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Key Facts: EGEL Plus Ingeniería Mecánica Exam

208

Total items on the official EGEL Plus IMECA (148 disciplinary + 60 transversal)

Ceneval, Guía para el sustentante EGEL Plus IMECA

9 hours

Two sessions of 4.5 hours each on the same day

Ceneval, Guía para el sustentante EGEL Plus IMECA

1000

Minimum Índice Ceneval for a Satisfactorio level in an area or section

Ceneval, Guía para el sustentante EGEL Plus IMECA

1150

Minimum Índice Ceneval for a Sobresaliente level

Ceneval, Guía para el sustentante EGEL Plus IMECA

MXN 1,885

Individual national Examen desde casa fee in 2026

Ceneval EGEL portal

Ceneval's EGEL Plus IMECA is a 208-item, nine-hour Spanish exit exam: 148 disciplinary items in four areas plus 60 transversal language and communication items.

Sample EGEL Plus Ingeniería Mecánica Practice Questions

Try these sample questions to review concepts for the EGEL Plus Ingeniería Mecánica exam. Each question includes a detailed explanation. Start the interactive quiz above for the full 100+ question experience with AI tutoring.

1A simply supported horizontal beam of length L = 6.0 m carries a concentrated downward load of P = 12 kN at a distance of 2.0 m from the left support A. Assuming no horizontal forces, what is the vertical reaction force at the right support B?
A.4.0 kN
B.8.0 kN
C.6.0 kN
D.24.0 kN
Explanation: Applying rotational static equilibrium about support A (ΣM_A = 0): (12 kN)(2.0 m) - R_B(6.0 m) = 0, which yields R_B = 24 / 6.0 = 4.0 kN. By vertical equilibrium (ΣF_y = 0), the reaction at A is R_A = 12 kN - 4.0 kN = 8.0 kN.
2A cart with a total mass of m = 500 kg is accelerated horizontally along a straight track at a constant acceleration of a = 3.0 m/s². Using D'Alembert's principle of dynamic equilibrium, what is the magnitude of the fictitious inertia force acting on the cart in the direction opposite to acceleration?
A.1,500 N
B.4,905 N
C.166.7 N
D.6,405 N
Explanation: D'Alembert's principle transforms a dynamics problem into an equivalent static equilibrium problem by introducing a reversed effective force (inertia force) F_inertial = -m·a. The magnitude of this inertia force is |F_inertial| = m · a = 500 kg × 3.0 m/s² = 1,500 N, directed opposite to the acceleration vector.
3In a planar four-bar linkage, the lengths of the links are: shortest link s = 30 mm, longest link l = 90 mm, and the two intermediate links p = 50 mm and q = 80 mm. According to Grashof's criterion, what type of mechanism is formed when the shortest link s is fixed to the ground frame?
A.Double-crank (drag-link) mechanism
B.Crank-rocker mechanism
C.Double-rocker mechanism
D.Non-Grashof (triple-rocker) mechanism
Explanation: Grashof's condition states that continuous relative rotation occurs if s + l ≤ p + q. Here, s + l = 30 + 90 = 120 mm, and p + q = 50 + 80 = 130 mm. Since 120 < 130, the linkage is Grashof (Class I). In a Class I linkage, fixing the shortest link (s) yields a double-crank (drag-link) inversion, where both adjacent links can rotate through complete 360-degree revolutions.
4In the kinematic analysis of a planar rigid body moving in a plane, how is the instantaneous center of zero velocity (ICZV) defined?
A.The point in the body or its extension that has zero linear velocity at a specific instant
B.The point where both linear velocity and linear acceleration are simultaneously zero
C.The center of gravity of the rigid body where all external dynamic forces act
D.The fixed geometric pivot around which the mechanism rotates throughout its entire cycle
Explanation: The instantaneous center of zero velocity (ICZV or ICR) is the unique point in the body (or on its imaginary extension) that has zero velocity at the given instant. At that instant, the planar motion of the body can be treated as pure rotation about this center, although its acceleration at that point is generally non-zero.
