1Which grade of pencil is typically used for drawing center lines and section lines to ensure they are thin and sharp?
A.HB
B.2H or 3H
C.B
D.6B
Correct Answer: 2H or 3H
Explanation:Harder pencils like 2H or 3H are used for drawing thin, sharp, and light lines such as center lines, dimension lines, and construction lines.
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2The T-square is primarily used to draw which type of lines?
A.Vertical lines
B.Inclined lines
C.Horizontal lines
D.Curved lines
Correct Answer: Horizontal lines
Explanation:The T-square slides along the edge of the drawing board and is used to draw horizontal parallel lines.
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3Which instrument is used to transfer dimensions from a scale to the drawing paper with high precision?
A.Compass
B.Protractor
C.Divider
D.Clinograph
Correct Answer: Divider
Explanation:A divider has two needle points and is used specifically for transferring distances or dimensions from a scale to a drawing.
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4In engineering drawing, visible outlines or object lines are represented by which type of line?
A.Continuous thin line
B.Continuous thick line
C.Dashed thin line
D.Long dashed dotted line
Correct Answer: Continuous thick line
Explanation:Visible edges and outlines of an object are drawn using continuous thick lines (Type A lines) to make them stand out.
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5A line composed of a long dash followed by a dot and then a long dash represents:
A.Hidden edges
B.Center lines
C.Dimension lines
D.Cutting planes
Correct Answer: Center lines
Explanation:Center lines (or lines of symmetry) are represented by a chain thin line (long dash, dot, long dash).
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6Hidden edges of an object are drawn using:
A.Continuous thick lines
B.Short dashed lines
C.Long dashed dotted lines
D.Wavy lines
Correct Answer: Short dashed lines
Explanation:Hidden lines, representing edges not directly visible from the viewing angle, are drawn as dashed lines (Type E or F).
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7Which line type is used to indicate a cutting plane?
A.Continuous thin wavy line
B.Chain thin line with thick ends
C.Dashed line
D.Continuous thick line
Correct Answer: Chain thin line with thick ends
Explanation:Cutting planes are shown by a chain thin line that is thickened at the ends and at changes of direction.
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8The standard length-to-width ratio of an arrowhead in dimensioning is:
A.1:1
B.2:1
C.3:1
D.4:1
Correct Answer: 3:1
Explanation:In engineering drawing standards, the length of the arrowhead should be roughly three times its width.
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9In the 'Aligned System' of dimensioning, how are the dimensions placed?
A.Parallel to the dimension line and readable from the bottom or right
B.Horizontal only, readable from the bottom
C.Perpendicular to the dimension line
D.Inside the object boundaries only
Correct Answer: Parallel to the dimension line and readable from the bottom or right
Explanation:In the Aligned System, dimensions are placed parallel to the dimension line so they can be read from the bottom or the right-hand side of the drawing sheet.
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10The symbol 'Ø' in dimensioning indicates:
A.Radius
B.Diameter
C.Depth
D.Square
Correct Answer: Diameter
Explanation:The symbol Ø (Phi) is universally used to denote the diameter of a circle or hole.
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11Extension lines should extend how far beyond the dimension line?
A.They should stop exactly at the dimension line
B.3 mm to 5 mm
C.10 mm
D.Approx. 100 mm
Correct Answer: 3 mm to 5 mm
Explanation:Extension lines should extend slightly past the dimension line, typically about 3 mm, to clearly define the range of the dimension.
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12What does 'Single Stroke' mean in lettering?
A.The letter is written without lifting the pen
B.The thickness of the line equals the width of the pen tip
C.Only one font is used
D.Letters are written in one continuous horizontal line
Correct Answer: The thickness of the line equals the width of the pen tip
Explanation:Single stroke means the thickness of the line of the letter is obtained in one stroke of the pencil or pen, resulting in uniform thickness.
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13Vertical Gothic lettering implies that the stems of the letters are:
A.Inclined at 75 degrees
B.Perpendicular to the horizontal guidlines
C.Thick and Thin (Serif)
D.Italicized
Correct Answer: Perpendicular to the horizontal guidlines
Explanation:Vertical lettering means the upright strokes are perpendicular (90 degrees) to the horizontal baselines.
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14Representative Fraction (RF) is defined as:
A.Actual Length / Drawing Length
B.Drawing Length / Actual Length
C.Area of Drawing / Actual Area
D.Actual Length x Drawing Length
Correct Answer: Drawing Length / Actual Length
Explanation:RF is the ratio of the length of the object on the drawing to the actual length of the object, with both units being the same.
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15A scale of 1:50 is an example of:
A.Enlarging Scale
B.Reducing Scale
C.Full Scale
D.Diagonal Scale
Correct Answer: Reducing Scale
Explanation:1:50 means 1 unit on the drawing represents 50 units in reality, which reduces the size of the representation.
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16Which scale is used to represent three consecutive units (e.g., meters, decimeters, centimeters)?
