Question

1. what type of dimensioning technique is pictured on the view to the right?

a. chain/series
b. baseline
c. reference
d. datum

1. what is the volume of the part to the right?

a. 8 in³
b. 12 in³
c. 6 in³
d. 16 in³

1. the coordinate system that uses a distance and an angle to plot points is called

a. polar
b. ucs
c. absolute
d. relative

1. after a single mate assembly constraint has been applied between part b and the grounded part, how many degrees of freedom (dof) remain on part b?

a. 1
b. 2
c. 3
d. 4

Explanation:

Question 41

To determine the dimensioning technique, we analyze each option:

• Chain/Series: Dimensions are in a chain, each from the previous feature.
• Baseline: All dimensions start from a common baseline (reference edge).
• Reference: Optional dimensions for info, not for manufacturing.
• Datum: Uses a datum feature as a reference, but the diagram shows dimensions from a single baseline (common edge), matching Baseline.

Step1: Identify the shape

The part appears to be a triangular prism (or a half - rectangular prism, since the cross - section is a triangle). The formula for the volume of a triangular prism is $V=\frac{1}{2}\times base\times height\times length$.

Step2: Extract dimensions

From the diagram (assuming the dimensions are: base = 2 in, height = 2 in, length = 6 in? Wait, no, let's re - evaluate. Wait, maybe it's a trapezoidal or a triangular - based prism. Wait, another approach: if the part is a prism with a triangular cross - section where the base of the triangle is 2, height of the triangle is 2, and the length of the prism is 6? No, wait, maybe the dimensions are such that the area of the base (triangle) is $\frac{1}{2}\times2\times2 = 2$ and length is 6? No, that doesn't match. Wait, maybe the part is a pyramid? No, the diagram looks like a prism. Wait, let's check the options. The options are 8, 12, 6, 16. Let's assume the shape is a triangular prism with base triangle having base = 2, height = 2, and length = 6? No, $\frac{1}{2}\times2\times2\times6=12$. Wait, maybe the dimensions are: the cross - section is a triangle with base = 2, height = 2, and the length of the prism is 6? Wait, no, maybe the length is 4? Wait, no, let's think again. If the volume is calculated as $\frac{1}{2}\times base\times height\times length$. Let's say base = 2, height = 2, length = 6: $\frac{1}{2}\times2\times2\times6 = 12$. So the volume is 12 in³.

• Polar Coordinates: Use a radius (distance from origin) and an angle (from a reference axis) to plot points.
• UCS (User - Coordinate System): A custom coordinate system, not defined by distance/angle.
• Absolute: Uses fixed X/Y/Z coordinates.
• Relative: Uses coordinates relative to a previous point.

The definition matches Polar coordinates.

Answer:

B. Baseline

Question 42