To determine the engagement in inches for a socket allowance for a one-inch pipe, we need to consider the standard measurements for pipe fittings.
Given the multiple choices:
A) [tex]$\frac{3}{32}$[/tex]
B) [tex]$1 \frac{1}{4}$[/tex]
C) [tex]$\frac{15}{16}$[/tex]
D) [tex]$\frac{3}{8}$[/tex]
First, analyze each option:
1. Option A: [tex]$\frac{3}{32}$[/tex]
- This is approximately 0.09375 inches. This value seems very small for a one-inch pipe engagement, which typically requires a more substantial connection depth.
2. Option B: [tex]$1 \frac{1}{4}$[/tex]
- This evaluates to 1.25 inches. This seems excessive for a socket allowance which usually doesn't need to be over an inch.
3. Option C: [tex]$\frac{15}{16}$[/tex]
- This evaluates to approximately 0.9375 inches. This also appears to be slightly large for a typical one-inch pipe fitting engagement.
4. Option D: [tex]$\frac{3}{8}$[/tex]
- This evaluates to approximately 0.375 inches. This seems reasonable as it lies within the usual range for the engagement length of a nominal one-inch pipe fitting.
Based on standard practices, the engagement length for a nominal one-inch pipe fitting typically is around 0.375 inches, which matches option D.
Therefore, the correct answer is:
D) [tex]$\frac{3}{8}$[/tex]