# Machine Drawing Questions and Answers – UCS and UCSICON

This set of Machine Drawing Multiple Choice Questions & Answers (MCQs) focuses on “UCS and UCSICON”.

1. The abbreviation WCS stands for _________
a) Windows Coordinate System
b) Wide Coordinate system
c) World Coordinate System

Explanation: 3-dimensional coordinate system with X, Y and Z axes considered up to infinity is termed as WCS. WCS is an abbreviation of World Coordinate System. Icon of WCS is shown at the lower left corner of drawing area.

2. Which type of coordinate system is used in AutoCAD?
a) 2-Dimensional
b) 3-Dimensional
c) 1-Dimensional
d) User dependent

Explanation: Coordinate system is used in AutoCAD is a 3-Dimensional coordinate system. The axes of this coordinate system are considered up to infinity. This coordinate system is termed as the World Coordinate System.

3. Origin of User Coordinate System ___________
a) must coincide with WCS
b) at the left lower corner of drawing area
c) at the center of drawing area
d) can be anywhere in the WCS

Explanation: Origin of UCS can be anywhere in the WCS. It may or may not coincide with WCS. It can be moved/shifted anywhere in the drawing area.

4. When working with User Coordinate System display of square of an icon can be put ON or OFF using ____________
a) UCSICON command
b) UCS command
c) Double click on axes
d) VIEW command

Explanation: When working with User Coordinate System, square of an icon is not displayed. It can be put ON or OFF using UCSICON command. That command further prompts for options.

5. When you see a small square at the intersection of two axes of the coordinate system, you are working with UCS.
a) True
b) False

Explanation: When you see a small square at the intersection of two axes of the coordinate system, you are working with WCS. If there is no box/square at the intersection then you are using UCS. Square or box is the indication of type of coordinate system.
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6. UCS icon is displayed using a line width of _________ by default.
a) 5 pixel
b) 1 pixel
c) 3 pixel
d) 4 pixel

Explanation: UCS icon is displayed using a line width of 1 pixel, by default. User can change these widths of line. A user can beef it to 2 or 3 pixel widths.

7. The position and orientation of the UCS origin is controlled by ________
a) UCS command
b) UCSICON command
c) VIEW command
d) MOVE command

Explanation: Position and orientation of the origin are user coordinate system is controlled by UCS command. VIEW command is used to display the view dialogue box only. MOVE is the command used to move a drawing from one place to another.

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