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M7 Richard > 7.5 > Flashcards

7.5 Flashcards

1
Q

What is the standard for engineers drawings?

A

BS8888

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2
Q

What paper is usually used for engineers drawings?

A

A series

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3
Q

What is a pictorial (isometric) drawing?

A

Mathematical method drawn without perspective drawn at 30 degrees.

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4
Q

What does the title block consist of?

A 
Drawing number
Scale
Title
Dimensional tolerance notes
Sheet of...
Signature 
Section number
Used on
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5
Q

What is a zone on a drawing?

A

Combination of horizontal and vertical coordinates on a drawing.

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6
Q

What is the revision process known as?

A

Raising an issue

Drawing issue increases by 1 digit

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7
Q

What is the complete parts list known as?

A

Bill of Materials

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8
Q

When would a hole include the depth?

A

If it is blind.

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9
Q

How are threaded holes defined?

A

Thick circular line for the crest, thin circular broken line for the root.

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10
Q

How is a counterbore portrayed?

A

2 thick lined circles.

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11
Q

What must be given for a spotface on a drawing?

A

The diameter.

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12
Q

How is a countersink portrayed?

A

2 concentric thick lined circles with details of the hole and angle and diameter of the countersink.

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13
Q

How is surface texture shown?

A

Roughness numbers or micrometers (smaller the number the smoother the surface)

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14
Q

What would 1 roughness number indicate?

A

The maximum roughness (2 numbers would indicate high and low limits)

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15
Q

Is first angle European or American?

A

European (third angle American)

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16
Q

What does an auxiliary view do?

A

Shows true shape of surface drawn at right angles

17
Q

What are detail drawings also knows as?

A

FAB drawings (fabrication)

18
Q

If the word assembly or installation doesn’t appear in the title of a drawing, what is it?

A

A detailed drawing

19
Q

What is the purpose of an assembly drawing?

A

Show the relationship of 2 or more parts.

20
Q

How is assembly defined?

A

A multiple-piece item that can be disassembled into its units parts without destruction.

21
Q

What is a schematic drawing used for?

A

Illustrate a principle of operation.

22
Q

What are schematic drawings ideal for?

A

Troubleshooting

23
Q

What do wire diagrams indicate?

A

Size of wire and type of terminals.

24
Q

What do wiring diagrams not show?

A

Exact image of the circuit (just principle of operation)

25
Q

What is an aperture card?

A

Photograph drawings and store them on a card.

26
Q

What is microfilm?

A

Hundreds of photos stored on one film.

27
Q

What is CAD?

A

Engineering software for design (computer aided design)

M7 Richard (16 decks)

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