2 . Traffic Lights

What are the Traffic Lights?

• Red, Yellow, Green

• Red, Green , Blue

• Blue , Orange , Pink

• Green , Orange , Yellow

What is the purpose of Resistor ?

• To increase the current flow

• To stop the LED blinks

• None of the above

• To resists the flow of current

Which connection is correct ?

• A

• B

• Both A and B

• Both are wrong

Is the given connections are correct ?

• Correct

• none

• Ground connection missed

• Wrong

Which option is correct to make Red LED turn ON ?

• digitalWrite(9, LOW);

  digitalWrite(7, HIGH);

  digitalWrite(5, LOW);

• digitalWrite(9, LOW);

  digitalWrite(7, LOW);

  digitalWrite(5, LOW);

• digitalWrite(9, HIGH);

  digitalWrite(7, LOW);

  digitalWrite(5, LOW);

• digitalWrite(9, High);

  digitalWrite(7, LOW);

  digitalWrite(5, LOW);

How many LEDS we need to do Traffic lights Projects ?

• 3 Leds

• 2 Leds

• 5 Leds

• 4 Leds

What is the purpose of Breadboard ?

• To do temporary connections

• To avoid Permanent connections

• To do permanent connections

• All are correct

Which component is not used in this project ?

• Leds

• Arduino

• Jumper wires

• Bulb

Which Arduino pin configuration is correct for connecting the red, yellow, and green LEDs in a traffic light system?

• Red: pin 5, Yellow: pin 3, Green: pin 4

• Red: pin 9, Yellow: pin 7, Green: pin 5

• Red: pin 2, Yellow: pin 3, Green: pin 4

• Red: pin 2, Yellow: pin 6, Green: pin 4

Which component is used to control the lights in an Arduino traffic light project?

• Microcontroller

• Resistor

• LEDS

• Breadboard