Question 1: Describe what an orthographic drawing is and explain its purpose in design and engineering.

Answer: An orthographic drawing is a two-dimensional representation of a three-dimensional object from different angles, typically front, side, and top views. Its purpose is to accurately communicate the shape, dimensions, and details of an object for manufacturing or construction.

Question 2: Sketch a simple rectangular box in orthographic projection, showing the front, top, and side views on the provided space.

Answer: A correct sketch should include three separate views: the front view showing the height and width, the top view showing the length and width, and the side view showing the height and depth. All views should be aligned correctly, with consistent dimensions.

Question 3: Draw a side view of a triangular-based prism, ensuring the shape is clear and proportionate.

Answer: A proper sketch would show the triangular face in profile as a triangle, with the length of the prism extending from it. The shape should be proportionate, with straight lines and clear angles.

Question 4: Label the following features on an orthographic drawing of a simple cube: front view, top view, and side view.

Answer: The front view shows the face directly facing the viewer; the top view shows the face above the object; the side view shows the face on the side. All should be rectangles of equal size, aligned properly.

Question 5: Identify and explain the difference between an isometric drawing and an orthographic drawing.

Answer: An orthographic drawing shows different views of an object from the front, top, and side, all in 2D. An isometric drawing is a 3D representation where the object is drawn at an angle, giving a three-dimensional perspective.

Question 6: Sketch the front, top, and side views of a cylindrical object such as a can.

Answer: The front view should show a rectangle with the height of the can; the top view should be a circle representing the open top; the side view should be a rectangle with a semi-circular top indicating the curved surface.

Question 7: Draw a small rectangular box with a lid that opens. Show the front, top, and side views in orthographic projection.

Answer: The front view should show the rectangle with a line indicating the lid's hinge; the top view should be a rectangle with a smaller rectangle inside to show the lid; the side view should display the depth and height, with an indication of the lid opening.

Question 8: Explain why orthographic drawings are important in the manufacturing of everyday objects.

Answer: Orthographic drawings provide precise and clear views of an object, showing all necessary dimensions and features. This helps manufacturers understand exactly how to produce the object accurately.

Question 9: Design and sketch a simple keyring in orthographic views, including the front, top, and side views.

Answer: The front view should show the keyring as a circle or oval; the top view should be a thin rectangle or oval, indicating the thickness; the side view should show the profile of the ring, possibly as a narrow rectangle or semi-circle. All views should be proportionate and aligned.

Question 10: Identify three common mistakes students make when drawing orthographic projections and suggest ways to avoid them.

Answer: Common mistakes include: inconsistent scales between views, misaligned views, and incorrect proportions. To avoid these, use a consistent scale, draw guidelines to align views properly, and check measurements carefully before finalizing.