Auto CAD MCQ Quiz - Objective Question with Answer for Auto CAD - Download Free PDF

Explanation:

For highly realistic rendering in architectural visualization (like a residential interior), V-Ray is the industry-preferred rendering engine.

• V-Ray Lights simulate real-world lighting behavior far better than basic lights.

• GI (Global Illumination) allows for indirect light bouncing, making shadows softer and lighting more natural.

• This combination produces photorealistic images with accurate shadows, reflections, and ambient light distribution.

Used extensively in:

• Interior design visualizations

• Product renderings

• Architectural walk-throughs

Explanation:

In Autodesk 3ds Max, the Command Panel is the main area for creating and modifying objects.
The Modify tab (second tab in the Command Panel) allows users to:

• Adjust parameters like length, width, radius, segments, etc.

• Apply modifiers like Bend, Taper, Shell, etc.

• View and assign material IDs and map coordinates.

• Interact directly with a selected object’s geometry and properties.

This makes the Modify tab the core workspace for object-level editing.

Explanation:

In AutoCAD drafting for architectural plans, each building element (wall, text, dimension, etc.) is typically assigned to a specific layer to ensure clarity, readability, and standardized plotting.

• Walls are a primary structural component, and must be easily distinguishable from other elements.

• Industry practices assign them to a "Wall" layer, usually plotted with:

  • Continuous linetype (solid visible lines),

  • Higher lineweight (e.g., 0.35 mm or above) to make them visually prominent in the drawing,

  • A consistent color (e.g., color 7 or black) for plotting.

This ensures that walls stand out clearly in floor plans and are not confused with dimensions, text, or other annotations.

Explanation:

In elevation views of buildings, windows and doors are represented as rectangular shapes positioned within the walls.

• The RECTANGLE command in AutoCAD is:

  • Fast and efficient for drawing 2D shapes like windows and door outlines.

  • Allows easy input of exact dimensions (length × height).

  • Keeps all corners connected, avoiding broken lines or misalignment.

  • Simplifies modifications and copying.

Thus, RECTANGLE is the most suitable command for quickly drawing vertical elements in elevations with precision.

Explanation:

CAD (Computer Aided Design):

• CAD is the use of computers to aid in the creation, modification, analysis, or optimization of a design.
• A CAD drawing is a detailed 2D or 3D illustration displaying the components of an engineering or architectural project.
• CAD utilizes software to create drawings to be used throughout the entire process of a design project, from conceptual design to construction or assembly.

The following list of file extensions related to AutoCAD:

1. Diameter Symbol (∅) - %%C
2. Degree Symbol (°) - %%D 
3. Plus/Minus Symbol (±) - %%P
4. Underline (single character) - %%u followed by the character that needs to be underlined (e.g., %%uA)
5. Overline (single character) - %%o followed by the character that needs to have an overline (e.g., %%oA
6. Fraction Slash - %%/ (Use in combination with numbers and the stack command to create fractions, e.g., 1/2 with stack command becomes a fractional representation.)
7. Center Line Symbol  - Set font to "gdt" and type lowercase q
8. Unicode Characters - Use \U+ followed by the Unicode value (e.g., \U+2205 for the empty set symbol ∅, though not all AutoCAD versions may support this directly for every symbol.)
9. Section Symbol (§) - This doesn’t have a direct shortcut in AutoCAD text, but can be inserted via other means such as using Windows Character Map or typing the Unicode character code in certain contexts.
10. Phi/Greek Letters - While there isn't a direct "%%" code for all Greek letters such as Phi, you can use the MTEXT editor and choose symbols to insert various Greek letters,

Explanation:

1. OSNAP TRACKING - While not really an Object Snap, this option allows you to pick any point on the screen and track from there. This point can be on an object or not.
2. FROM - This option allows you to select an Osnap and use it as a reference point. Very similar to Temporary Tracking.
3. ENDPOINT – This snap is used to get to the exact endpoint of a line, arc or other object that has a definite ending to it. This should be used for joining lines, and dimensioning. In general, you would want this on as a running Osnap in your drawing. The endpoint Osnap is indicated by a small square.
4. MIDPOINT – This is used to find the exact middle of any object that has a beginning and an end. All lines and arcs have a midpoint. (Circle have a center, not a midpoint.) This is also a good Osnap to have in running mode. The midpoint Osnap is indicated by a small triangle.
5. CENTER – The center Osnap is used to find the exact center of circles, arc and ellipses. This is also a good Osnap to leave in running mode. To pick the center point, you have to select the object itself, and not an area in the middle of the object. The center Osnap is indicated by a small circle.
6. GEOMETRIC CENTER – This is a new Osnap that is really handy. Use it when you need to snap to the 'geometric' center of a rectangle rather than trying to find the two midpoints. Works on closed polylines, rectangles, splines
7. NODE – Nodes are points. The are created using the point command. They are also created when an object is divided. A node Osnap is indicated by a circle with angled crosshairs in side.

