Pre-Engineering Exam study guide – general questions and answers 100% verified.

Pre-Engineering Exam study guide – general questions and answers 100% verified. What are the major engineering fields? - correct answers.Civil Mechanical Electrical Chemical Aerospace Structural What major functions do engineers perform? - correct answers.1. Research- making new discoveries and finding uses 2. Development- production of a functionable device/ process 3. Design- creating/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- be in charge of a program, department or company 9. Consulting- solving problems What type of education is required to be an engineer? - correct answers.1. Bachelors degree at an accredited 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? - correct answers.Engineers use knowledge and skill for the advancement of human welfare. They need to be honest and impartial, increasing the reputation of the engineering profession. Who do engineers interact with? (Other technical personnel on the job) - correct answers.Engineers Scientists Technologists Technicians Craftsmen What important milestones have occurred during the progression of the engineering field? - correct answers.Henry Fords assembly line Wright brothers first flight Thomas Edison's light bulb Robert Goddards' liquid fuel rockets What are the important principles of the problem solving process? - correct ification of a need, problem definition, researching, constraints, criteria, alternative solutions, analysis What are the steps in the design process? - correct answers.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? - correct answers.Efficiency Cost Safety Functionality Availability of materials Durability How to develop details of a solution? - correct answers.Scale model 3D model (dynamic simulation) Orthographic or Isometric drawings CAM or Slicing to Gcode CNC machining + 3D printing How to develop, test, and redesign prototypes? - correct answers.Test for safety and durability Test for efficiency How to explain components of set up, machining, casting, molding, welding, and finishing? - correct answers.Turning- lathe Milling- makes square objects Casting- turns liquid into a solid using a mold Welding- arc, spot, MIG, TIG Finishing- grinding, sanding, painting and coating How to identify and use common hand measuring tools - correct answers.Straight edge- ruler VC (vernier caliper)- measures inside/outside distances How to identify and properly use fasteners? - correct answers.Machine screws- hex nuts Wood screws- course thread/pointy Sheet metal- pointed heads, sharp fine threads How to estimate and measure the size of objects using SI and US units? - correct answers.1 inch = 2.54 cm 1 Liter of water = 1 kilogram ~2.2 lbs 1 gal water = 7-8 lbs How to explain the role and quality control in manufacturing? - correct answers.-Controls the quality -6 Sigma- stands for manufacturing for standardization -Manufacturing tolerances What role does quality control plays in assembly and fabrication? - correct answers.-Improves quality and reputation -Reduces time to complete a part -Lowers costs What are the roles of supplying and outsourcing? - correct answers.-Reordering levels are set -No over stocking (to attain materials in time w/o overstocking) What are the attributes of common metal materials? - correct answers.Ferrous- high weight/ lower conductivity/ easily corrodible/ magnetic Non Ferrous- malleable/ high conductivity How to make an oral presentation? - correct answers.Practice Don't read from slides Speak to the audience How to interpret aspects and/or types of engineering drawings and plans? - correct answers.Orthographic drawings Dimensions/ line drawings How to express data in tables, graphs, and charts? - correct answers.Bar graph- Qualitative Scatter plot with best fit lines- Quantitative How to contribute to a team project? - correct answers.Clear Constructive Communication, Common goal, Vision Build and maintain a good team How to follow appropriate personal safety procedures? - correct answers.Need to know and learn safety rules What role of OSHA is in the technical workplace? - correct answers.Occupational Safety Health Administration -Ensures safety standards are followed through How to use appropriate safety equipment? - correct answers.Eye and ear protection Safety shoes Masks Hazardous material storage Lock out and tag out equipment when performing maintence How electrical safety devices function? - correct answers.Circuit breaker- to switch circuit off when too much current is drawn. Surge protector -when it gets excess current, it converts excess to ground How to simplify problems using vectors to describe forces? - correct answers.Find the X Y components and using the pathagorean theorem and SOHCAHTOA How to calculate and describe the effect of resistance? - correct answers.Resistance = Voltage / Current Resistance = (resistivity x cross-sectional area)/length How to apply Ohms law, Watts law, and Kirchoffs law? - correct answers.Ohms law- Voltage = Current x Resistance Watts Law- Power = Voltage x Current Kirchoffs Current Laws- Current - sum of the current into a node = sum of the current out of the node Voltage - Sum of the voltages around any closed loop in a circuit must equal zero How does AC and DC systems work and differ? - correct answers.DC current- flows in the same direction AC current- wiggles back and forth How to identify what causes resistance in a fluid system? - correct answers.Cross-sectional diameter Length of pipe Number and sharpness of curves Height change Surface roughness How hydraulic and pneumatic systems work? - correct answers.Pressurize a fluid with a Pump, control the flow with Valves, and create motion with Motors and Cylinders; Hydraulic-liquid, Pneumatic- air Three ways heat is transferred - correct answers.Convection- hot to cold (no direct contact) Radiation- to contact (vacuum) Conduction How to convert between Celsius and Ferenheit? - correct answers.(X9/5)+32 from C to F (-32X5)/9 from F to C How heat conductors and insulators work? - correct answers.Head conductors relies on density (more particles) heat can jump How to solve thermal problems using appropriate units? - correct answers.BTU- British thermal unit 1 pound of water needed to get 1 degrees F What are the six simple machines? - correct answers.Pulley Lever Wheel and Axle Wedge Screw Plane How to identify the uses and types if inductors and capacitors? - correct answers.Capacitor- stores electrical energy as an electric field (conductive surface separated by insulators) Inductors- stores energy as a magnetic field (coil of wire) How to use insulation to minimize heat flow? - correct answers.1. sealed windows (vacuum) 2. Fiberglass How to identify electrical components and their functions? - correct answers.Diode - keeps current in 1 direction Transistor- amplifies or switches on electrical signal