Robotics 2 Final Exam Review (Post Tests 2, 4,
and 5 Combined),
The line-following sensor is designed to operate:
About 1/8" to 1/4" above the line, parallel to the floor
The bumper switches and limit switches can be:
All of the answers are correct (in the test, not Quizlet)
What is the difference between an open-loop system and a closed-loop system?
Closed-loop systems include feedback to the system's program; open-loop systems do
not include feedback.
Sensors provide ______ to a program via the controller.
feedback
The digital sensors contained within the VEX kit are two _________ and two
________.
Bumper and limit switches
The VEX Ultrasonic Sensor is connected to:
A digital output and an interrupt port
Suppose you found that the line-following sensor returned a value of 36 for off
the line and 457 for on the line. What might be a good threshold value to use for
your program?
A value midway between 36 and 457.
If the environmental conditions are such that the speed of sound is 1,000 km/sec
and that an echo takes 250 ms from the ping to the reception, what is the distance
to the object being detected
125 meters
Which sensor detects the amount of rotation?
Wheel encoder
In the real-world example discussed in this unit, the garage door opener utilized a
________ to tell the controller when to cut power to the motor.
limit switch
Which of these is NOT true of the Ultrasonic Sensor:
The sensor will return multiple distances when there are multiple targets.
_________ is an example of an analog sensor.
An ultrasonic rangefinder.
Sensors provide information to the robot concerning:
all of the above (a. the robot's location.
b. the robot's environment.
c. obstacles around the robot.)
The Mars Rover needed to have autonomous driving functions because:
The distance to Mars was so great that real-time remote control was impossible.
and 5 Combined),
The line-following sensor is designed to operate:
About 1/8" to 1/4" above the line, parallel to the floor
The bumper switches and limit switches can be:
All of the answers are correct (in the test, not Quizlet)
What is the difference between an open-loop system and a closed-loop system?
Closed-loop systems include feedback to the system's program; open-loop systems do
not include feedback.
Sensors provide ______ to a program via the controller.
feedback
The digital sensors contained within the VEX kit are two _________ and two
________.
Bumper and limit switches
The VEX Ultrasonic Sensor is connected to:
A digital output and an interrupt port
Suppose you found that the line-following sensor returned a value of 36 for off
the line and 457 for on the line. What might be a good threshold value to use for
your program?
A value midway between 36 and 457.
If the environmental conditions are such that the speed of sound is 1,000 km/sec
and that an echo takes 250 ms from the ping to the reception, what is the distance
to the object being detected
125 meters
Which sensor detects the amount of rotation?
Wheel encoder
In the real-world example discussed in this unit, the garage door opener utilized a
________ to tell the controller when to cut power to the motor.
limit switch
Which of these is NOT true of the Ultrasonic Sensor:
The sensor will return multiple distances when there are multiple targets.
_________ is an example of an analog sensor.
An ultrasonic rangefinder.
Sensors provide information to the robot concerning:
all of the above (a. the robot's location.
b. the robot's environment.
c. obstacles around the robot.)
The Mars Rover needed to have autonomous driving functions because:
The distance to Mars was so great that real-time remote control was impossible.
