Mechanical Engineering
What is a simple machine and give me 3 examples of one.
What is a lever, pulley, inclined plane, wheel and axle, wedge, and screw.
What's stronger under tension: steel or concrete?
Steel
What is the purpose of a circuit breaker?
What is a protective device that automatically interrupts the flow of electricity in a circuit when an overcurrent or short circuit occurs. Circuit breakers protect electrical systems and prevent damage to equipment and reduce the risk of fires.
What's the role of a catalyst in a chemical process?
What is a substance that increases the rate of a chemical reaction without being consumed in the process. Lower required activation energy.
What does the moon orbit?
The earth
What's Newton's second law of motion?
What is the force acting on an object is equal to the mass of the object multiplied by its acceleration.
What are 3 of the 5 main branches of civil engineering?
What are Structural, Geotechnical, Transportation, Environmental, and Water Resource Engineering.
What is a transformer and what is its function?
What is an electrical device that transfers electrical energy between two or more circuits through electromagnetic induction.
What's the difference between a homogeneous and heterogeneous reaction?
What is
Homogeneous- Occur in a single phase
Heterogeneous- Involve more than one phase.
Finish the line: An object in motion
What are the differences between AC (alternating current) and DC (direct current) motors?
AC motors are powered by alternating current, which changes direction periodically. They're used in applications where speed needs to be easily controlled.
DC motors are powered by direct current, which flows in one direction. They're typically used in applications requiring precise speed control.
What is 1000 pounds
What's the purpose of grounding?
What is providing a safe path for electrical current to return to the ground in the event of a fault, such as a short circuit.
Name 3 examples of a separation process.
What are distillation, filtration, crystallization, extraction, & membrane separation.
What are 2 of the 4 main forces acting on an aircraft during flight?
What are lift, weight, thrust, and drag.
What is a gear ratio?
What is the ratio between the number of teeth on two meshing gears. It determines the speed and torque output of a gear system.
What's the difference between tensile and compressive strength?
What is
Tensile- The maximum stress that a material can withstand while being stretched or pulled before breaking.
Compressive- The maximum stress that a material can withstand while being compressed before it crushes or fails.
What is Ohm's Law?
What is law stating that current flowing through a conductor between two points is directly proportional to the voltage across the two points and inversely proportional to the resistance (V = IR)
What are the 3 methods of heat transfer?
What is conduction, convection, & radiation.
What is the difference aerodynamics and astrodynamics?
Astrodynamics is in space (no air resistance) and outside of our atmosphere, aerodynamics is within the atmosphere (air resistance)
What's the difference between force and torque?
Force is a push or pull that causes an object to move or change its motion (measured in Newtons N).
Torque is the measure of the rotational force applied to an object around an axis (measured in newton-meters Nm).
How many feet are in a mile?
5280
What's the difference between a synchronous and asynchronous motor?
What is
Synchronous- Rotates at a speed that is synchronized with the frequency of the supply current.
Asynchronous (Induction Motor)- Operates at a speed lower than the supply frequency.
What is fluid dynamics and how is it applied in chemical engineering?
What is the study of how fluids (liquids and gases) move. It helps optimize flow rates, minimize energy consumption, and predict pressure drops in systems.
What is the acceleration of gravity on earth? (ft/s^2)
32.2