Arduino Car: Physics and Chemistry Quiz

What is the primary function of the HC-SR04 ultrasonic sensor in the self-driving car?

• Measure speed

• Detect obstacles

• Control motor speed

• Convert voltage

Which component is responsible for adjusting the direction of the ultrasonic sensor?

• L293B Integrated Circuit

• Servo Motor (SG90)

• DC Motor

• Voltage Regulator (LM7805)

What is the role of the LM7805 voltage regulator in the Arduino car?

• Reduce voltage to a stable 5V for components

• Power the DC motors

• Increase battery voltage by 5V

• Control servo motor movements

Which of the following components is responsible for controlling the movement of the wheels?

• Servo Motor

• L293B Motor Driver

• Ultrasonic Sensor

• Breadboard

Why is a 9V battery used in the Arduino car?

• It is used only for emergency backup power

• It reduces the need for a voltage regulator

• It powers the Arduino board and motors

• It provides direct power to the ultrasonic sensor

The Arduino UNO serves as:

• A wireless communication module for the Arduino UNO self-driving car

• A storage device for sensor readings

• A power supply for the wheels of the self-driving car

• The brain of the car, processing sensor data and controlling components

What is the function of the caster wheel in the self-driving car?

• To generate additional power for the motors

• To detect obstacles in front of the car

• To provide stability and allow smooth turning

• To power the front wheels

What physical principle does the ultrasonic sensor use to detect obstacles?

• Reflection of light waves

• Transmission of electrical signals

• Reflection of sound waves

• Refraction of radio waves

Which type of energy conversion occurs in the servo motor?

• Electrical energy to chemical energy

• Electrical energy to mechanical energy

• Chemical energy to thermal energy

• Mechanical energy to electrical energy

The microcontroller on the Arduino UNO primarily processes information using _____________.

• Analog signals only

• Digital signals only

• Both analog and digital signals

• Mechanical signals