Explanation:

CAD (Computer Aided Design):

• CAD is the use of computers to aid in the creation, modification, analysis, or optimization of a design.
• A CAD drawing is a detailed 2D or 3D illustration displaying the components of an engineering or architectural project.
• CAD utilizes software to create drawings to be used throughout the entire process of a design project, from conceptual design to construction or assembly.

The following list of file extensions related to AutoCAD:

Explanation:

CAD/CAM

• CAD stands for Computer-Aided Design whereas CAM is the abbreviation for Computer-Aided Manufacturing.
• CAD/CAM applications are used to both design a product and programme manufacturing processes, specifically, CNC machining.
• CAD and CAM can be set up to create a direct link between the design and manufacture of a product. The drawing geometry is then used in the CAM program to generate instructions for the CNC machine tools employing stamping, cutting, burning, bending and other types of operations.

Hardware devices which are used in CAD/CAM application:

Cursor control devices:

• Absolute touchpad
• Thumbwheels
• Mouse
• Trackball
• Light pen
• Relative touchpad
• Displacement joystick
• Force joystick

Explanation:

A cylinder can be considered both 2D and 3D depending on the context.

A 2D representation of a cylinder is a circle or a rectangle in a technical drawing, while its 3D counterpart includes height, allowing it to occupy space.

A square is strictly a 2D shape, while a prism and pyramid are inherently 3D.

Explanation:

CRT (Cathode Ray Tube)

• CRT monitors were traditionally used in CAD systems because they offered high resolution and color accuracy, which are important for detailed design work. Although LCD and LED monitors are now more commonly used, CRTs were once the standard in professional CAD environments.

1. Diameter Symbol (∅) - %%C
2. Degree Symbol (°) - %%D 
3. Plus/Minus Symbol (±) - %%P
4. Underline (single character) - %%u followed by the character that needs to be underlined (e.g., %%uA)
5. Overline (single character) - %%o followed by the character that needs to have an overline (e.g., %%oA
6. Fraction Slash - %%/ (Use in combination with numbers and the stack command to create fractions, e.g., 1/2 with stack command becomes a fractional representation.)
7. Center Line Symbol  - Set font to "gdt" and type lowercase q
8. Unicode Characters - Use \U+ followed by the Unicode value (e.g., \U+2205 for the empty set symbol ∅, though not all AutoCAD versions may support this directly for every symbol.)
9. Section Symbol (§) - This doesn’t have a direct shortcut in AutoCAD text, but can be inserted via other means such as using Windows Character Map or typing the Unicode character code in certain contexts.
10. Phi/Greek Letters - While there isn't a direct "%%" code for all Greek letters such as Phi, you can use the MTEXT editor and choose symbols to insert various Greek letters,

Concepts:

The commands that create a 3D solid are listed:

• Box: Creates a solid box or cube cone.
• Cone: Creates a solid cone with a circular or elliptical base
• Cylinder: Creates a solid cone with a circular or elliptical base
• Pyramid: Creates a solid right pyramid with any number of sides
• Sphere: Creates a solid sphere

The commands that convert 2D shapes into 3D solid are listed:

• Extrude: Converts a 2D object such as a circle or planar surface to a solid by adding a Z dimension.
• Loft: Create a solid using a series of 2D cross-sections (curves or lines) that define the shape.
• Revolve: Converts a 2D object such as a circle or planar surface to a solid by revolving the shape about an axis.
• Sweep: Creates a solid by sweeping a closed planar profile along an open or closed 2D or 3D path

Explanation:

Fillet:

• The Fillet command is used to create a rounded corner between two lines or curves.
• It allows you to specify a radius or distance for the fillet, which determines the size of the curve at the corner.

Additional Information

Chamfering:

• The Chamfer command is used to create a beveled corner by removing a portion of the original geometry. It involves cutting off the corner at an angle, typically specified by two distances or an angle and a distance.

Trim:

• The Trim command is used to remove unwanted portions of lines, curves, or other objects that intersect with a cutting edge or boundary.
• It allows you to trim away excess geometry and create desired corners.

Break:

• The Break command is used to break a line or curve into two separate entities at a specified point.
• It does not specifically create a corner in a circular shape but can be used to modify the geometry to create desired corners.

Explanation:

Center Axis:

• In technical drawing or CAD, a center axis is often denoted by a line with a long section, short dash, and another long section.
• This representation indicates the axis of symmetry or the centerline of a symmetrical object or feature.
• It helps to identify the central reference line for objects such as circles, cylinders, or symmetrical components.

Additional Information

AutoCAD does provide the following array types:

Rectangular:

• This array type creates copies of objects in a rectangular pattern based on specified rows, columns, and spacing.

Polar:

• This array type creates copies of objects in a circular pattern around a specified center point.

Path:

• This array type allows for distributing copies of objects along a specified path.