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100+ Free Basque PAU Technology & Eng II Practice Questions
Basque Country PAU Technology & Engineering II Examination — UPV/EHU (2º Bachillerato 2026) practice questions are available now; exam metadata is being verified.
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2026 Statistics
Key Facts: Basque PAU Technology & Eng II Exam
90 Minutes
Exam time duration
UPV/EHU PAU Commission
EUR 86.33
Ordinary registration fee
UPV/EHU 2026 Fees
0–10 Scale
Grading scale for Bachillerato and PAU exams
Spanish Ministry of Education
1 Core Blocks
Official syllabus domains
UPV/EHU Syllabus
100 Questions
Practice bank size in OpenExamPrep
OpenExamPrep
Basque Country PAU Technology & Engineering II (UPV/EHU 2026) is a 90-minute university entrance exam assessing 2º Bachillerato syllabus domains.
Sample Basque PAU Technology & Eng II Practice Questions
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1A cylindrical steel specimen with a diameter of 10.0 mm (cross-sectional area A = 78.54 mm²) is subjected to a uniaxial tensile load of 31,416 N. What is the engineering tensile stress σ induced in the specimen?
A.800 MPa
B.200 MPa
C.400 MPa
D.100 MPa
Explanation: Tensile stress σ is defined as load divided by initial cross-sectional area (σ = F / A). Converting 31,416 N / (7.854 × 10^-5 m²) yields 400,000,000 Pa or 400 MPa.
2A copper rod with initial length L₀ = 2.0 m and cross-sectional area A = 50.0 mm² is pulled in tension by a 6,000 N force. Given Young's modulus E = 120 GPa for copper, what is the elastic elongation ΔL of the rod?
A.1.0 mm
B.4.0 mm
C.0.5 mm
D.2.0 mm
Explanation: Tensile stress σ = 6,000 N / (50 × 10^-6 m²) = 120 MPa. Hooke's Law gives strain ε = σ / E = 120 MPa / 120 GPa = 0.001. Elongation ΔL = ε × L₀ = 0.001 × 2,000 mm = 2.0 mm.
3In a standard tensile test curve of engineering stress versus engineering strain, what property corresponds to the maximum stress point prior to localized necking?
A.Ultimate tensile strength (UTS)
B.Yield strength (0.2% offset)
C.Proportional limit
D.Fracture stress
Explanation: Ultimate tensile strength (UTS) represents the maximum engineering stress the material can sustain before necking begins. Beyond UTS, stress decreases due to rapid localized cross-sectional area reduction until fracture.
4A Brinell hardness test is conducted using a 10 mm diameter hardened steel ball indenter under a load of 3,000 kgf. If the resulting indentation diameter d is measured as 4.0 mm, what is the approximate Brinell Hardness Number (HB)?
A.310 HB
B.229 HB
C.450 HB
D.150 HB
Explanation: Brinell hardness is calculated as load divided by indentation surface area: HB = 2F / [π D (D - √(D² - d²))]. Substituting F = 3000, D = 10, d = 4.0 yields HB = 6000 / [π × 10 × (10 - √(84))] = 6000 / 26.227 ≈ 228.8 HB.
5Which hardness test uses a square-based diamond pyramid indenter with an apex angle of 136° between opposite faces, applicable across soft and hard metals?
A.Shore scleroscope test
B.Brinell hardness test (HB)
C.Vickers hardness test (HV)
D.Rockwell B test (HRB)
Explanation: The Vickers hardness test uses a 136° square-based diamond pyramid indenter. The hardness HV is determined by dividing the applied load by the surface area of the microscopic square indentation.
6In a Charpy V-notch impact test, a 30 kg pendulum drops from a height of 1.5 m and swings up to 0.5 m after fracturing a specimen with cross-section A = 0.8 cm². Taking g = 9.81 m/s², what is the impact resilience K in J/cm²?
A.184 J/cm²
B.552 J/cm²
C.220 J/cm²
D.368 J/cm²
Explanation: Absorbed impact energy ΔE = m · g · (h1 - h2) = 30 × 9.81 × (1.5 - 0.5) = 294.3 J. Impact resilience K = ΔE / A = 294.3 J / 0.8 cm² = 367.875 J/cm² ≈ 368 J/cm².
7Why do body-centered cubic (BCC) carbon steels become dangerously susceptible to sudden brittle fracture when exposed to low sub-zero operating temperatures?
A.They undergo a sharp ductile-to-brittle transition as temperature drops below DBTT
B.Their Young's modulus drops to zero below 0 °C
C.Austenite decomposes into soft pure ferrite at low temperature
D.Impact energy absorption increases exponentially when cold
Explanation: BCC metals experience a Ductile-to-Brittle Transition Temperature (DBTT). Below DBTT, plastic slip becomes restricted, causing the material to absorb very little energy and fail by cleavage (brittle fracture).
8On a Wöhler S-N curve (stress amplitude versus number of cycles to failure), what does the endurance limit (fatigue limit) of a ferrous alloy signify?
A.The maximum energy absorbed during a single dynamic impact stroke
B.The maximum cyclic stress amplitude below which the component can endure infinite loading cycles without fatigue failure
C.The stress amplitude at which crack propagation reaches speed of sound
D.The static stress level at which instant yield occurs
Explanation: The endurance limit is the horizontal asymptote on an S-N curve for steel. Cyclic stresses applied below this threshold will theoretically never cause fatigue failure regardless of cycle count.
9What is the governing characteristic of the secondary (steady-state) stage of creep deformation in metallic components at elevated temperatures under constant load?
A.Complete elastic recovery when the applied load is removed
B.A rapidly decreasing strain rate caused by continuous work hardening
C.A constant creep strain rate caused by dynamic equilibrium between strain hardening and thermal recovery
D.An accelerating strain rate caused by necking and microvoid coalescence
Explanation: Secondary creep exhibits a constant strain rate (dε/dt = constant) because thermal recovery processes (dislocation climb and grain boundary slide) balance the strain hardening rate.
10A binary alloy of components A and B containing 40 wt% B is held at a temperature where phase α (10 wt% B) and phase β (70 wt% B) coexist. According to the lever rule, what is the mass fraction of phase α?
A.33.3%
B.66.7%
C.25%
D.50%
Explanation: By the lever rule, mass fraction W_α = (C_β - C₀) / (C_β - C_α) = (70 - 40) / (70 - 10) = 30 / 60 = 0.50 or 50%.
About the Basque PAU Technology & Eng II Practice Questions
Verified exam format metadata for Basque Country PAU Technology & Engineering II Examination — UPV/EHU (2º Bachillerato 2026) is pending. The practice questions above remain available while official exam length, timing, passing score, fee, and administrator details are reviewed.