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First Year > Sketches, Drawing and Prints and Limits, Fits and Tolerances > Flashcards

Sketches, Drawing and Prints and Limits, Fits and Tolerances Flashcards

1
Q

What are the three (3) types of pictorial drawing?

A
  • Perspective
  • Oblique
  • Isometric
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2
Q

On what is allowance based on?

A

MMC- maximum material condition

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3
Q

Most orthographic drawings show which 3 views?

A
  • Front elevation
  • Top or plan
  • Side elevation
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4
Q

What does ISO stand for?

A

International Standards Organization

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5
Q

The revision block should include?

A
  • A revision Number
  • A Description
  • A Date
  • Approval signatures
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6
Q

An object or visible line is shown as?

A

Thick Dark Lines

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7
Q

At what angle are oblique drawings drawn at?

A

45 degrees

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8
Q

What is a Revision?

A

is a change or correction to the original drawing

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9
Q

With what does leader line terminate with?

A

An Arrow, a dot, or a tilde ~

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10
Q

In pneumatic symbols, what is the difference between single acting cylinder and double acting cylinder?

A

Usually spring symbol and only one port.

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11
Q

What are the two beam shapes that have tapered flanges?

A

“C” and “S” shapes

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12
Q

What is the purpose of a Section Drawing?

A

sectional views are used to show an aspect of an object which is otherwise too complicated to show with conventional top, front and side views

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13
Q

The two types of orthographic projection drawings are?

A
  • First Angle - European

* Third Angle - North American

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14
Q

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

A

Third Angle

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15
Q

Third Angle orthographic projection can be shown by what is called?

A

A Glass box theory

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16
Q

The typical sectional views are?

A
  • Full section
  • Half section
  • Removed section
  • Revolved section
  • Broken-out section
  • Offset section
  • Aligned section
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17
Q

The intentional difference between mating parts at MMC?

A

is allowance

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18
Q

What are the three types of fits?

A
  • Clearance fit
  • Interference fit
  • Transition fit
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19
Q

The variation size of two mating parts from the basic size to the total amount of this permitted variation is called?

A

Tolerance

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20
Q

The kind of tolerance, where the variation is one direction only is called?

A

Unilateral tolerance

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21
Q

The type of tolerance with variation in size that can be in either direction from the basic size is called?

A

Bilateral tolerance

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22
Q

Type of fit when the shaft will always fit into the mating hole at MMC?

A

Clearance fit

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23
Q

When the shaft diameter is larger than the mating hole diameter?

A

Interference fit

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24
Q

When the mating parts may have some clearance or some interference when assembled is called?

A

Transition fit

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25
Q

HRMS

A

Hot Rolled Mild Steel

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26
Q

SS

A

Stainless Steel

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27
Q

MS

A

Mild Steel

28
Q

MST

A

Machine Steel

29
Q

AISI

A

American Iron and Steel Institute

30
Q

ANSI

A

American National Standards Institute

31
Q

CSA

A

Canadian Standard Association

32
Q

SAE

A

Society of Automotive Engineers

33
Q

SI

A

System International

34
Q

ASSY

A

Assembly

35
Q

BC

A

Bolt Circle

36
Q

BCD

A

Bolt Circle Diameter

37
Q

BHC

A

Bolt Hole Circle

38
Q

CLA

A

Centre Line Angle

39
Q

TYP

A

Typical

40
Q

SF

A

Spotface

41
Q

SPEC

A

Specified

42
Q

SQ

A

Square

43
Q

SYM

A

Symmetrical

44
Q

TPF

A

Taper Per Foot

45
Q

TPI

A

Taper Per Inch

46
Q

TR

A

Taper Ratio

47
Q

The arrows on the ends of cutting planes lines are used to?

A

Show direction to view the sections

48
Q

Which two (2) sectional view never require a cutting plane line?

A
  • Broken out

* Removed

49
Q

The six different planes you can draw to view an object are?

A
  • Front
  • Right side
  • Left side
  • Top (plane)
  • Bottom
  • Rear
50
Q

A centre line is shown as?

A

A series of long dashes, separated by short dashes

51
Q

What is the plane projection on which the front view is projected?

A

Front Plane

52
Q

What do break lines do?

A

Break lines allow long symmetrical shapes to be drawn in less space so that the drawing can be drawn to a larger scale for clarity.

53
Q

What is considered to be the key view in all cases of an orthographic projection?

A

Front View

54
Q

What is the plane projection at which the top view is projected?

A

On the horizontal plane

55
Q

When is not necessary to specify the angle of a chamfer?

A

when the chamfer is external and has an angle of 45 degrees

56
Q

What material section line is used for majority of parts?

A

Cast Iron

57
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 three (3) axis and offers less distortion to round objects

58
Q

A Leader Line terminates with?

A
  • Arrows
  • Dots
  • Squiggle
59
Q

Name three (3) of the elements you can use to define a taper

A
  • Large Diameter
  • Small Diameter
  • Length of Taper
60
Q

The range of fits created between the maximum and the minimum dimensions of mating parts is?

A

The Fit Codes

61
Q

What are the factors that affect the signs, and tolerances of mating parts?

A
  • Load
  • Temperature
  • Lubrication
  • Metal Type
62
Q

What are the Break Lines?

A
  • Short Break Line
  • Long Break Line
  • Solid Shaft Break Line
  • Hollow Shaft Break Line
63
Q

The external radius is called?

A

A Round

64
Q

The internal radius is called?

A

Fillet

65
Q

What beam shape has flanges on both sides?

A

W and S shape.

First Year (9 decks)

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