A.Plain Scale
B.Vernier Scale
C.Diagonal Scale
D.Chord Scale
Correct Answer: Diagonal Scale
Explanation:A diagonal scale is used to measure very small subdivisions and can read up to three consecutive units (or to two decimal places).
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17A Plain Scale is capable of reading how many units?
A.One unit only
B.Two units or a unit and its subdivision
C.Three units
D.Angles
Correct Answer: Two units or a unit and its subdivision
Explanation:Plain scales are constructed to measure two units (e.g., cm and mm) or a unit and its first subdivision.
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18The principle used in the construction of a Diagonal Scale is:
A.Pythagoras theorem
B.Principle of similar triangles
C.Archimedes principle
D.Golden ratio
Correct Answer: Principle of similar triangles
Explanation:Diagonal scales rely on the principle of similar triangles to divide a short line segment into equal parts.
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19If an object 10m long is represented by a line 10cm long, the R.F. is:
A.1:10
B.1:100
C.1:1000
D.10:1
Correct Answer: 1:100
Explanation:10cm / 10m = 10cm / 1000cm = 1/100.
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20The default file extension for an AutoCAD drawing file is:
A..dxf
B..dwg
C..dwt
D..pdf
Correct Answer: .dwg
Explanation:.dwg is the native file format for AutoCAD drawing data.
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21Which key is pressed to toggle 'Ortho Mode' on and off in AutoCAD?
A.F3
B.F7
C.F8
D.F10
Correct Answer: F8
Explanation:F8 is the function key assigned to toggle Ortho mode, which restricts cursor movement to vertical and horizontal directions.
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22The command used to set the drawing units in AutoCAD is:
A.SET
B.UNITS
C.SCALE
D.DIM
Correct Answer: UNITS
Explanation:Type 'UNITS' (or 'UN') to open the Drawing Units dialog box to define precision and measurement type.
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23What is the purpose of the 'LIMITS' command in AutoCAD?
A.To limit the number of layers
B.To set the boundary of the drawing area
C.To limit file size
D.To restrict the zoom level
Correct Answer: To set the boundary of the drawing area
Explanation:LIMITS sets the lower-left and upper-right corners of the drawing area (grid display area).
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24In AutoCAD, the Cartesian coordinate system uses which axes for 2D drafting?
A.X and Z
B.Y and Z
C.X and Y
D.X, Y, and Z
Correct Answer: X and Y
Explanation:2D drafting primarily utilizes the X (horizontal) and Y (vertical) axes.
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25To specify a Relative Polar Coordinate in AutoCAD, the syntax used is:
A.x,y
B.@x,y
C.@distance<angle
D.#distance,angle
Correct Answer: @distance<angle
Explanation:The '@' symbol indicates relative to the last point, and '<' introduces the angle (e.g., @50<45).
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26What does UCS stand for in AutoCAD?
A.Universal Computer System
B.User Coordinate System
C.Unified CAD Standard
D.User Control Settings
Correct Answer: User Coordinate System
Explanation:UCS stands for User Coordinate System, which defines the origin and orientation of the X, Y, and Z axes in the drawing space.
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27Which function key toggles the Object Snap (OSNAP) mode?
A.F1
B.F3
C.F5
D.F9
Correct Answer: F3
Explanation:F3 turns running Object Snaps on and off.
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28The geometric shape displayed by OSNAP when snapping to a Midpoint is a:
A.Square
B.Circle
C.Triangle
D.Diamond
Correct Answer: Triangle
Explanation:In AutoCAD, a triangle indicates the Midpoint object snap.
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29The geometric shape displayed by OSNAP when snapping to an Endpoint is a:
A.Square
B.Circle
C.Triangle
D.Cross
Correct Answer: Square
Explanation:In AutoCAD, a square indicates the Endpoint object snap.
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30Which AutoCAD command allows you to move the drawing view without changing the coordinates or magnification?
A.MOVE
B.PAN
C.ZOOM
D.ROTATE
Correct Answer: PAN
Explanation:PAN (often accessed by holding the middle mouse button) shifts the view of the drawing laterally.
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31The F7 key in AutoCAD is used to:
A.Toggle Grid Display
B.Toggle Ortho
C.Toggle Snap
D.Toggle Help
Correct Answer: Toggle Grid Display
Explanation:F7 turns the background grid on and off.
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32Which coordinate entry method is represented by entering '10,20' directly in the command line?
A.Relative Rectangular
B.Absolute Rectangular
C.Relative Polar
D.Direct Distance
Correct Answer: Absolute Rectangular
Explanation:Entering simple x,y coordinates relates directly to the origin (0,0), making it Absolute Rectangular coordinates.
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33What is the function of the 'Zoom All' command?
A.Zooms to the last view
B.Zooms to fit the drawing limits or extents
C.Zooms to a specific window
D.Zooms in by 2x
Correct Answer: Zooms to fit the drawing limits or extents
Explanation:Zoom All (Z > A) adjusts the magnification of the drawing area to show the entire drawing limits or the drawing extents, whichever is larger.
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34Which F-key is used to access the AutoCAD Help menu?
