3. Target of Lesson
Student can know standard angle blocks
to draw engineering
Student can draw perspective, projection,
view and cross section
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4. Recognizes Device To Draw
Engineering
Drawing Paper
Drawing Paper Size
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5. Recognizes Device To Draw
Pencil & Pen
Pencil
Rapido
Engineering
Pencil
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10. Standardization of Engineering
Drawing
Standardization of Letter and Numeral
Explains.
Same .
Technical Letter and drawing number always becomes way
to show the engineering drawing purposes and objectives
clearly its..
Technical Letter and drawing number also becomes
decoration for drawing the engineering. On that account
position of drawing and also letter and number need to be
arranged in such a manner so that easy to read.
the Letter and number can be erect or oblique
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11. Standardization of Engineering Drawing
Standardization of Drawing Line
Drawing Line: To make ridge from form of a substance in
drawing
Mirage Line: In the form of dash line with thickness of line
1/2 ordinary line weightses. Applied to make ridge
something substance that is is not seen direct by ocular.
Liver Line: In the form of line “ stripe, point, stripe, point “
with thickness of line 1/2 ordinary lines. Applied to show
axis a substance drawn.
Scale Line: In the form of trim lines with thickness of 1 / 2
from ordinary line weights.
Secant: This line in the form of line “ strip,titik,titik,strip”
with thickness of 1/2 ordinary line weightses.
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14. Standardization of Engineering
Drawing
Squeezing lines
If when two lines or more different of its(the type
squeezs, hence its the depiction must be executed
as according to priority like following).
Drawing line ( Thick line joints, type A)
Line is not seen ( line incises medium, type D)
Secant ( line is having point, which dipertebal its(the
noses and place of direction transformations, type F)
Axis lines ( line is having point, type E)
Line assists, measure line and hachures line ( trim
lines joints, type B).
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15. Standardization of Engineering
Drawing
Level of diminution
At usage of format DIN, level of diminution to the
next DIN format with photocopy is 70,7%, for
example from DIN A3 becomes DIN A4.
Level of enlargement
For enlargement from format DIN to format DIN
which is the next larger ones, applied level of
enlargement 141,4%, for example from DIN A4
becomes DIN A3. this Diminution and also
enlargement arranged automatically at copier.
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16. Standardization of Engineering
Drawing
Line width
Eligible line width, so that at diminution or
enlargement, normal line width wanted able to
emerge.
Wide in set of mm.
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17. Standardization of Engineering
Drawing
Writes high
Writes high also can be written, so that if
minimized or enlarged able to be adapted for which
we to wish.
Height in set of mm.
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31. Cross Section Drawing
Substances which may not be cut
Cross Section of Solid Radius
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32. Cross Section Drawing
Substances which may not be cut
Cross section of bushing
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33. Cross Section Drawing
Cross section type
Full cross section Half cross section
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34. Cross Section Drawing
Cross section type
Cross Section Partly
Cross Section of Rotary
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35. Cross Section Drawing
Cross section type
Cross Section Branchs or Jumping
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36. Electrical Symbol
NO SYMBOL NAME
1. Wire
2. Connection
3. Not Connection
4. CONNECTOR
5. Switch
6. Switch
7. CONTACT BREAKER
NO SYMBOL NAME
8. FUSE
9. SPARK PLUG
10. GROUND
11. IGNITION COIL
12. BULB
13. RESISTANCE
_ + _ + _ +
14. BATTERY
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37. Electrical Symbol
NO SYMBOL NAME
_ + _ + _ + _ +
15. BATTERY
16. DIODA / RECTIFIER
17. ZENNER DIODA =
TRANSISTOR :
TYPE: - A: PNP
- B: NPN
NO SYMBOL NAME
CONDENSATOR TYPE :
-A:NON PLRITAS
-B:BER PLRITAS
23.
24. HORN
13. MOTOR
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19.
SCR = SILICON
CONTROL
RECTIFIER
18.
VOLT METER
23.
24. AMPERE METER
A B
M
V
A
The platinum-rhodium catalyst provides a surface on which NO decomposes. The catalyst surface is large because it coats the surface of a honeycomb structure seen in the cutaway view of a catalytic converter.
Catalytic converters are required on all new cars manufactured in the United States. A converter transforms carbon monoxide to carbon dioxide, nitric oxide to nitrogen and oxygen, and unburned hydrocarbons to carbon dioxide and water by reaction with oxygen. Platinum, palladium, and rhodium catalysts permit these reactions to occur in less than a second.