What is the purpose of the Serial.begin() function in Arduino?

• To initialize the serial communication at a specific baud rate

• To begin the execution of the main program

• To initialize the GPIO pins

• To declare a new library

What does the "Wire.begin()" function do in Arduino programming?

• Initializes the SPI communication

• Initializes the I2C communication

• Initializes the ADC

• Initializes the PWM pins

Which Arduino library function is used to control the speed of a DC motor connected to an H-bridge?

• analogWrite()

• digitalWrite()

• Servo.attach()

• Stepper.setSpeed()

Which Arduino library function is used to set the resolution and gain of the ADC (Analog-to-Digital Converter)?

• analogReference()

• analogRead()

• analogWrite()

• attachInterrupt()

What does "millis()" function do :

• Returns the number of milliseconds

• Pauses the program for 1milli seconds

• Stops the program execution

• Returns the number of seconds

"flashDotOrDash” and “flashSequence” functions involve :

• Morse code signaling

• Mirror code signaling

• Mouse code signaling

• Meta code signaling

What is the use of "visual indicator" function?

• Providing visual feedback

• It visualize the code

• Providing visual

• None of these

What the "shiftOut" function do?

• It shifts 2 byte data

• Writes a byte of

  data to a shift register

• It shifts code to compiler

• It shifts code to other line

What will be the output of the following Arduino code?

• 0xAB

• 0xa

• 0

• Error

What will be the output of the following Arduino code?

• 10.21

• 8

• null

• 23