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100+ Free Castilla y León PAU Technology and Engineering II Practice Questions
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2026 Statistics
Key Facts: Castilla y León PAU Technology and Engineering II Exam
90 min
Exam Time Limit
Junta de Castilla y León
0–10
Grading Scale
USAL / UVA / UBU / ULE
4.0
Min. Access Phase Score
Comisión PAU Castilla y León
EUR 76.82
Base Registration Fee
Junta de Castilla y León
5 Core Units
Curriculum Content Areas
2º Bachillerato Technology & Engineering II Syllabus
The Castilla y León PAU Technology and Engineering II exam (Tecnología e Ingeniería II) is administered by public universities in Castilla y León (USAL, UVA, UBU, ULE) for students completing 2nd Bachillerato. The exam lasts 90 minutes and is graded on a 0–10 scale (minimum 4.0 required in the Access Phase). Note that local questions on this platform are an English-language MCQ study adaptation created to help students master the underlying 2nd Bachillerato curriculum.
Sample Castilla y León PAU Technology and Engineering II Practice Questions
Try these sample questions to test your Castilla y León PAU Technology and Engineering II exam readiness. Each question includes a detailed explanation. Start the interactive quiz above for the full 100+ question experience with AI tutoring.
1What does Hooke's Law state for an engineering material operating within its elastic limit under uniaxial tension?
A.Stress is directly proportional to strain
B.Stress is inversely proportional to cross-sectional area squared
C.Strain is proportional to temperature change only
D.Stress is proportional to the square of plastic elongation
Explanation: Hooke's Law states that within the elastic limit, normal stress (sigma) is directly proportional to normal strain (epsilon), represented as sigma = E * epsilon, where E is Young's modulus of elasticity. Beyond the elastic limit, plastic deformation occurs and Hooke's Law no longer applies.
2Which indenter geometry is standard for measuring the Brinell hardness (HB) of metallic materials?
A.A hardened steel or tungsten carbide spherical ball
B.A 136-degree square-based diamond pyramid
C.A 120-degree diamond cone with a spherical tip
D.A sharp conical carbide chisel point
Explanation: The Brinell hardness test uses a spherical indenter made of hardened steel or tungsten carbide (typically 10 mm in diameter) pressed into the specimen under a specified load. The Vickers test uses a 136-degree diamond pyramid, and the Rockwell C test uses a 120-degree diamond cone.
3What primary material property is evaluated using the standard Charpy pendulum impact test?
A.Notch toughness and impact energy absorption
B.Electrical conductivity under cyclic loads
C.Surface scratch resistance
D.Creep strain rate at room temperature
Explanation: The Charpy impact test measures notch toughness, which is the amount of energy absorbed by a standardized notched specimen during high-rate dynamic fracture. It is essential for determining a metal's ductile-to-brittle transition temperature.
4What is the primary objective of an annealing (recocido) heat treatment in steel processing?
A.To relieve internal stresses, soften the metal, and increase ductility
B.To maximize surface hardness while creating a brittle core
C.To transform ferrite completely into un-tempered martensite
D.To induce galvanic corrosion resistance by rapid quenching in saltwater
Explanation: Annealing involves heating steel above its critical temperature, holding it, and slowly cooling it in the furnace. This process relieves internal stresses, refines the grain structure, reduces hardness, and increases ductility for easier machining or cold working.
5Under what condition does galvanic corrosion primarily occur between two metals?
A.When two metals with different electrode potentials are electrically connected in an electrolyte
B.When a single pure metal is exposed to dry vacuum at high temperature
C.When two identical metals are welded together using an identical filler metal
D.When a polymer coating is applied evenly across an aluminum plate
Explanation: Galvanic corrosion occurs when two electrochemically dissimilar metals are in direct electrical contact inside a conductive electrolyte (such as seawater or moisture). The more anodic metal corrodes preferentially while protecting the cathodic metal.
6How is elastic deformation distinguished from plastic deformation in material mechanical behavior?
A.Elastic deformation is fully reversible upon unloading, whereas plastic deformation is permanent
B.Elastic deformation increases specimen volume by 50%, whereas plastic deformation decreases mass
C.Elastic deformation occurs only after fracture, whereas plastic deformation occurs at zero stress
D.Elastic deformation applies to liquids only, while plastic deformation applies only to gases
Explanation: Elastic deformation involves temporary stretching of atomic bonds that returns to zero permanent set upon removing the load. Plastic deformation occurs when the yield strength is exceeded, causing permanent atomic slip and non-recoverable dimensional changes.
7A cylindrical steel bar with a cross-sectional diameter of 10 mm is subjected to a tensile axial force of 31.4 kN. What is the engineering normal stress induced in the bar?
A.400 MPa
B.100 MPa
C.314 MPa
D.40 MPa
Explanation: Cross-sectional area A = pi * (d/2)^2 = pi * (0.005 m)^2 = 7.854 * 10^-5 m^2. Engineering stress sigma = F / A = (31.4 * 10^3 N) / (7.854 * 10^-5 m^2) = 4.00 * 10^8 Pa = 400 MPa.
8A metal bar with an initial gauge length of L0 = 200 mm elongates by Delta L = 0.4 mm under an applied tensile load. What is the engineering strain (epsilon)?
A.0.002 (or 0.2%)
B.0.02 (or 2.0%)
C.0.0004 (or 0.04%)
D.0.5 (or 50%)
Explanation: Engineering strain is defined as the change in length divided by the initial length: epsilon = Delta L / L0 = 0.4 mm / 200 mm = 0.002, which corresponds to 0.2%.
9A structural steel rod exhibits a tensile stress of 210 MPa at an elastic strain of 0.001. What is the Young's modulus (E) of this steel?
A.210 GPa
B.21 GPa
C.2100 GPa
D.0.21 GPa
Explanation: According to Hooke's Law, E = sigma / epsilon = (210 * 10^6 Pa) / 0.001 = 210 * 10^9 Pa = 210 GPa. This is the standard elastic modulus value for structural steel.
10How is the Lever Rule applied on a binary phase diagram to determine phase mass fractions in a two-phase region?
A.The mass fraction of a phase is proportional to the length of the opposite tie-line segment divided by the total tie-line length
B.The mass fraction equals the temperature divided by the total liquidus slope angle
C.The mass fraction is calculated by multiplying the composition of the solidus by the cooling rate
D.The mass fraction equals the length of the adjacent tie-line segment divided by atmospheric pressure
Explanation: The Lever Rule uses an isothermal tie line across a two-phase field. The mass fraction of phase A is calculated by taking the length of the tie-line segment opposite to phase A (between overall composition C0 and phase B composition CB) divided by the total tie-line length (CB - CA).
About the Castilla y León PAU Technology and Engineering II Practice Questions
Verified exam format metadata for Castilla y León PAU Technology and Engineering II (Tecnología e Ingeniería II 2º Bachillerato) is pending. The practice questions above remain available while official exam length, timing, passing score, fee, and administrator details are reviewed.