VEX IQ Robotics: Gears and Mechanics Quiz
Quiz
•
Instructional Technology
•
8th Grade
•
Practice Problem
•
Medium
JOIE LISA MARIE ROBINSON
Used 8+ times
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10 questions
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1.
MULTIPLE CHOICE QUESTION
45 sec • 10 pts
What is the purpose of using gears in robotics?
To increase the robot's weight
To change the direction of rotation
To adjust the speed and torque of motors
To make the robot look more complex
2.
MULTIPLE CHOICE QUESTION
45 sec • 10 pts
If a gear train has a gear ratio of 5:1, what does it mean?
The output gear is 5 times smaller than the input gear
The output gear rotates 5 times faster than the input gear
The output gear has 5 times more torque than the input gear
The input gear rotates 5 times for every rotation of the output gear
3.
MULTIPLE CHOICE QUESTION
45 sec • 10 pts
What is mechanical advantage?
The advantage of using mechanical systems in robots
It compares the output force a mechanism or machine gives you to the input force that is applied to that mechanism or machine
The increase in speed provided by a mechanical system
The ability of a robot to perform tasks without human intervention
4.
MULTIPLE CHOICE QUESTION
45 sec • 10 pts
In classical mechanics - - -
torque is measured in units of force times distance
is Newton's Second Law of Motion
speed and torque have an inverse (or opposite) relationship
the unit is distance per time such as Km/hr or Meters per Second
5.
MULTIPLE CHOICE QUESTION
45 sec • 10 pts
What happens to the torque when you increase the gear ratio in a gear train?
It decreases
It increases
It remains the same
It becomes zero
6.
MULTIPLE CHOICE QUESTION
45 sec • 10 pts
What is the formula to calculate gear ratio?
Output gear teeth / Input gear teeth
Input gear teeth / Output gear teeth
(Input gear teeth + Output gear teeth) / 2
2 * (Input gear teeth / Output gear teeth)
7.
MULTIPLE CHOICE QUESTION
45 sec • 10 pts
In a gear system, if the input gear has 10 teeth and the output gear has 40 teeth, what is the gear ratio? (Don't forget to reduce!)
1:4
4:1
10:40
40:10
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