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Total questions: 39
Worksheet time: 20mins
What is the thickness of thick
lines compared to thin lines?
Twice the width of thin lines
The same thickness
Half the width of thin lines
Three times the width of thin lines
What is the width of thin lines?
0.5mm
0.7mm
0.3mm
1.0mm
Which of the following is NOT a common line thickness used in technical drawings?
0.18 mm
0.50 mm
1.20 mm
2.50 mm
What is the purpose of hidden lines?
To indicate visible edges
To show edges that are not directly visible
To represent stitching or phantom details
To mark cutting planes
Why must all lines except construction lines be sharp and dark?
To ensure better printing quality
To reduce confusion in drawings
To make them stand out clearly
All of the above
What is the purpose of phantom lines?
To show alternate positions of moving parts
To indicate symmetry
To mark cutting planes
To highlight dimensions
How are short break and long break lines different?
Short break lines are straight, while long break lines are wavy
Short break lines are used for smaller interruptions, while long break lines show larger interruptions
Both a and b
There is no difference
What is the standard height of lettering in technical drawings?
6mm
10mm
13mm
20mm
If a dimension is placed in a hatched area, what should be done?
Shade it darker
Leave an opening
Move it to another section
Erase hatching
How high are fractions typically written in technical lettering?
4mm
6mm
8mm
10mm
What is bilateral tolerance ?
Tolerance applied equally above and below a dimension
The minimum possible tolerance allowed
Tolerance applies only in one direction
All of the above
What are the dimensions of a basic sheet size in both inches and millimeters?
8.5” x11” or 210 mm x 297 mm
9” x 12” or 250 mm x 300 mm
11” x 17” or 297 mm x 420 mm
7.5” x 10” or 200 mm x 275 mm
In the equation 10.5 = 2A + W + Sp + D, what does W represent?
Width of the sheet
Width of a letter
Width of a line
Width of a block
In layout calculations, what does #Blocks represent?
The number of individual sections on a sheet
The number of different lettering styles
The number of dimension lines
The number of views in a drawing
Which of the following is NOT one of the three aspects of good dimensioning?
Technique of dimensioning
Placements of dimensions
Choice of dimensions
Drawing size
What should NOT be crossed when placing dimension lines?
Extension lines
Hidden lines
Object lines
Extension and dimension lines
What is a leader used for in technical drawings?
To indicate hidden edges
To direct attention to a note or dimension
To divide different sections of a drawing
To represent stitching lines
Which of the following is NOT a common unit of dimensioning?
Millimeters
Meters
Kilometers
Inches
How are angular tolerances typically given?
In terms of degrees, minutes, and seconds
In millimeters
In inches
As a percentage
What is a limit tolerance for angles?
The minimum and maximum allowable angular deviation
The maximum thickness of a material
The range of acceptable curve radius
The difference between two lines
What does bilateral tolerance mean?
Tolerance applied to only one side of a dimension
Tolerance applied equally to both positive and negative deviations
A tolerance that applies to different units
Dimensionless
In technical drawings, which symbol represents degrees in angular measurements?
“
~
‘
°
Why should dimensions be placed on a view?
To make the drawing look neat
To promote clarity
To fill Up empty spaces
To match other drawings
What is an example of unilateral tolerance?
1.625 ± 0.002
1.500 ± 0.001
1.879 +0.05
1.750 ± 0.004
What is bilateral tolerance ?
Tolerance only applies in one direction
Tolerance applied equally above and below dimension
Minimum
All of the above
What should be done when a metric number is a whole number?
Do not use a decimal or a zero
Use a decimal and a zero
Write it as a fraction
Round it to the nearest tenth
If the number following the rounding position is exactly 5, what should be done?
Always round up
Always round down
Round to an even number
Ignore the number
How many principal views are there in orthographic projection?
4
6
3
5
In third-angle projection, where is the object drawn?
Above the horizontal plane
In front of the vertical plane
Below the horizontal plane and behind the vertical plane
To the left of the front view
Which symbol represents a counterbore?
^ - but upside down
ø
<
[ - but flat side down
What does the symbol “ Ø “ represent
Radius
Square
Diameter
Depth
What are hidden lines used for?
To show features blocked from view
To represent the center of a hole
To indicate the thickness of an object
To mark reference dimensions
What do centerlines indicate?
The edges of an object
The axis of symmetry for a feature
The maximum allowable tolerance
The boundary of an object
What should be the primary consideration when selecting a front view?
The view with the least number of lines
The view that shows the objects shape most clearly
The view with the smallest dimensions
The most symmetrical view
When should a single view be used?
Always, to simplify the drawing
For objects with uniform thickness
Only for cylindrical objects
When hidden lines are not required
Which projection system is commonly used in the United States?
Third isometric projection angle
First angle projection
Third -Angle projection
Perspective projection
In first-angle projection, where is the right-side view placed?
To the right of the front view
To the left of the front view
Below the front view
Above the front view
If the number after the rounding position is less than 5, what should be done?
Always round up
Round to an odd number
Add a zero
No changes should be made
How should 4.35 be rounded if rounding to one decimal place?
4.3
4.4
4.5
4.2
