why we made drawings in 1st and 3rd angle projection not in
2nd and 4th angle?
- 6 Answers
- 37599 Views
- NIN, I also Faced
- E-Mail Answers
Answer Posted / yogendra j. rane (j.t.mahajan
Consider +Y as +VP
-Y as -VP
+X as +HP
-X as -HP
First up of all clear your concept of projection method.
In simple words:
We will unable to see projections from the horizontal plane
hence we need to rotate that plane to get projections
visible (which results as +VP or -VP plane).
I am talking abaout 1st angle methos. Let you are watching
object from your right side, then you will get F.V. in
front side of +VP plane so it will be visible to you.
But you will get T.V above HP plane and which is need to be
rotated by 90 deg.
Now consider if you rotate +HP plane to anticlockwise the
projection will go to back side of +VP plane and you will
not be able to see them, but if you rotate it clockwise it
will be in the front side of -VP plane which is in front of
viwer.
Try this basic logic/method to every quadrant/angle, you
will get ans to your question.
| Is This Answer Correct ? | 10 Yes | 2 No |
Post New Answer View All Answers
What are four types of turbine seals?
What is a radial-flow turbine?
How does an equal-arm balance work?
why does polytropic efficiency of a compressor decrease with increasing flow rate ?
As compression ratio increases, thermal n increases. How is thermal n affected by weak and rich mixture strength ?
Explain the difference between grey iron and white iron. What is mottled iron ?
how to select the capacity of an exhaust blower( exhaust booth) in an automobile industry.
What is defrence between relaction & refraction?
What are the thermal conductivity properties of brass?
What is the difference between Michell type bearing and anti friction bearing and the application.
What will happen if head of a selected pump is not utilized in a closed loop water circuit? Flow will increase or decrease or remain same?
What is vane diagram in centrifugal pump?
Fire Engine should be stopped in auto mode or not. If stopped then why and if not then why not?
I have purchased some circlips @rs 100/- p pc on 01.01.2017 ans some @rs.120/- p pc/@rs.90/- p pc dt. 31.03.2017 what is the ending price of per pcs
My parents green card holder and sister is citizen so... . I m applying for spring 2010 for F1 visa... how can i convince visa officers for visa?
