Unit 1
What does this symbol stand for? η
efficiency
What does motor.stop() and wait(1, SECONDS) instruction do in code?
Makes the motor stop. Make the code wait 1 second before continuing.
What is the formula for calculating the mechanical advantage of a lever?
MA=effort arm/ resistance arm
What is a cantilever
A structure that is supported on one side
What is the name for a repeated back and forth motion along a straight line?
Reciprocating Motion
What is the formula for power? (Not electrical power)
Power = Work / Time
Purpose of an infinite loop?
To repeat the code inside the loop infinitely
What are the 3 things needed in a circuit
Power supply
Conductors
Load
What is a Free Body Diagram
A graphical model and visual representation of force and object interactions
What are the material properties to take into consideration when making a product? (Five in total)
Thermal conductivity
Elasticity
Wear resistance
Impact resistance
Density
What is the gear ratio of the gears if the driver gear has 36 teeth, and the driven gear has 9? (Write as a simplified fraction)
9/36 or 1/4
What are the 3 types of Machine Learning?
Supervised, unsupervised, and reinforcement learning
What type of energy transformation occurs in a hydroelectric dam?
Kinetic to electrical energy
What forces are on a soccer ball when kicked?
(force that moves and force that slows the ball down)
Applied Force moves the ball then friction force slows it down
What is the formula for calculating the mechanical advantage of a pulley system?
MA=number of supporting ropes
What is the name for a lever that has the load closer to the fulcrum than the effort force?
Second Class Lever
(Ex: Wheelbarrow)
What are 5 types of input devices in vex?
Bumper switch, limit switch, potentiometer, distance sensor, optical sensor
What is the formula for calculating gravitational potential energy?
PE = mgh.
What is the best geometric shape for building and supporting structures
The Triangle
What are the 3 Trigonometry Functions and the formulas?
Sin (Opposite/Hypotenuse), Cos(Adjacent/Hypotenuse), and Tan(Opposite/Adjacent)
What is a sustainable practice for producing electricity and heat in a single process and capturing the heat, that would be otherwise lost, from the system and using it as useful heat?
Cogeneration
what is a K-Nearest-Neighbor (KNN) Algorithm?
A supervised machine-learning algorithm used to classify data points by comparing them to their nearest neighbors.
What is the term for the energy associated with the random motion of particles in a substance?
Thermal energy
What is a moment in Engineering
A measure of the tendency of a force to rotate, bend or twist an object
List all the steps in the Engineering Design Process
Ask, Research, Imagine Solutions, Plan Solutions, Create a Prototype, Test your Prototype and improve your design