Quiz #8 (CC106)

What component acts as an electronically operated switch to turn on and off high-voltage devices?

• Transistor

• Potentiometer

• Relay

• Diode

Which Arduino function is used to configure a pin as an output for driving the relay?

• digitalWrite()

• pinMode()

• analogRead()

• Serial.begin()

What argument do you pass to digitalWrite() to activate (turn on) the relay?

• LOW

• INPUT

• HIGH

• OUTPUT

Which function initializes serial communication for the serial-monitor control version?

• Serial.read()

• Serial.available()

• Serial.begin()

• Serial.print()

What baud rate is configured with Serial.begin() in the tutorial?

• 9600

• 57600

• 115200

• 74880

What two environmental parameters can the DHT sensor read?

• Pressure and light

• Temperature and pressure

• Temperature and humidity

• Humidity and soil moisture

How many pins does the DHT sensor have?

• Two

• Three

• Four

• Five

What is the exact name of the library installed?

• DHT Sensor Library

• DHT11 Library

• HumidityTemp Library

• DHT22 Library

Which header is included to use the DHT functions in code?

• A. #include <Wire.h>

• B. #include <DHT.h>

• C. #include <SPI.h>

• D. #include <Adafruit_Sensor.h>

Which method initializes the DHT sensor in setup()?

• dht.setup()

• dht.init()

• dht.begin()

• dht.start()