Question 33 QMED05 - Machinist-Pump Technician

The Correct Answer is B ### 2. Explanation of Why Option B ("2") is Correct Option B (View 2) correctly represents the right side view (RSV) of the object in a third angle projection because it adheres to the fundamental principles of orthographic projection: 1. **Placement:** In third angle projection, the right side view is placed adjacent to and directly to the right of the front view ("F"). 2. **Height Alignment:** The height of the right side view (vertical dimension) must align perfectly and be exactly equal to the height of the front view ("F"). 3. **Depth Alignment:** The width (horizontal dimension) of the right side view represents the object's depth. This depth must align perfectly with the depth shown in the top view ("T"), typically achieved by projecting lines at $45^\circ$ from the top view to the right side view plane. 4. **Feature Representation:** View 2 must accurately display all features visible when looking at the object from the right side. This includes showing any hidden edges or contours (such as holes or internal slots) using dashed hidden lines, and visible edges using continuous solid lines. Assuming the geometry defined by views F and T projects correctly into View 2, View 2 is the only option that maintains the correct dimensional alignment and feature visibility for the right side of the object. ### 3. Explanation of Why the Other Options Are Incorrect **A) 1:** View 1 is incorrect because it likely misrepresents the object's geometry. It may have incorrect depth dimensions (failing to align with the Top View T), incorrect height dimensions (failing to align with the Front View F), or incorrectly depict the internal features (e.g., showing a hidden line where there should be a visible line, or vice versa), meaning it does not correctly project the features defined by F and T. **C) 3:** View 3 is incorrect because it typically represents a view with incorrect features or dimensions. Often, views like "3" might represent the correct features but be placed incorrectly (e.g., positioned for a first angle projection, which would be to the left of the front view), or they might violate the fundamental alignment rules for height and depth established by F and T. **D) 4:** View 4 is incorrect because it depicts a geometry that is inconsistent with the Front View (F) and Top View (T). It might show the object from an entirely different angle (like the left side view or bottom view), or it may show correct features but fail to maintain the dimensional alignment, particularly the depth alignment with the Top View (T).