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Print Reading > Sketches, Drawings & Prints - Part A > Flashcards

Sketches, Drawings & Prints - Part A Flashcards

1
Q

What is the key view in orthographic projection?

A

Front View

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2
Q

Many orthographic drawings show only the:

A

Front, Top, and Right side views

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3
Q

What angle of view is the method widely used to draw an orthographic print?

A

3rd Angle orthographic projection

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4
Q

What are 3 types of pictorial drawings?

A

1) Perspective
2) Oblique
3) Isometric

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5
Q

Why is the isometric type of drawing preferred for the mechanical trades?

A

Because it allows you to measure all dimensions parallel to the 3 axes and offers less distortion to round objects.

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6
Q

An object or visible line is shown as…

A

A thick, dark line

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7
Q

A centre line is shown as…

A

A series of long dashes, separated by short dashes.

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8
Q

A leader line terminates with a….

A

an arrow, dot or squiggle

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9
Q

Define: CNTRS

A

Centres

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10
Q

Define: TYP

A

Typical

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11
Q

Define: CBORE

A

Counterbore

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12
Q

Define: CH

A

Chamfer

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13
Q

Define: CLA

A

Centre Line Angle

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14
Q

What are the 6 different planes you can draw to view an object?

A

1) Front
2) Right Side
3) Left Side
4) Top
5) Bottom
6) Rear

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15
Q

In the ISO symbol for 3rd Angle projection, the “cone” is on the ______ side of the crosshairs?

A

Right

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16
Q

Define: Object of Visible line

A

This is the most important line on a blueprint or sketch, as it shows the shape of the object and therefore should be a thick, dark line. The object should stand out on a drawing and should be easy to see.

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17
Q

Define: Centre Line

A

A centre line is used to show the centre of objects or features. Sometimes it is used to show that a part is symmetrical. A centre line is a thin, broken line made up of alternating long and short dashes.

18
Q

Define: Hidden Line

A

Some features of an object are hidden from view. To show these features, a hidden line is used. This line is made up of a series of medium dark short dashes. Although this line is used to better understand the drawing, you should take care not to overuse it. Too many lines can confuse the blueprint reader, so other methods of illustrating hidden features should be used.

19
Q

Define: Dimension Line

A

As this line suggests, it is used for the placement of dimensions. A dimension line is a thin line with an arrow on each end to indicate the distance being dimensioned

20
Q

Define: Extension Line

A

Extension lines are used in conjunction with dimension lines. They are usually in pairs that extend from, but do not touch, the feature of an object. These lines then signify the distance that is being dimensioned.

21
Q

Define: Leader Line

A

This line is used to lead you from information or a dimension to a particular area. A leader line is thin and terminates with an arrow, dot or tilde (~).

22
Q

Define: Cutting Plane or Viewing Plane Line

A

These are thick, dark lines, either broken or continuous, with arrows at right angles on each end. The cutting plane line is used to signify where a sectional view was taken from. . A viewing plane line shows where a particular view originates.

23
Q

Define: Phantom Line

A

This type of line is not usually found on a detail drawing. It is used to show a mating part, assembly or movement of an object. A phantom line is a thin broken line made up of a long dash followed by two short dashes.

24
Q

To avoid varying lettering styles, the standard has been fixed as one basic type, which is…

A

Upper Case Gothic

25
Q

An internal radius called a __________ increases the work piece’s __________.

A

Fillet

Strength

26
Q

An external radius called a _________ aids in _________.

A

Round

Safety

27
Q

Define: Counterbores (CBORE)

A

A counterbore is a hole that has been enlarged for a portion of its depth after the hole has been machined, usually to accommodate the head of a screw or bolt.

28
Q

Define: Spotface (SFACE)

A

A spotface is similar to a counterbore, but it has no specific depth. Its main function is to provide a flat seat for the head of a bolt of washer.

29
Q

Define: Chamfer (CH or CHAM)

A

A chamfer is a slight angle machined between two perpendicular surfaces to relieve a sharp edge.

30
Q

A keyway is no bigger than _____ of the diameter of the shaft.

A

1/4

31
Q

Three types of thread representation are:

A

1) Simplified
2) Schematic
3) Pictorial

32
Q

Comparing 9H to HB pencils, which has the harder lead?

A

9H

33
Q

A chamfer is always cut at a 45 degree angle. (T/F)

A

False

34
Q

Chamfers are never measured along the angular surface. (T/F)

A

True

35
Q

Where do you place the title block on a drawing?

A

Lower right hand corner of the drawing.

36
Q

Rounding off by cutting away the inside or outside corner of an object is called?

A

Chamfering

37
Q

A scale of 1:1 may also be referred to as:

A

Full Scale

38
Q

Which type of shaft key has a semicircular shape and fits into a semicircular keyseat in the shaft and a rectangular keyway in the hub?

A

Woodruff Key

39
Q

In a thread callout M10x1.5x25, the 25 represents the _________ of the thread.

A

Length

40
Q

.875 - 9 UNC - 2B the .875 specifies the _________ of the threaded hole.

A

Diameter

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