Principles and Practice of Engineering (PE) – Mechanical: Machine Design and Materials
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El examen de Principios y Práctica de la Ingeniería (PE) - Mecánica: Diseño de Máquinas y Materiales es un examen de licencia administrado por NCEES para ingenieros que buscan la licencia profesional en la disciplina de diseño de máquinas y materiales. El examen contiene 102 preguntas en un formato basado en computadora y evalúa su capacidad para aplicar principios de ingeniería al diseño, análisis y evaluación de componentes mecánicos, sistemas y los materiales utilizados para construirlos. El contenido abarca seis áreas de conocimiento: Práctica de Ingeniería Básica, Accesorios Mecánicos, Componentes y Ensambles Mecánicos, Mecánica de Materiales, Transmisión de Potencia y Conocimientos de Apoyo.
Preguntas de Muestra
Elige una respuesta y consulta la explicación para ver cómo funciona la práctica.
In estimating cooling loads for a mixed-occupancy space, the adjusted heat gain is based on the normal percentage of men, women, and children. Which of the following correctly states the heat gain of an adult female relative to an adult male?
A facility manager is calculating the Energy Utilization Index (EUI) for a commercial building. Which of the following is a valid basis for determining the EUI?
A mechanical engineer is analyzing the phase change of water from solid ice to liquid water at a constant temperature of 32°F. What is the term for the difference in enthalpy between the saturated solid and saturated liquid states during this transition?
A ball bearing in a conveyor system experiences both a constant radial load and a constant axial load. To calculate the bearing life using the basic load rating equation, what is the correct approach?
A structural engineer is analyzing a column's cross-section and needs to determine the radius of gyration about the x-axis. Which of the following best defines the radius of gyration?
Qué temas cubre este examen
Usa las ponderaciones publicadas de los dominios para planificar tu estudio. Los resultados de práctica no predicen tu puntuación en el examen de certificación.
01Performance
Temas
- Environmental performance of meta ls (e.g., corrosion, hydrogen damage,
- Environmental performance, w eathering, and aging of nonmetals
- Mechanical performance (e.g., instan taneous and time-dependent response to static, dynamic, and cyclic loading)
- Thermal performance (e.g., heat transfer, microstructural stability, oxidation/sulfidation, interactions)
- Wear performance and tribology (e.g., erosion, fretting, abrasive, adhesive, galling, lubricant performance)
- Quality assurance (e.g., NDE, application of standards and specifications, inspection, statistical analysis)
- Failure analysis
- Fitness for service, life predicti on and modelling, and life extension
- Material selection (e.g., Ashby plots)
- Lifecycle analysis (e.g., recyclability, CO2 footprint, sustainability)
Objetivos de aprendizaje
- Environmental performance of meta ls (e.g., corrosion, hydrogen damage,
- Environmental performance, w eathering, and aging of nonmetals
- Mechanical performance (e.g., instan taneous and time-dependent response to static, dynamic, and cyclic loading)
- Thermal performance (e.g., heat transfer, microstructural stability, oxidation/sulfidation, interactions)
- Wear performance and tribology (e.g., erosion, fretting, abrasive, adhesive, galling, lubricant performance)
- Quality assurance (e.g., NDE, application of standards and specifications, inspection, statistical analysis)
- Failure analysis
- Fitness for service, life predicti on and modelling, and life extension
- Material selection (e.g., Ashby plots)
- Lifecycle analysis (e.g., recyclability, CO2 footprint, sustainability)
02Processing
Temas
- Deformation processing (e.g., rolling, fo rging, extruding, stamping, drawing)
- Casting and molding (e.g., sand, die, investment, injection, blow, slip)
- Coating applications (e.g., ther mal sprays, paints, vapor deposition, electroplating, galvanizing)
- Cold work, stress relief, and annealing
- Diffusion and thermal surface treatments
- Joining of metals/polymers (e.g ., brazing, soldering, and welding)
- Heat treatment and other strengthening mechanisms (e.g., quenching, tempering, precipitation hardening, solid solution)
- Powder processing of metals and ceramics (e.g., pressing, sintering)
- Additive manufacturing/3D printing (metals, polymers, ceramics, and composites)
- Polymer and composite material processi ng (e.g., injection molding, extrusion of molten polymers, blow molding, autoclaving, hot isostatic pressing)
Objetivos de aprendizaje
- Deformation processing (e.g., rolling, fo rging, extruding, stamping, drawing)
- Casting and molding (e.g., sand, die, investment, injection, blow, slip)
- Coating applications (e.g., ther mal sprays, paints, vapor deposition, electroplating, galvanizing)
- Cold work, stress relief, and annealing
- Diffusion and thermal surface treatments
- Joining of metals/polymers (e.g ., brazing, soldering, and welding)
- Heat treatment and other strengthening mechanisms (e.g., quenching, tempering, precipitation hardening, solid solution)
- Powder processing of metals and ceramics (e.g., pressing, sintering)
- Additive manufacturing/3D printing (metals, polymers, ceramics, and composites)
- Polymer and composite material processi ng (e.g., injection molding, extrusion of molten polymers, blow molding, autoclaving, hot isostatic pressing)
03Characterization and Properties
Temas
- Structural analysis techniques (e.g., XRD, EBSD, TEM, SEM)
- Chemical analysis techniques (e .g., OES, EDS, mass spectroscopy, wet chemistry)
- Polymer characterization techniques (e.g., chemical, thermal, time-dependent mechanical analyses)
- Corrosion testing
- Characterization of meta llic and nonmetallic coatings
- High-temperature behavior (e.g., thermal stability, creep, stress rupture)
- Low-temperature and cryogenic behavior (e.g., ductile-to-brittle transition, toughness)
- Mechanical property evaluation (e.g., tensile, impact, hardness, fatigue, fracture toughness, high temperature)
- Mechanical behavior of com posites and heterogeneous material
- Physical properties (e.g., density, th ermal conductivity, CTE, optical, magnetic, electrical, dielectric)
Objetivos de aprendizaje
- Structural analysis techniques (e.g., XRD, EBSD, TEM, SEM)
- Chemical analysis techniques (e .g., OES, EDS, mass spectroscopy, wet chemistry)
- Polymer characterization techniques (e.g., chemical, thermal, time-dependent mechanical analyses)
- Corrosion testing
- Characterization of meta llic and nonmetallic coatings
- High-temperature behavior (e.g., thermal stability, creep, stress rupture)
- Low-temperature and cryogenic behavior (e.g., ductile-to-brittle transition, toughness)
- Mechanical property evaluation (e.g., tensile, impact, hardness, fatigue, fracture toughness, high temperature)
- Mechanical behavior of com posites and heterogeneous material
- Physical properties (e.g., density, th ermal conductivity, CTE, optical, magnetic, electrical, dielectric)
04Structure
Temas
- Structures of metals, ceramics, and polymers (e.g., FCC/BCC, degree of cross-linking, imperfections or defects in solids)
- Diffusion and phase transformations
- Fractography
- Materials chemistry
- Microstructure/macrostructure
- Binary and ternary phase diagrams
- Non-equilibrium structures
Objetivos de aprendizaje
- Structures of metals, ceramics, and polymers (e.g., FCC/BCC, degree of cross-linking, imperfections or defects in solids)
- Diffusion and phase transformations
- Fractography
- Materials chemistry
- Microstructure/macrostructure
- Binary and ternary phase diagrams
- Non-equilibrium structures