Basic Introduction or Principle: We all are aware with the term "Generator". A device which converts mechanical energy into electrical energy is known as generator. This generator makes rotate with the help of some kind of external energy. When this energy extract from the energy of steam, the plant is known as steam power plant. A simple steam plant works on Rankine cycle. In the first step, water is feed into a boiler at a very high pressure by BFP (boiler feed pump). This high pressurized water is heated into a boiler which converts it into high pressurized super heated steam. This high energized steam passes through steam turbine (a mechanical device which converts flow energy of fluid into mechanical energy) and rotate it. Owing to extract full energy of steam, three stage turbines is used which is known as LPT (Low pressure turbine), IPT (intermediate pressure turbine) and HPT (High pressure turbine). The turbine shaft is connected to the generator rot
Polygon:
Short key : POL
Polygon is the shape which has more than two sides and each side is equal length. There are two methods to draw polygon in AutoCAD.
1. With the reference of a circle:
This method is used when we know the radius of the polygon. In this method first draw a circle whose radius is same as the polygon radius and then follow this method.
Select polygon tool from quick access toolbar or by short key POL enter.
Now enter number of sides of the polygon.
After it specified the center point of polygon by clicking the left click of mouse at the center of the circle.
Now press I enter to draw the polygon inside the circle or press C to draw the polygon at circumscribed(outside) to the circle.
Now enter the radius of the polygon.
Now delete the circle.
Example:
Draw a polygon who has eight sides and whose radius is 6.
Solution:
Draw a circle whose radius is 6.
POL enter.
8 enter
Select the center of the circle.
Press I for inside the circle and C for outside the circle.
6 enter
2. With the reference of a line:
This method is used when we know the length of the side of the polygon. In this method first draw a line whose length is same as the side length of the polygon and then follow this method.
Select polygon tool from quick access toolbar or by short key POL enter.
Now enter number of sides of the polygon.
Now press E enter to select the edge option which allow to draw the polygon with reference to side length.
Now select the starting and ending points of line.
Example:
Draw a circle who has 6 sides and each length of each side is 2.
solution:
First draw a line of length 2
POL enter
6 enter
E enter
Select first point of line by clicking the mouse.
Select end point of the line by clinking the mouse.
Exercise:
Problem 1 : Draw a polygon who has 8 side and length of each side is 10.
Problem 2 : Draw the following diagram.
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