VR - Blocks - Unit 5 Exam

Which of the following is the best example of something the Distance Sensor can report?

• The location angle of the VR Robot.

• The color of a disk.

• The distance between the front of the Distance Sensor and an object.

• The current heading of the VR Robot.

Which of the following best describes how the Distance Sensor works?

• The Distance Sensor uses the time it takes for a pulse of laser light to reach an object from the sensor.

• The Distance Sensor uses the time it takes for laser light to bounce off of an object and return to the sensor.

• The Distance Sensor uses the time it takes for the VR Robot to reach all objects in the Playground.

• The Distance Sensor uses the time it takes for laser light to bounce off ONLY yellow and orange objects and return to the sensor.

Which of the following best describes what the greater than operator reports?

• If the first value is larger than the second value.

• If the first value is less than the second value.

• If the first value and the second value are equal.

• The first value.

Which of the following is the best description of what this less than (<) operator reports while used as a condition inside of this while loop?

• The height of the wall in the Wall Maze Playground.

• The total time needed to run the project.

• A TRUE or FALSE value.

• The total time the VR Robot has until it reaches an object.

In this sample project the VR Robot should get to the number "2" in the Wall Maze, but it does not. Which of the following describes the error in this project?

• A drive_for command is missing.

• A less than (<) operator was used instead of a greater than (>) operator.

• A turn_for command was used instead of turn command.

• A turn_to_rotation command is missing.

Which is an advantage of being able to monitor Distance Sensor values in the Dashboard when running a VEXcode VR project?

• Allows the user to see what is happening in a VEXcode VR project in real time.

• Allows the user to control what is happening in a VEXcode VR project.

• Allows the user to see what is happening in the Playground Dashboard.

• Allows the user to see a breakdown of each VEXcode VR project step.

Which of the following describes how the VR Robot will move in this project?

• The VR Robot will drive forward while the Distance Sensor reports a distance less than 150 millimeters away from an object, then stop.

• The VR Robot will drive forward while the Distance Sensor reports a distance greater than 150 millimeters away from an object, then stop.

• The VR Robot will drive exactly 150 millimeters then stop.

• The VR Robot will drive forward, stop, drive forward again for 150 millimeters then stop.

How can you monitor the value of the Distance Sensor in the Monitor Console?

• Set the parameter in the Monitor Sensor command to the “drivetrain.rotation” string.

• Set the parameter in the Monitor Sensor command to the “drivetrain.is_done” string.

• Set the parameter in the Monitor Sensor command to the “left_bumper.pressed” string.

• Set the parameter in the Monitor Sensor command to the “distance.get_distance” string.

Which of the following describes why the VR Robot will not move in this example project?

• The distance between the Distance Sensor and the object is less than 150 millimeters (mm) away.

• The Left Bumper is not being pressed.

• The distance between the Distance Sensor and the object is greater than 150 millimeters (mm) away.

• The VR Robot will immediately crash into a wall if it moves.

Which command returns a Boolean value if the Distance Sensor has found an object?

• pressed command.

• get_distance command.

• found_object command.

• near_object command.