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PLTW IED Midterm Exam

Total questions: 50

Worksheet time: 25mins

Name
Class
Date
1.

Engineers use a design process to:

a)

Avoid iteration

b)

Turn creative ideas into workable solutions

c)

Eliminate teamwork

d)

Avoid documentation

2.

Iteration occurs when a designer:

a)

Skips steps

b)

Repeats steps to improve a design

c)

Avoids feedback

d)

Uses only one prototype

3.

A model is:

a)

Exact replica

b)

Simplified representation

c)

Only physical prototype

d)

Math equation

4.

Box plots show:

a)

Materials

b)

Center & spread of data

c)

Hidden lines

d)

Isometric axes

5.

Effective teams:

a)

Work alone

b)

Communicate clearly

c)

Avoid brainstorming

d)

Skip documentation

6.

Measurable criteria:

a)

Vague

b)

Specific requirements

c)

Optional

d)

Unneeded

7.

Mean is:

a)

Median

b)

Range

c)

Average

d)

Mode

8.

Outlier:

a)

Normal point

b)

Very different value

c)

Median

d)

Q1

9.

Redesign when:

a)

Perfect design

b)

Data shows improvement needed

c)

Team tired

d)

Prototype missing

10.

IQR shows:

a)

Full range

b)

Middle 50%

c)

Mean

d)

Trials

11.

Concept sketch:

a)

Final drawing

b)

Quick idea communication

c)

CAD drawing

d)

Art only

12.

Best front view:

a)

Smallest

b)

Longest dimension

c)

Random

d)

Bottom

13.

Effective feedback:

a)

Vague

b)

Actionable

c)

Only positive

d)

Style-focused

14.

Shading:

a)

Adds dimensions

b)

Adds 3D realism

c)

Shows hidden lines

d)

Aligns views

15.

Engineers sketch because:

a)

Replace prototypes

b)

Communicate visually

c)

Artistic rule

d)

Required by CAD

16.

Accuracy:

a)

Consistency

b)

Closeness to target

c)

Median

d)

Variance

17.

Precision:

a)

Bull’s-eye

b)

Consistency

c)

Average

d)

Range

18.

Distance formula computes:

a)

Force

b)

Distance between points

c)

Mass

d)

Mean

19.

Device error:

a)

Range

b)

Distance from target to data center

c)

Max value

d)

Mode

20.

Precise not accurate:

a)

Tight but off target

b)

Random

c)

Perfect

d)

Zero variation

21.

Design brief has:

a)

Sketches only

b)

Problem, criteria, constraints

c)

Random ideas

d)

Data

22.

Constraint:

a)

Desired feature

b)

Limitation

c)

Bonus

d)

Measurement

23.

Decision matrix:

a)

Tests prototypes

b)

Compares concepts

c)

Makes CAD

d)

Measures error

24.

Grand prize hole:

a)

Any size

b)

Fits 1.5×1.5×0.5 bag

c)

Multiple bags

d)

Decorative

25.

Launches per turn:

a)

1

b)

3

c)

5

d)

Unlimited

26.

Isometric shows:

a)

One face

b)

Three faces (3D)

c)

True shapes

d)

Hidden edges

27.

Width/depth at:

a)

45°

b)

30°

c)

60°

d)

90°

28.

Value scale:

a)

Dimensions

b)

Shading reference

c)

Alignment

d)

Scaling

29.

Best front view:

a)

Least detail

b)

Longest dimension

c)

Random

d)

Top

30.

1:2 scale:

a)

Double

b)

Half

c)

Same

d)

Quarter

31.

3D model:

a)

Replace sketches

b)

Represent object

c)

Decorative only

d)

Replace testing

32.

Subtractive:

a)

Add

b)

Remove material

c)

Shade

d)

Skip sketches

33.

Primitives:

a)

Artwork

b)

Basic shapes

c)

Auto dims

d)

Constraints

34.

Components:

a)

Organize assemblies

b)

Shade objects

c)

Fix errors

d)

Export

35.

Units set because:

a)

Cannot change later

b)

Needed for shading

c)

Not important

d)

Required for colors

36.

Multiview uses:

a)

Perspective

b)

Orthographic projection

c)

Isometric only

d)

Shading

37.

Hidden lines:

a)

Visible edges

b)

Non-visible edges

c)

Center marks

d)

Dimensions

38.

Center marks:

a)

Hidden features

b)

Arc/circle centers

c)

Edges

d)

Patterns

39.

Views must be:

a)

Random

b)

Aligned

c)

Shaded

d)

Vertical only

40.

Projected views from:

a)

Top

b)

Base view

c)

Isometric

d)

Right

41.

Dimensions give:

a)

Decoration

b)

Exact size/location

c)

Shading

d)

Orientation only

42.

Dimension line:

a)

Dashes

b)

Arrowheads

c)

Center marks

d)

Hidden lines

43.

Circle uses:

a)

R

b)

Ø

c)

CM

d)

D

44.

Dimension where:

a)

Smallest

b)

True shape

c)

Hidden

d)

Isometric

45.

Fully dimensioned:

a)

One dim/view

b)

Every feature

c)

No centerlines

d)

Only overall

46.

Abstraction:

a)

Extra detail

b)

Essential details only

c)

Artistic shading

d)

Full realism

47.

Parametric modeling:

a)

Avoids rules

b)

Updates relationships

c)

Freeform only

d)

No sketches

48.

Extrude:

a)

Rotate

b)

Add/remove linearly

c)

Shade

d)

Pattern

49.

Revolve:

a)

Sweep path

b)

Rotate profile around axis

c)

Offset

d)

Pattern

50.

Timeline shows:

a)

Notes

b)

Feature history

c)

Dimensions

d)

Exports

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