NOCTI Pre Engineering Exam study guide
Terms in this set (44)
What are the major engineering fields?
What major functions do engineers perform?
1. Research- making new discoveries and finding uses
2. Development- production of a function able device/ process
3. Design- optimizing/ making easier to produce/ improving performance
4. Production/Testing- mass production + quantity control
5. Construction- Production on a site
6. Operations- managing facilities and networks
7. Sales- consumer creator link, creating a market
8. Management- using background for managing
9. Consulting- solving problems
What type of eduction is required to be an engineer?
1. Bachelors degree at a credited school (ABET or CAEB)
2. Exams- Fundamentals of Engineering test- Engineering in Training (EIT)
3. Practice for 4 years- principles and practice exam- licensed engineer
What important ethics are related to engineering situations?
Engineers use knowledge and skill for the advancement of human welfare. They need to be honest and impartial, increasing reputation of the engineering profession.
Who do engineering interact with? (Other technical personnels on the job)
What important milestones have occurred during the progression of the engineering field?
Henry Fords assembly line
Wright brothers first flight
Thomas Edison's light bulb
Robert Goddars' liquid fuel rockets
What are the important principles of the problem solving process?
identification of a need, problem definition, researching, constraint, criteria, alternative solutions, analysis
What are the steps in the design process?
Identify the need, research and gathering info, develop solution (alternative solutions), choose a solution (analysis), construct a prototype, test and evaluate
How to analyze solution/ identifying strengths and weaknesses?
Availability of materials
How to develop details of a solution?
Inventor (dynamic simulation)
Orthographic Isometric drawing
Techno CNC + 3D printing
How to develop, test, and redesign prototypes?
Test for safety and durability
Test for efficiency
How to explain components of set up, machining, casting, molding, welding, and finishing?
Milling- makes square objects
Casting- turns liquid into mold
Welding- arc, spot, gas (oxyacetylene)
Undercutting- welding reduce cross sectional strength
How to identify and use common hand tools
Straight edge- ruler
VIC (vernier caliper)- measures inside/outside distanxes
How to identify and properly use fasteners?
Machine srews- hex nuts
Wood screws- course thread/pointy
Sheet metal- pointed heads, sharp fine threads
Thread Rotation= UNC 1/4(diameter)-20(thread per inch)-2(thread length)-2A(type of thread)
How to estimate and measure the size of objects using SI and US units?
1 inch = 2.54 cm
100 ft = 28.3 L
1 gal water = 7-8 lbs
How to explain the role and quality control in manufacturing?
-Controls the quality
-bSigma- stands for manufacturing for standardization
How to measure with percussion to olds and instruments?
What role does quality control plays in assembly and fabrication?
-Improves quality and reputation
-Reducing execution time
What are the roles of supplying and outsourcing?
-Reordering levels are set
-No over stocking
(to attain materials in time w/o overstocking)
What does the order and methodology of the assembly process consist of?
What are the attributes of common materials?
Ferrous- high weight/ lower conductivity/ easily corrodible/ magnetic
Non Ferrous- malleable/ high conductivity
How to make an oral presentation?
Don't read from slides
Speak to the audience
How to interpret aspects and/or types of engineering drawings and plans?
Dimensions/ line drawings
How to express data in tables, graphs, and charts?
Bar graph- qualitative
How to contribute to a team project?
Common goal, vision
Find a good team
How to follow appropriate personal safety procedures?
Need to know and learn safety rules
What role of OSHA is in the technical workplace?
Occupational safety + help admin
Ensure safety standards are followed through
How to use appropriate safety equipment?
Eye and ear protection
Hazardous material storage
How electrical safety decries function?
to switch circuit off, surge protector, when it gets excess/ it converse excess to ground
How to solve problems using vectoring to persist forces?
X Y components
How to calculate and describe the effect of resistance?
How to apply Ohms law, Watts law, and Kirchoffs law?
Ohms law- V=IR^2
Watt- power= voltage x current
Kirchoffs- sum of voltage in = sum of voltage out
How does AC and DC systems work and differ?
DC current- flows in the same direction
AC current- constantly flows
How to identify what causes resistance in a fluid system?
Smoother pige inside
As few curves as possible motor cylinder piston
How hydraulic and pneumatic systems work?
Pump, Valce, Motor/Cylinder
Hydraulic motor- generates power
Pneumatic- pressurized fluId
Three ways heat is transferred
Convection- hot to cold (no direct contact)
Radiation- to contact (vacuum)
How to convert between Celsius and Ferenheit?
(X9/5)+32 <from C to F>
(-32X5)/9 <from F to C>
How heat conductors and insulators work?
Head conductors relies on density (more particles) heat can jump
How to solve thermal problems using appropriate units?
BTU- British thermal unit
1 pound of water needed to get 1 degrees F
What are the six simple machines?
Wheel and Axel
How to solve problems using appropriate units in engineering systems?
Increase velocity of liquid
Increase force or increase area absolute p + gauge = atmospheric pressure
How to identify the uses and types if inductors and capacitors?
Capacitor- stores electrical energy
Inductors- stores energy (w/ magnetic field)
How to use insulation to minimize heat flow?
1. sealed windows (vacuum)
How to identify electrical components and their functions?
Diode limits- keeps current in 1 direction
Translator- amplifies or switches on electrical signal
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