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Question 1
A cylindrical steel bar with an initial cross-sectional area of A0 = 100 mm² is subjected to an axial tensile force of F = 50 kN. What is the engineering stress (σ) experienced by the bar?
Correct Answer:
500 MPa
Question 2
A tensile specimen with a gauge length of L0 = 200 mm elongates to a length of L = 200.4 mm under an applied load. What is the engineering strain (ε)?
Correct Answer:
0.002 (0.2%)
Question 3
A structural steel rod of diameter d = 10 mm and original length L0 = 0.5 m is subjected to a tensile force F = 16.5 kN within its elastic limit. Given Young's modulus E = 210 GPa for steel, calculate the total elongation (ΔL) of the rod.
Correct Answer:
0.50 mm
Question 4
In a Brinell hardness test on a metallic alloy, a hardened steel ball of diameter D = 10 mm is applied under a load F = 3000 kgf. The measured indentation diameter is d = 4.0 mm. Calculate the Brinell Hardness Number (HB). [Formula: HB = 2F / (π D (D - √(D² - d²)))]
Correct Answer:
229 HB
Question 5
In a Charpy impact test, a heavy pendulum striker of mass m = 20 kg is released from a height h1 = 1.5 m. After fracturing the notched test specimen, the pendulum swings to a maximum height h2 = 0.6 m on the opposite side. Assuming g = 9.8 m/s², what is the impact energy absorbed by the specimen?
Correct Answer:
176.4 J
Question 1
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Prepare with the Aragón PAU Technology and Engineering II Practice Questions - Aragón PAU Technology and Engineering II (Tecnología e Ingeniería II 2o Bachillerato) Exam practice quiz. This question bank includes 100 questions covering heat, calculate, steel, thermal, and power. Use it to review important concepts, identify knowledge gaps, and build confidence for the related exam, course, or assessment.

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Aragón PAU Technology and Engineering II Practice Questions - Aragón PAU Technology and Engineering II (Tecnología e Ingeniería II 2o Bachillerato) Exam

This practice set contains 100 questions from the matching question bank and focuses on heat, calculate, steel, thermal, and power. Work through each question carefully, review the provided solutions, and revisit topics that need more study before your next attempt.

This is an independent study resource intended for practice and review; it is not an official examination or an endorsement by any organization named in the title.

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