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Technical Design & Engineering Principles Flashcards

7 cards from real ETC practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.

Read the first 7 Technical Design & Engineering Principles flashcards as text

  1. In engineering design, what does FMEA stand for and what is its primary purpose?

    Answer: Failure Mode and Effects Analysis — to identify potential failures and their impacts

    FMEA (Failure Mode and Effects Analysis) is a systematic method for identifying potential failure modes, their causes, and their effects on system performance.

  2. Which type of fit allows two mating parts to be assembled and disassembled by hand without special tools, with a guaranteed clearance?

    Answer: Clearance fit

    A clearance fit guarantees a positive space (clearance) between mating parts in all cases, allowing easy hand assembly.

  3. A cantilever beam with a point load at its free end experiences maximum bending moment at:

    Answer: The fixed support

    For a cantilever with a point load at the free end, the bending moment is zero at the free end and increases linearly to a maximum at the fixed support.

  4. What is the function of a tolerance stack-up analysis in mechanical design?

    Answer: To determine the cumulative effect of individual part tolerances on assembly dimensions

    Tolerance stack-up analysis evaluates how individual part tolerances accumulate through an assembly to determine if functional requirements will be met.

  5. Which section view type is used to show the interior of a part that is not symmetrical by rotating the cutting plane?

    Answer: Offset section

    An offset section view uses a cutting plane that bends or offsets to pass through features not aligned along a single straight line.

  6. In materials science, what does the modulus of elasticity (Young's modulus) describe?

    Answer: The ratio of stress to strain in the elastic region

    Young's modulus is the slope of the linear elastic portion of the stress-strain curve, representing a material's stiffness.

  7. When selecting a welding process for joining thin sheet metal (less than 1/8 inch), which process typically provides the best control and least distortion?

    Answer: Gas Tungsten Arc Welding (GTAW/TIG)

    GTAW (TIG) provides precise heat control via a separate filler rod and non-consumable tungsten electrode, making it ideal for thin materials.