IoTF Practical - Job Sheet 5 Quiz

Which GPIO Number sends current to light up the LED?

• 26

• 23

• 16

• 2

Which GPIO number sends current to send out a sound wave in the ultrasonic sensor?

• 26

• 23

• 16

• 2

Which GPIO number receives a signal from a reflected wave from the ultrasonic sensor?

• 26

• 23

• 16

• 24

Which GPIO pin number powers the ultrasonic sensor?

• 26

• 23

• 16

• 2

What is the voltage required to power up this ultrasonic sensor?

• 3 V

• 3.3 V

• 5 V

• 12 V

The positive polarity of the LED is called the

• cathode

• anode

The negative polarity of the LED is called the

• cathode

• anode

What is the minimum distance required for the LED to light up and show that the object is too close to the ultrasonic sensor.

• 20 cm

• 10 cm

• 30 cm

• 5 cm

Which line of code shows the GPIO library being imported?

• import RPi.GPIO as GPIO

• import time

• GPIO.setmode(GPIO.BCM)

• GPIO.setup(TRIG, GPIO.OUT)

When you see this output after you run job5.py should the LED light up?

• Yes

• No