New Mexico State License Pipe Fitter Practice Test

Question: 1 / 400

For a 30 degree offset system with a travel length of 20 inches, what are its run and offset?

15 inches run and 5 inches offset

17 5/16 inches run and 10 inches offset

In a 30-degree offset system, the calculations for the run and offset are based on right triangle principles derived from the angles created by the offset. The travel length refers to the distance along the diagonal of the offset, which is crucial for determining both the run (horizontal distance) and the offset (vertical distance).

Using trigonometric functions, specifically sine and cosine, we can break down the 30-degree angle. The cosine of the angle helps us determine the run, while the sine helps us determine the offset. For a 30-degree angle:

- The run can be calculated using the cosine function:

\[ \text{Run} = \text{Travel Length} \times \cos(30^\circ) \]

- The offset can be found using the sine function:

\[ \text{Offset} = \text{Travel Length} \times \sin(30^\circ) \]

Plugging in 20 inches for the travel length:

1. Calculating the run:

\[

\text{Run} = 20 \times \cos(30^\circ) \approx 20 \times 0.866 = 17.32 \text{ inches}

\]

2

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20 inches run and 5 inches offset

18 inches run and 8 inches offset

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