the frequency?

• Magnetic buzzers

• Active buzzers

• External-driven buzzers

• Passive buzzers

Which of the following statements about piezoelectric buzzers is true?

• They can only generate sound at a fixed frequency

• They can generate sound at a range of frequencies

• They can only generate sound at a variable frequency

• They cannot generate sound at all

Which of the following statements is TRUE about ultrasonic sensors operating in air?

• The speed of sound in air is constant, independent of temperature and pressure.

• Ultrasonic sensors can operate over long distances without any loss of accuracy.

• Ultrasonic sensors are not affected by background noise in air.

• Ultrasonic sensors have a maximum operating range in air.

Which function is used to read analog signals in Arduino IDE?

• analogWrite()

• digitalRead()

• analogRead()

• digitalWrite()