Question 1: Describe the key differences between a front view and a top view in an orthographic projection.

Answer: The front view shows the object's height and width as seen directly from the front, while the top view displays the width and depth as seen from above. The front view usually shows the most characteristic features, whereas the top view provides additional spatial details.

Question 2: Sketch a simple box-shaped object with a rectangular cut-out on the front face. Use orthographic views to represent this object from the front, top, and side perspectives.

Answer: A correct set of orthographic views would show: the front view with the box outline and the rectangular cut-out; the top view showing the shape of the box with the cut-out's position; and the side view displaying the depth of the box and the cut-out's side profile.

Question 3: Explain why orthographic drawings are important in product design.

Answer: Orthographic drawings provide accurate, detailed representations of an object from multiple viewpoints, allowing designers, manufacturers, and clients to understand precise dimensions, features, and spatial relationships, which is essential for accurate manufacturing.

Question 4: Draw a simple L-shaped bracket in orthographic projection. Include the front, top, and side views in your sketch.

Answer: The front view should show the L-shape with a vertical and horizontal arm; the top view should show the outline of the horizontal arm and the position of the vertical arm; the side view should reveal the depth of the arms and the L-shape profile.

Question 5: Identify three common symbols or conventions used in orthographic drawings and explain their purpose.

Answer: 1. Hidden lines (dashed lines) to represent features not visible in a particular view; 2. Center lines (long and short dashed lines) to indicate axes or symmetry; 3. Section lines to show cut surfaces in sectional views.

Question 6: Sketch a cylindrical object, such as a pipe, in orthographic views. Show the front, top, and side views clearly.

Answer: The front view should display the height and the circular face; the top view should show the circular cross-section as a circle; the side view should mirror the front's shape and dimensions, illustrating the circular profile.

Question 7: Describe the purpose of using multiple views in orthographic drawing instead of a single perspective sketch.

Answer: Multiple views provide precise and unambiguous information about an object's dimensions and features from different angles, ensuring accurate understanding and manufacturing, which a single perspective cannot reliably convey.

Question 8: Draw the plan (top view) of a rectangular table with four legs, each leg positioned at the corners. Indicate the table's length and width in your sketch.

Answer: The plan should show a rectangle representing the tabletop with four small circles or squares at each corner to indicate the legs. The length and width should be marked clearly.

Question 9: Sketch a small cube with one corner beveled (cut at an angle). Provide the three orthographic views (front, top, side).

Answer: The views should illustrate the cube with a beveled corner: the front view shows the cube with a cut at the corner; the top view displays the square with a diagonal cut; the side view should show the beveled edge, indicating the angled cut's position.

Question 10: What are the limitations of orthographic drawings? Provide two points.

Answer: They can be complex to interpret for intricate shapes, and they do not provide realistic visualizations like perspective drawings, making it difficult to understand how the object appears in real life.