Engineering Design
An automobile company is thinking about a new, full-size car. This is what they should they do before they Brainstorm ideas.
What is Research
If paper is cut with scissors, what structural stress is being applied to the scissors while it is being cut?
Shear
Reducing the diameter of a pipe will do this to the velocity of the fluid.
What is increase velocity. (and the pressure will decrease too!)
What is meant by the term 'conductor' ?
Electrical conductors allow electricity to flow through them.
A home receiving a lot of exposure to the Sun will benefit from the heating effects of sunlight. By which method will sunlight heat the home?
Radiation
These are the rules that say how safe a structure should be
What are building codes
Steel is a good material to use to suspend the deck in suspension bridges, because steel is very strong in _____________
Tension
Which of the following is an open fluid system? (A) Car's brake system (B) Squirt gun (C) Vascular system (D) Forced hot water heating
(B) Squirt gun
What is meant by the term 'insulator' ?
Regarding electricity, an insulator is a material that doesn't allow current to be transmitted through it. Good examples of insulators are rubber and plastic.
When solar energy is trapped inside a greenhouse, is this an active or passive system?
What are Zoning laws
The floor of a particular motel room should be able to support 50 lb. per sq. ft. of live load. If the dimensions of the room are 10' x 10', this is the total live load that the floor should support?
What is 5000 lbs
A fluid system has a 2:10 area ratio. If the input cylinder receives a force of 10 lbs, what is the output force?
50 lbs of output force (and 5x less distance!)
What is Amps or Amperes?
Concerning energy resources, what is meant by the term 'non-renewable' ?
Non-renewable energy resources means that there is a limited supply of that energy resource. Eventually the supply we have will run out.
Several college students want to design and build a solar-powered car. They have thought of many ideas and chosen one design. This is what they do next to follow an engineering design process
What is Build prototype
This is the shape used in bridges for stability
What is a triangle
Which bend would have the greatest resistance to fluid flow, a 3" diameter pipe, or a 12" diameter pipe?
A 3" diameter pipe would have the greatest resistance. More surface area in contact with the fluid!
What is a switch/fuse/dimmer/timer
etc.
Give three different example of non-renewable energy
Natural gas, gasoline, oil, coal, uranium, plutonium
This is the engineering step once a prototype has been built
What is testing/analzsing results
Concerning costs to run robotics in manufacturing, compare the startup costs to the operating costs
Startup costs are high, yet operating costs are low
Which of the following explains why a sprinkler system is considered an open fluid system? (A) It uses water instead of air. (B) It allows water to evaporate. (C) It allows water to leave the system. (D) It recycles all the water within the system.
(C) It allows water to leave the system.
4 Amps are pushed through a circuit with 20 Volts. This is the resistance of the circuit.
What is 5 Ohms. (V = I x R substitute 20 = 4 x 5)
This concept makes the heat in your home travel upstairs?
What is Convection