Quiz 7A

Which of the following options best describes an analog signal?

• iscrete values.

• Can take any value such as 0.5, 1.8, 0.3

• Can only be on/off.

• Represents digital data.

What type of signal does a photoresistor sensor send when ambient light decreases?

• Digital signal.

• Analog signal.

• PWM signal.

• Radiofrequency signal.

What causes a servomotor to rotate to a specific angle?

• Digital signals.

• PWM signals.

• Analog signals.

• Radiofrequency signals.

Which of the following statements best describes a digital signal?

• It is a signal that can only take values of 0 or 1 or ON and OFF

• It is a signal that can take any value within a continuous range.

• It is a signal that can only represent integers.

• It is a signal that cannot be processed by a microcontroller.

Which of the following components is commonly used to measure light in an Arduino project?

• Ultrasonic sensor.

• Potentiometer.

• Photoresistor.

• Servomotor.

What is the primary application of an ultrasonic sensor in an automated parking project?

• Measure soil humidity.

• Detect nearby objects to avoid collisions.

• Control ambient temperature.

• Adjust light intensity in a room.

How is the position of a servomotor controlled using Arduino?

• By sending PWM pulses.

• By varying current intensity.

• By changing the signal frequency.

• By directly connecting to power pins.

Which of the following statements best describes the purpose of code analysis in Arduino?

• Determine the physical length of the code.

• Find errors or improvements in the code.

• Measure the efficiency of the hardware used.

• Check the quality of the wiring.

Which of the following situations represents an example of an analog signal in everyday life?

• Turning a light switch on or off.

• Changing the TV channel with a remote control.

• Adjusting the radio volume by turning a dial.

• Pressing a button to start a game on a video game console.

What causes a photoresistor to change its electrical resistance?

• Ambient temperature.

• Amount of light received.

• Wind speed.

• Soil humidity.