City Guilds Model Questions Vol1 2021 Engineering Question 1

Practice practical question 1 from the 2021 City Guilds Model Questions Vol1 Engineering examination. This question covers Moment of inertia, Measurement techniques .

City Guilds Model Questions Vol1 2021 Engineering Practical
Topics: Moment of inertia Measurement techniques
Question 1 CITY_GUILDS_MODEL_QUESTIONS_VOL1 • 2021 • ENGINEERING • practical

A steel rectangular bar is to be used as a supporting beam. The bar is 200 mm long. Its cross‑section is approximately rectangular but the actual width (b) and height (h) vary slightly along the length. The following measurements of width (in mm) and height (in mm) were taken at five equally spaced points along the bar:

Question Parts

( a )
Determine the mean width \(\overline{b}\) and mean height \(\overline{h}\) of the bar.
( b )
Using the mean dimensions, calculate the second moment of area \(I\) of the bar about its neutral axis (use \(I = \frac{\overline{b}\,\overline{h}^{3}}{12}\)). Express your answer in \(\text{mm}^{4}\).
( c )
State two possible sources of experimental error in the measurement process and suggest one method to reduce each error.

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About This Question

This is City Guilds Model Questions Vol1 2021 Engineering Question 1. It is one of the practical questions from the 2021 City Guilds Model Questions Vol1 Engineering examination.

The question covers Moment of inertia, Measurement techniques .

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