24/25_ODD_IOT_Quiz4

What is the main aim of interfacing the soil moisture sensor with Arduino?

• To determine the soil moisture level

• To connect the sensor to a computer

• To control the humidity in the air

• To measure the soil temperature

What type of probe does the soil moisture sensor include?

• Circular probe

• Fork-shaped probe

• Straight probe

• Pointed probe

How does the resistance of the soil moisture sensor vary with the moisture content in the soil?

• Decreases with moisture

• Increases with moisture

• Is not affected by moisture

• It remains constant

What type of output does the soil moisture sensor produce based on the resistance?

• Digital output

• Analog output

• Binary output

• Variable output

What is the purpose of the LM393 High Precision Comparator in the sensor module?

• Adjust the sensitivity

• Digitize the output

• Generate power

• Control the LEDs

What is the function of the potentiometer in the sensor module?

• Adjust the sensitivity

• Generate power

• Measure the resistance

• Control the LEDs

What does the Status LED indicate in the sensor module?

• Threshold value exceeded

• Power status

• Low moisture level

• High moisture level

What is the purpose of the 'sensorPower' pin in the Arduino program?

• Adjust the sensitivity

• Power the sensor module

• Control the LEDs

• Read the sensor data

What is the role of the 'readSensor()' function in the Arduino program?

• Control the LEDs

• Read the sensor data

• Power the sensor module

• Adjust the sensitivity

How does the soil moisture sensor determine the moisture content in the soil?

• By measuring temperature changes

• By analyzing soil color

• By detecting resistance changes

• By emitting sound waves