Question 1: Describe the difference between an orthographic projection and an isometric drawing.

Answer: An orthographic projection shows different views of an object (such as front, top, and side) in 2D, each view representing a different angle, with no perspective distortion. An isometric drawing is a 3D representation where the object is tilted so that three sides are visible at equal angles, giving a sense of depth.

Question 2: Explain why orthographic drawings are useful in manufacturing and engineering.

Answer: Orthographic drawings provide precise, scaled views of an object from different angles, allowing manufacturers and engineers to understand the exact shape, dimensions, and features without distortion, facilitating accurate production.

Question 3: Identify three key features that should be included in an orthographic drawing of a simple box.

Answer: Key features include the front view, top view, and side view; all should be scaled accurately with clear lines, and dimensions should be labelled where necessary.

Question 4: Draw a front view of a rectangular box that measures 100mm wide, 50mm high, and 30mm deep. Use a large blank space provided.

Answer: A correct sketch would show a rectangle 100mm wide and 50mm high, representing the front view of the box. The drawing should be proportionate, with the dimensions clearly indicated.

Question 5: Sketch the top view of the same rectangular box described above. Include the shape and approximate dimensions in your drawing.

Answer: A correct sketch would be a rectangle measuring 100mm in width and 30mm in depth, positioned to match the front view, with dimensions indicated.

Question 6: Describe how the side view of the box would look based on the given dimensions.

Answer: The side view would show a rectangle 50mm high and 30mm deep, with the width of 100mm not visible in this view. It should accurately reflect the shape and proportions.

Question 7: Sketch the side view of the rectangular box. Use the blank space provided to demonstrate your understanding of orthographic views.

Answer: A correct sketch would be a vertical rectangle 50mm high and 30mm deep, with clear lines and proportionate dimensions, aligned with the other views.

Question 8: Explain the importance of maintaining consistent scale across all views in an orthographic drawing.

Answer: Maintaining a consistent scale ensures that all views accurately represent the object's proportions, making it easier to interpret and assemble the parts correctly during manufacturing.

Question 9: Identify two common mistakes students make when creating orthographic drawings and suggest how to avoid them.

Answer: Common mistakes include incorrect alignment of views and inconsistent scaling. To avoid these, draw all views using the same scale and ensure that features line up correctly across views.

Question 10: Create an orthographic projection of a simple L-shaped object. Sketch the front, top, and side views, ensuring correct proportions and alignment in the blank spaces provided.

Answer: A correct set of sketches would clearly show the L-shape from each view, with matching edges aligned vertically and horizontally, and dimensions accurately represented.