A.F1
B.F2
C.F11
D.F12
Correct Answer: F1
Explanation:F1 is the standard Windows convention for Help, used in AutoCAD as well.
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35What does the '@' symbol mean when entering coordinates in AutoCAD?
A.Absolute coordinate
B.Relative to the origin (0,0)
C.Relative to the last point entered
D.Polar angle
Correct Answer: Relative to the last point entered
Explanation:The '@' symbol tells AutoCAD to calculate the new point relative to the last point placed.
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36Which OSNAP setting would you use to snap to the quadrant points (0, 90, 180, 270 degrees) of a circle?
A.Center
B.Quadrant
C.Tangent
D.Perpendicular
Correct Answer: Quadrant
Explanation:The Quadrant snap targets the 0, 90, 180, and 270-degree points on a circle or arc.
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37The command line window in AutoCAD can be hidden or shown by pressing:
A.Ctrl + 9
B.Ctrl + C
C.Ctrl + S
D.Ctrl + P
Correct Answer: Ctrl + 9
Explanation:Ctrl + 9 is the shortcut toggle for the visibility of the command line palette.
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38F9 key is used for:
A.Grid
B.Snap Mode
C.Ortho
D.Polar
Correct Answer: Snap Mode
Explanation:F9 toggles Snap Mode, which constrains the cursor to move in specific intervals (usually tied to the grid).
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39Which direction are angles measured in AutoCAD by default?
A.Clockwise
B.Counter-Clockwise
C.Vertical
D.Horizontal
Correct Answer: Counter-Clockwise
Explanation:By default, AutoCAD measures positive angles in a counter-clockwise direction starting from the positive X-axis (East).
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40Which AutoCAD interface element displays the cursor coordinates and drafting aid buttons (Grid, Ortho, Osnap)?
A.The Ribbon
B.The Status Bar
C.The Command Line
D.The Quick Access Toolbar
Correct Answer: The Status Bar
Explanation:The Status Bar is located at the bottom of the application window and contains coordinates and toggles for drafting settings.
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41A 2:1 scale indicates that the drawing is:
A.Half the size of the object
B.Twice the size of the object
C.The same size as the object
D.One tenth the size
Correct Answer: Twice the size of the object
Explanation:2 units on drawing = 1 unit in reality. This is an enlarging scale.
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42The lower-left corner of the drawing limits is usually set to:
A.100,100
B.0,0
C.10,10
D.Negative values
Correct Answer: 0,0
Explanation:Standard practice is to set the lower-left corner at the origin (0,0).
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43Which key toggles Polar Tracking?
A.F8
B.F10
C.F11
D.F12
Correct Answer: F10
Explanation:F10 toggles Polar Tracking, which restricts cursor movement to specified angles.
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44In lettering, the height of lower-case letters relative to capital letters (approximate ratio) is often:
A.Same height
B.2/3 to 3/4 of capital height
C.1/2 of capital height
D.1/4 of capital height
Correct Answer: 2/3 to 3/4 of capital height
Explanation:While standards vary, lower case stems generally reach the capital height, but the body is typically about 2/3 to 3/4 (or 7/10 per IS standards) of the height of capital letters.
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45A continuous thin line drawn freehand is used to represent:
A.Visible edges
B.Limits of partial or interrupted views (Break line)
C.Center line
D.Dimension line
Correct Answer: Limits of partial or interrupted views (Break line)
Explanation:A freehand continuous thin line is used as a break line to show short breaks or irregular boundaries.
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46What is the function of the 'Escape' (Esc) key in AutoCAD?
A.Save file
B.Cancel current command
C.Repeat last command
D.Open help
Correct Answer: Cancel current command
Explanation:Esc is used to cancel the active command or deselect objects.
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47The WCS icon typically appears in which corner of the drawing area?
A.Top-Left
B.Top-Right
C.Bottom-Left
D.Bottom-Right
Correct Answer: Bottom-Left
Explanation:The UCS/WCS icon is anchored in the bottom-left corner of the viewport by default.
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48If you need to draw a line exactly 45 degrees from the horizontal, but Ortho is ON, what happens?
A.You can draw the line easily
B.The line is forced to 0 or 90 degrees
C.The line becomes curved
D.AutoCAD crashes
Correct Answer: The line is forced to 0 or 90 degrees
Explanation:Ortho mode strictly enforces horizontal (0/180) or vertical (90/270) movement; it prevents diagonal drawing with the mouse unless coordinate overrides are used.
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49Which instrument is NOT typically used for linear measurement?
A.Scale (Ruler)
B.Protractor
C.Diagonal Scale
D.Vernier Scale
Correct Answer: Protractor
Explanation:A protractor is used for measuring angles, not linear distances.
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50In a diagonal scale, the vertical division of the short end is divided into how many parts to measure the second decimal (if measuring meters to cm)?
A.5
B.10
C.50
D.100
Correct Answer: 10
Explanation:To achieve the next level of precision (e.g., 1/100th of the main unit), the vertical height is divided into 10 equal parts.
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