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Unit 3 - Practice Quiz

MEC136

1 What is the primary meaning of the term 'Orthographic'?

A. Straight writing
B. Right-angled drawing
C. Angular projection
D. Parallel view

2 In orthographic projection, the projectors are drawn ____ to the plane of projection.

A. Parallel
B. Perpendicular
C. Inclined at 45 degrees
D. Tangent

3 Where is the observer assumed to be located in an orthographic projection?

A. At a finite distance
B. At an infinite distance
C. Inside the object
D. Touching the plane

4 The two principal planes of projection are usually designated as:

A. Vertical Plane (VP) and Profile Plane (PP)
B. Horizontal Plane (HP) and Vertical Plane (VP)
C. Ground Plane (GP) and Picture Plane (PP)
D. Auxiliary Plane (AP) and Vertical Plane (VP)

5 The Front View of an object is projected onto which plane?

A. Horizontal Plane
B. Vertical Plane
C. Profile Plane
D. Auxiliary Plane

6 In standard orthographic projection, the intersection of the Horizontal Plane and Vertical Plane is called the:

A. Profile Line
B. Reference Line (XY Line)
C. Projector Line
D. Trace Line

7 In First Angle Projection, the object is positioned in which quadrant?

A. First Quadrant
B. Second Quadrant
C. Third Quadrant
D. Fourth Quadrant

8 In Third Angle Projection, what is the relative position of the plane of projection?

A. Between the observer and the object
B. Behind the object
C. Perpendicular to the observer only
D. Irrelevant

9 When converting 3D to 2D in orthographic projection, how is the Horizontal Plane (HP) manipulated?

A. It remains fixed
B. It is rotated 90 degrees clockwise
C. It is rotated 90 degrees counter-clockwise
D. It is folded upwards

10 In First Angle Projection, where is the Top View drawn relative to the Front View?

A. Above the Front View
B. Below the Front View
C. To the left of the Front View
D. To the right of the Front View

11 In Third Angle Projection, where is the Top View drawn relative to the Front View?

A. Above the Front View
B. Below the Front View
C. Overlaying the Front View
D. Beside the Front View

12 Which projection system is commonly used in the United States?

A. First Angle Projection
B. Third Angle Projection
C. Isometric Projection
D. Oblique Projection

13 The standard symbol for First Angle Projection looks like:

A. Two concentric circles on the left, a trapezoid on the right
B. A trapezoid on the left, two concentric circles on the right
C. A square and a circle
D. Two triangles

