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100+ Free Valencian Community PAU Technology & Engineering II Practice Questions
Valencian Community PAU Technology and Engineering II (Tecnologia i Enginyeria II 2º Bachillerato) practice questions are available now; exam metadata is being verified.
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2026 Statistics
Key Facts: Valencian Community PAU Technology & Engineering II Exam
90 Mins
Official examination duration
Generalitat Valenciana PAU Regulations
Min 4.0
Minimum Access Phase score required to combine with Bachillerato GPA
Valencian University Access Commission
4 Domains
Materials, Mechanics & Energy, Control & Robotics, Digital Systems & Telecom
LOMLOE 2º Bachillerato Syllabus
100
Practice questions available in this OpenExamPrep bank
OpenExamPrep
The Valencian Community PAU Technology and Engineering II exam evaluates 2nd Bachillerato Science and Technology students across four primary domains. This 100-question practice set offers an English-language MCQ adaptation for targeted study.
Sample Valencian Community PAU Technology & Engineering II Practice Questions
Try these sample questions to test your Valencian Community PAU Technology & Engineering II exam readiness. Each question includes a detailed explanation. Start the interactive quiz above for the full 100+ question experience with AI tutoring.
1A cylindrical metallic rod with an initial cross-sectional area of 100 mm² is subjected to an axial tensile force of 50,000 N. What is the engineering stress (σ) experienced by the rod?
A.500 MPa
B.50 MPa
C.5000 MPa
D.5 MPa
Explanation: Engineering stress is defined as force per unit initial area: σ = F / A₀. Converting units, 50,000 N / 100 mm² = 500 N/mm² = 500 MPa.
2A tensile test specimen with an initial gauge length of 200 mm elongates to 201.5 mm under elastic load. What is the engineering strain (ε)?
A.0.0075
B.0.075
C.0.0015
D.1.5
Explanation: Engineering strain is defined as the change in length divided by initial length: ε = ΔL / L₀ = (201.5 - 200) / 200 = 1.5 / 200 = 0.0075 (or 0.75%).
3According to Hooke's Law (σ = E · ε), what stress is induced in a structural steel member with Young's Modulus E = 200 GPa when it undergoes an elastic strain of 0.001?
A.200 MPa
B.20 MPa
C.2000 MPa
D.0.2 MPa
Explanation: Hooke's Law states σ = E · ε. Converting Young's Modulus: E = 200 GPa = 200,000 MPa. Stress = 200,000 MPa × 0.001 = 200 MPa.
4Which indenter geometry is standard for conducting a Brinell hardness test (HBW)?
A.Hardened steel or tungsten carbide spherical ball
B.136-degree square-based diamond pyramid
C.120-degree diamond cone
D.Sharp diamond chisel edge
Explanation: The Brinell test uses a spherical indenter (hardened steel or tungsten carbide ball) pressed into the sample under a standard load.
5What key mechanical property does a Charpy pendulum impact test measure?
A.Notch toughness / impact resilience under dynamic loading
B.Surface resistance to localized plastic indentation
C.Modulus of elasticity under slow uniaxial tension
D.Creep deformation rate at elevated temperatures
Explanation: The Charpy test measures the energy absorbed during rapid fracture of a notched specimen, evaluating dynamic notch toughness/resilience.
6On the iron-carbon (Fe-C) equilibrium phase diagram, what carbon concentration and temperature define the eutectoid point of steel?
A.0.76% C at 727°C
B.4.30% C at 1147°C
C.2.11% C at 912°C
D.0.022% C at 727°C
Explanation: The eutectoid reaction occurs at 0.76% C and 727°C, where solid austenite (γ) transforms into pearlite (ferrite + cementite).
7What is the main objective of performing a full annealing heat treatment (recocido) on cold-worked steel?
A.To soften the material, relieve internal residual stresses, and restore ductility
B.To maximize hardness and tensile strength by forming brittle martensite
C.To produce a high-nitrogen wear-resistant hard outer surface case
D.To eliminate carbon from the steel alloy matrix
Explanation: Full annealing involves heating above transformation temperatures followed by slow furnace cooling, which softens steel, relieves internal stresses, and restores ductility.
8Which condition is essential for galvanic corrosion to occur between two metallic parts?
A.Electrical contact between two dissimilar metals exposed to a conducting electrolyte
B.Exposure of a single pure metal to ultra-high vacuum environment
C.Rapid mechanical cyclic loading in dry air
D.Absence of oxygen and water vapor in the surrounding gas phase
Explanation: Galvanic corrosion requires two metals with different electrode potentials in direct electrical contact immersed in an electrolyte.
9A cylindrical steel rod with Young's Modulus E = 210 GPa and initial length L₀ = 500 mm supports an axial load F = 42 kN. If maximum allowable elastic elongation is ΔL = 0.5 mm, what minimum cross-sectional area A₀ is required?
A.200 mm²
B.100 mm²
C.400 mm²
D.50 mm²
Explanation: Strain ε = ΔL / L₀ = 0.5 / 500 = 0.001. Allowable stress σ = E · ε = 210,000 MPa × 0.001 = 210 MPa. Minimum area A₀ = F / σ = 42,000 N / 210 N/mm² = 200 mm².
10A Brinell test uses a ball indenter of diameter D = 10 mm and a load F = 3000 kgf. If the impression diameter is measured as d = 4 mm, calculate the Brinell Hardness Number using HBW = 2F / [π D (D - √(D² - d²))].
A.114.4 HBW
B.228.8 HBW
C.57.2 HBW
D.342.1 HBW
Explanation: √(D² - d²) = √(100 - 16) = √84 ≈ 9.165 mm. D - √(D² - d²) = 10 - 9.165 = 0.835 mm. Surface area = π × 10 × 0.835 ≈ 26.23 mm². HBW = 3000 / 26.23 ≈ 114.4 HBW.
About the Valencian Community PAU Technology & Engineering II Practice Questions
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