HelpOpen the tool palette that contains the layout grid 2D tool you want to use, and select the tool.

On the Properties palette, expand Basic, and expand General.For Shape, select Radial.Specify the boundary object attached to the grid, if necessary.More items…•.

## How many types of coordinate systems are there in AutoCAD?

4World Coordinate System (WCS), User Coordinate System (UCS). There is 4 AutoCAD coordinates system you should know. Absolute coordinate system, Relative Rectangular coordinate system, Relative Polar coordinate system and Interactive system(Direct coordinate system).

## What does PCD stand for?

Pitch Circle DiameterThe Pitch Circle Diameter (PCD) is the diameter of the circle which passes through the centre of all the studs, wheel bolts or wheel rim holes. The easiest way calculate the PCD is as follows: 1) Measure the distance ‘S’ between two adjacent studs from the centre of each hole. 2) Calculate from the formula below.

## What is common to freeze and lock options in layers?

If you plan to switch between visible and invisible states frequently, use the On/Off setting. You can freeze layers in all viewports, in the current layout viewport, or in new layout viewports as they are created. Locks and unlocks the layers. You cannot edit objects on a locked layer.

## How do I check my PCD?

The P.C.D. of any wheel or hub with an even number of holes can be measured from the inside of one hole directly across to the outside of the hole opposite. To calculate the P.C.D. of a five stud wheel or hub, measure ‘X’ from the inside of one hole to the outside of the next hole and multiply by 1.7012.

## How do you find the distance of a hole in PCD?

To calculate the division (distance between two nearby holes) of the PCD , multiply the diameter of the pitch circle and the given factor in the table. For instance, If 10 holes to be equally divided in a 100 mm pitch circle then the division, a = dia x 0.309 = 100 x 0.309 = 30.90 mm.

## How do you make an array in CAD?

Create a Polar ArrayClick Home tab Modify panel Polar Array. Find.Select the objects to array.Specify a center point. A preview array is displayed.Enter i (Items) and enter the number of objects to array.Enter a (Angle) and enter the angle to fill. You can also drag the arrow grips to adjust the fill angle.

## What are polar coordinates?

In mathematics, the polar coordinate system is a two-dimensional coordinate system in which each point on a plane is determined by a distance from a reference point and an angle from a reference direction.

Architects and Drafters use AutoCAD to design blueprints for building, bridges, and roads. The house or apartment you are currently living in was most likely designed using CAD software. It gives the designer a tool to draw things to scale.

## Which type of software is AutoCAD?

AutoCAD is a commercial computer-aided design (CAD) and drafting software application. Developed and marketed by Autodesk, AutoCAD was first released in December 1982 as a desktop app running on microcomputers with internal graphics controllers.

## What is the use of polar tracking in AutoCAD?

Polar tracking restricts cursor movement to specified angles. PolarSnap restricts cursor movement to specified increments along a polar angle. When you create or modify objects, you can use polar tracking to display temporary alignment paths defined by the polar angles you specify.

## What is an array in CAD?

The array command in AutoCAD is used to make multiple copies of objects. Although you can use the copy command to duplicate objects, the array command is more flexible and precise. One advantage of using the array command is that it allows you to copy objects in a defined angle and exact number of copies.

John WalkerThe company was founded in 1982 by John Walker, who was a coauthor of the first versions of AutoCAD.

## Why is AutoCAD so expensive?

The cost is because this software is very complex, difficult to develop and maintain, while the customer base is relatively small (not a mass-market/consumer grade product). If you use AutoCAD for your job, then the employer pays the license fee. For software like autoCAD, that’s probably 95% of their licenses.

## How do you polar an array?

Create a Polar ArrayClick Home tab Modify panel Polar Array. Find.Select the objects to array.Specify a center point. A preview array is displayed.Enter i (Items) and enter the number of objects to array.Enter a (Angle) and enter the angle to fill. You can also drag the arrow grips to adjust the fill angle.

## What are different types of arrays in AutoCAD?

There are three types of arrays:Rectangular.Path.Polar.

## What is the formula for calculating PCD?

The length in mm of the pitch circle diameter per tooth.MOD = PCD / N. Number of Teeth. The number of teeth on the gear.N = PCD / MOD. Pitch Circle Diameter. … PCD = N x MOD. Outside Diameter. … OD = (N + 2) x MOD. Center Distance. … CP = pi x MOD. Circular Tooth Thickness. … CTT = CP / 2. Addendum. … A = MOD. Dedendum. … D = H – A. Whole Depth.More items…