Arduino Analog Channel

What is Analog to Digital Conversion (ADC) in Arduino?

• The process of converting digital signals into analog values.

• The process of converting continuous analog signals into discrete digital values.

• A method to convert text data into image format.

• A technique to measure temperature in digital form.

How many analog input pins does Arduino Nano have?

• 4

• 6

• 10

• 8

What is the analog input resolution of Arduino Uno?

• 8 bits

• 12 bits

• 16 bits

• 10 bits

What is the default analog reference voltage for Arduino Uno?

• 3.3 volts

• 5 volts

• 4 volts

• 6 volts

What is the purpose of analog signal processing in Arduino?

• To control the color of RGB LEDs

• To manipulate continuous signals such as sound, light, temperature, etc.

• To convert digital signals into analog signals

• To increase the processing speed of Arduino

How can analog sensors be interfaced with Arduino?

• Connect the analog sensor to the power source directly without interfacing with Arduino

• Use a digital input pin on the Arduino board to read the analog sensor data

• Use a USB connection to directly read data from the analog sensor

• Connect the analog sensor output to an analog input pin on the Arduino board and read the sensor data using analogRead()

What is the range of values that can be represented by a 10-bit ADC?

• 0 to 1023

• 0 to 999

• 0 to 1000

• 0 to 2047

Which Arduino function is used to read analog input values?

• analogRead()

• digitalRead()

• analogWrite()

• readAnalog()

How can the analog reference voltage be changed in Arduino?

• setAnalogReference()

• changeAnalogVoltage()

• analogReference()

• analogWrite()

Explain the concept of voltage divider and its use in analog sensor interfacing.

• A voltage divider is a circuit that divides a voltage into smaller parts using resistors, and it is used in analog sensor interfacing to scale down sensor output voltage for accurate measurement.

• A voltage divider is a circuit that generates random voltages with no specific purpose.

• A voltage divider is a circuit that multiplies a voltage using capacitors.

• A voltage divider is a circuit that combines voltages from different sources.