Arduino Evaporative Cooling System Quiz

What is the primary function of the fan in the evaporative cooling system?

• To measure the temperature inside the box

• To provide light inside the box

• To circulate air over the water to promote evaporation

• To heat the air inside the box

How does the system determine when to turn the fan on?

• When the humidity is too high

• When the temperature sensor detects a temperature above a set threshold

• When the water level is low

• When the box is opened

How does the system behave like a thermostat?

• It changes the color of the box based on temperature

• It measures the air pressure inside the box

• It turns the fan on and off based on temperature thresholds

• It adjusts the humidity inside the box

Which of the following can be adjusted to optimize the cooling system?

• The length of the power cable

• The color of the box

• The placement of the fan and vent holes

• The type of Arduino used

What is the role of the TMP 36 temperature sensor in the circuit?

• To control the fan speed

• To act as a switch for the fan

• To measure the temperature and provide an analog voltage output

• To provide power to the Arduino

Why is the temperature sensor connected directly to the Arduino?

• To reduce electrical noise that can affect temperature readings

• To make the circuit easier to understand

• To save space on the breadboard

• To increase the power supply to the sensor

What is the purpose of the MOSFET in the circuit?

• To convert analog signals to digital

• To provide a backup power supply

• To control a higher current load like the fan

• To amplify the temperature readings

What does PWM stand for, and how is it related to fan control?

• Pulse Width Modulation; it allows varying the fan speed

• Power Width Measurement; it measures power usage

• Power Width Modulation; it increases fan power

• Pulse Width Measurement; it measures fan speed

What is the significance of the analog reference voltage in the code?

• It provides a stable reference for accurate temperature readings

• It stabilizes the power supply to the fan

• It adjusts the brightness of the LEDs

• It controls the speed of the fan

What is the purpose of the serial print statements in the code?

• To control the fan speed

• To adjust the power supply

• To print temperature values for monitoring

• To display the current time