Question 1: Describe the main purpose of an orthographic projection in technical drawing.

Answer: An orthographic projection is used to create accurate 2D representations of a 3D object from different viewing angles, typically front, top, and side views, to communicate shape and dimensions clearly.

Question 2: Imagine a simple cube. Sketch the front view of this cube in orthographic projection.

Answer: A correct front view of a cube is a square shape with equal sides, showing the face directly facing the observer.

Question 3: Describe what the top view of a rectangular box would look like in orthographic drawing.

Answer: The top view would be a rectangle that shows the length and width of the box as seen from above, with the height not visible.

Question 4: Draw the side view of a simple L-shaped bracket in orthographic projection. The L-shape should be clearly visible with the correct proportions.

Answer: A correct side view would show the L-shape as a vertical and horizontal rectangle joined at a corner, with accurate proportions and clear edges.

Question 5: Explain why it is important to include dimensions in orthographic drawings.

Answer: Dimensions provide precise measurements, ensuring the drawing accurately represents the size of the object and can be used for manufacturing or construction.

Question 6: Sketch a simple cylindrical object, such as a can, from the front, top, and side views in orthographic projection.

Answer: The front view should be a rectangle representing the height and diameter, the top view a circle showing the top opening, and the side view similar to the front but may show the profile of the circle. Each view should be aligned correctly.

Question 7: Sketch a design for a small, ergonomic handheld device, showing the front and side views in orthographic projection in the space below.

Answer: A correct sketch would include a smooth, contoured shape with ergonomic features, clearly labeled front and side views, with proper proportions and rounded edges.

Question 8: What is the difference between the front view and the side view in an orthographic drawing?

Answer: The front view shows the object from the front, highlighting height and width, while the side view shows the depth and height, providing a different perspective of the object.

Question 9: Sketch a simple rectangular prism in orthographic projection, showing the front, top, and side views in the space provided.

Answer: The front view should be a rectangle, the top view a rectangle showing length and width, and the side view a rectangle representing depth and height. All views should be aligned properly.

Question 10: Design and sketch a basic keychain in orthographic projection, including the front and side views in the space below.

Answer: A good sketch would show the keychain with a rounded or rectangular shape, possibly with a hole for a keyring, with clear front and side views, accurate proportions, and labeled features.