City Guilds Model Questions Vol1 2020 Engineering Question 1

Practice practical question 1 from the 2020 City Guilds Model Questions Vol1 Engineering examination. This question covers Young's modulus, Stress‑strain relationship, Error propagation .

City Guilds Model Questions Vol1 2020 Engineering Practical

Topics: Young's modulus Stress‑strain relationship Error propagation

Question 1 CITY_GUILDS_MODEL_QUESTIONS_VOL1 • 2020 • ENGINEERING • practical

A steel rod of unknown Young's modulus is fixed vertically in a laboratory rig. Its initial length is measured as 0.500 m (to the nearest 0.001 m). A series of axial loads are applied and the corresponding extensions recorded: Load (N): 500, 1000, 1500, 2000 Extension (mm): 0.24, 0.49, 0.73, 0.98 The cross‑sectional area of the rod is 20 mm² (to the nearest 1 mm²).

Question Parts

( a )

Plot load against extension and determine the gradient (ΔLoad/ΔExtension).

( b )

Using the gradient, calculate Young's modulus of the steel rod.

( c )

Estimate the percentage uncertainty in the calculated Young's modulus, considering uncertainties: length ±0.001 m, area ±1 mm², each extension reading ±0.01 mm, and each load reading ±5 N.

Detailed Solution & Marking Scheme

Get the step-by-step solution, key points required by examiners and detailed marking guidance through the Edcrib AI Tutor.

Reveal Answer

About This Question

This is City Guilds Model Questions Vol1 2020 Engineering Question 1. It is one of the practical questions from the 2020 City Guilds Model Questions Vol1 Engineering examination.

The question covers Young's modulus, Stress‑strain relationship, Error propagation .

View More City Guilds Model Questions Vol1 2020 Engineering Questions More City Guilds Model Questions Vol1 Practice Questions Back to Questions

Master the Exam!

You've seen a preview, but there are thousands more questions plus AI tutor to break down complex solutions.

Unlock Full Access Available for Android & Windows

Chat with Support