14 In First Angle Projection, the Left Side View is drawn on which side of the Front View?

A. Left side
B. Right side
C. Top side
D. Bottom side

15 Which line type is used to represent invisible edges in an orthographic drawing?

A. Continuous thick line
B. Center line
C. Hidden line (dashed)
D. Phantom line

16 Which AutoCAD command is used to load and manage different line styles like Dashed or Center?

A. LINE
B. LINETYPE
C. LAYER
D. PROPERTIES

17 A Center Line is represented by:

A. Continuous thin line
B. Short dashes only
C. Alternating long and short dashes
D. Zig-zag line

18 Which AutoCAD command allows you to move objects a specified distance in a specified direction?

A. PAN
B. MOVE
C. COPY
D. ARRAY

19 What is the shortcut key for the MOVE command in AutoCAD?

A. MO
B. M
C. MV
D. O

20 To rotate an object in AutoCAD, you must define a:

A. Base point
B. Mirror line
C. Scale factor
D. Displacement vector

21 Positive rotation in AutoCAD is typically in which direction?

A. Clockwise
B. Counter-Clockwise
C. Upwards
D. Downwards

22 Which command creates a duplicate of an object while leaving the original in place?

A. MOVE
B. MIRROR
C. COPY
D. ROTATE

23 Which command is used to remove unwanted portions of a line that crosses another object?

A. ERASE
B. DELETE
C. TRIM
D. BREAK

24 What is the shortcut key for the TRIM command in AutoCAD?

A. T
B. TR
C. TM
D. TI

25 Which command deletes an entire object from the drawing?

A. TRIM
B. CUT
C. ERASE
D. REMOVE

26 To create a symmetrical copy of an object across a line, which command is used?

A. COPY
B. ROTATE
C. MIRROR
D. ARRAY

27 When using the MIRROR command, AutoCAD asks if you want to:

A. Scale the source object
B. Erase source objects
C. Rotate source objects
D. Trim source objects

28 Which command changes the size of an object proportionally?

A. STRETCH
B. EXTEND
C. SCALE
D. ZOOM

29 If you apply a Scale Factor of 0.5, the object will:

A. Double in size
B. Reduce to half its size
C. Rotate 50 degrees
D. Move 0.5 units

30 Which command connects two objects with a tangent arc (rounded corner)?

A. CHAMFER
B. FILLET
C. ARC
D. BLEND

31 If the Radius is set to 0 in the FILLET command, what is the result?

A. A circular corner
B. No change
C. A sharp corner
D. An error

32 Which command connects two lines with a beveled (angled) corner?

A. FILLET
B. CHAMFER
C. TRIM
D. EXTEND

33 To define a Chamfer, you usually specify:

A. Radius
B. Two distances or a distance and an angle
C. Center point
D. Diameter

34 Which command creates multiple copies of an object in a pattern?

A. COPY
B. MULTIPLE
C. ARRAY
D. GROUP

35 In a Rectangular Array, the pattern is defined by:

A. Center point and angle
B. Rows and Columns
C. Path and items
D. Radius and axis

36 Which type of Array distributes objects around a center point?

A. Rectangular
B. Polar
C. Path
D. Circular

37 When using the LTSCALE command, what are you adjusting?

A. The thickness of the line
B. The length of the line
C. The scale factor of the linetype pattern
D. The color of the line

38 In orthographic projection, if a surface is parallel to a plane of projection, its projection on that plane is:

A. A line
B. True shape and size
C. Foreshortened
D. A point

39 In orthographic projection, if a surface is perpendicular to a plane of projection, it appears as:

A. True shape
B. A line
C. A point
D. Distorted

40 In AutoCAD, to ensure lines are drawn perfectly horizontal or vertical, which mode should be ON?

A. SNAP
B. GRID
C. ORTHO
D. OSNAP

41 What is the function of Object Snap (OSNAP)?

A. Snaps to grid points
B. Snaps to specific geometric points on objects
C. Restricts angle movement
D. Automatically dimensions the object

42 When drawing orthographic views in AutoCAD, which command helps project features from one view to another accurately?

A. XLINE (Construction Line)
B. ARC
C. SPLINE
D. DONUT

43 Which view usually gives the most information about the object?

A. Top View
B. Side View
C. Front View
D. Bottom View

44 The dimension showing the depth (width) of an object is common to which two views?

A. Front and Top
B. Front and Side
C. Top and Side
D. Front and Rear

45 In AutoCAD, which key allows you to quickly repeat the last used command?

A. Spacebar or Enter
B. Shift
C. Tab
D. Esc

46 What is the result of the EXPLODE command on an Array?

A. It deletes the array
B. It converts the associative array into individual objects
C. It changes the array type
D. It hides the array

47 Which AutoCAD command is used to restore the most recently erased objects?

A. OOPS
B. REDO
C. BACK
D. RETURN

48 A 'Miter Line' drawn at 45 degrees is used to transfer dimensions between:

A. Front View and Top View
B. Front View and Side View
C. Top View and Side View
D. Isometric and Orthographic

49 If a line is inclined to the HP and parallel to the VP, its Front View will be:

A. A point
B. A line shorter than true length
C. True length and inclined
D. A horizontal line

50 In AutoCAD, 'Window Selection' (dragging left to right) selects:

A. Anything the window touches
B. Only objects completely inside the window
C. Only text objects
D. The last drawn object