5A solid circular bar with a cross-sectional area A = 500 mm² and section modulus Z = 5,000 mm³ is subjected simultaneously to a tensile axial force P = 50 kN and a bending moment M = 150 N·m. What is the maximum normal tensile stress on the outer fibers?
A.130 MPa
B.100 MPa
C.30 MPa
D.70 MPa
Explanation: The axial tensile stress is σ_axial = P / A = (50,000 N) / (500 mm²) = 100 MPa. The maximum bending stress is σ_bend = M / Z = (150,000 N·mm) / (5,000 mm³) = 30 MPa. By superposition, the maximum tensile stress on the convex outer fiber is σ_max = σ_axial + σ_bend = 100 MPa + 30 MPa = 130 MPa.
6A 2D element is subjected to normal stresses σ_x = 80 MPa, σ_y = -20 MPa, and shear stress τ_xy = 0. What is the maximum in-plane shear stress τ_max in this element?
A.50 MPa
B.30 MPa
C.100 MPa
D.60 MPa
Explanation: Since τ_xy = 0, the given normal stresses are principal stresses: σ_1 = 80 MPa and σ_2 = -20 MPa. From Mohr's circle, the radius represents the maximum in-plane shear stress: τ_max = (σ_1 - σ_2) / 2 = [80 - (-20)] / 2 = 100 / 2 = 50 MPa.
7A turned shaft is specified as 25.00 ± 0.05 mm (LSL = 24.95 mm, USL = 25.05 mm). A capability study of the stable process gives a mean of 25.01 mm and a standard deviation σ = 0.01 mm. What are the process capability indices Cp and Cpk?
A.Cp ≈ 1.67, Cpk ≈ 1.33
B.Cp ≈ 1.67, Cpk ≈ 2.00
C.Cp ≈ 3.33, Cpk ≈ 2.67
D.Cp ≈ 1.33, Cpk ≈ 1.67
Explanation: Cp compares the tolerance width with the natural process spread: Cp = (USL − LSL) / (6σ) = 0.10 / 0.06 ≈ 1.67. Cpk also accounts for centering and uses the nearer limit: Cpu = (25.05 − 25.01) / (3 × 0.01) ≈ 1.33 and Cpl = (25.01 − 24.95) / (3 × 0.01) = 2.00, so Cpk = min(1.33, 2.00) ≈ 1.33. The process is capable, but its mean is shifted toward the upper limit.
8According to Lamé's equations for a thick-walled cylinder subjected solely to internal gauge pressure p_i with inner radius r_i and outer radius r_o, at which location does the maximum tangential (hoop) tensile stress occur?
A.At the inner surface (r = r_i)
B.At the outer surface (r = r_o)
C.At the geometric mid-radius (r = (r_i + r_o) / 2)
D.Uniformly distributed across the entire wall thickness
Explanation: Lamé's equation for tangential stress under internal pressure is σ_t(r) = [p_i · r_i² / (r_o² - r_i²)] · [1 + (r_o / r)²]. Because the term 1/r² decreases monotonically with radius r, the maximum tangential stress occurs at the innermost fiber where r = r_i, reaching σ_t,max = p_i · (r_o² + r_i²) / (r_o² - r_i²).
9When designing machine components manufactured from ductile steel under plane stress conditions, how does the safe design region predicted by the Maximum Shear Stress (Tresca) theory compare to that of the Distortion Energy (von Mises) theory?
A.Tresca is a hexagon inscribed inside the von Mises ellipse, making Tresca more conservative
B.Tresca is an ellipse circumscribed outside the von Mises hexagon, making Tresca less conservative
C.Tresca and von Mises yield identical envelopes across all stress quadrants
D.Tresca is more conservative only in pure hydrostatic compression but less conservative in pure shear
Explanation: In the σ_1-σ_2 plane, the Tresca yield criterion plots as a regular hexagon entirely enclosed within the von Mises yield ellipse. Consequently, Tresca is more conservative for all stress states except uniaxial tension/compression and equal biaxial tension/compression where the two criteria touch.
10A cylindrical shaft is subjected to a pure normal bending stress σ = 120 MPa and a torsional shear stress τ = 40 MPa at its critical point. What is the von Mises equivalent stress σ_v?
A.138.6 MPa
B.160.0 MPa
C.126.5 MPa
D.144.2 MPa
Explanation: For a state of plane stress with normal stress σ and shear stress τ (where σ_y = 0), the von Mises equivalent stress formula is σ_v = √(σ² + 3·τ²). Substituting the values: σ_v = √[(120)² + 3·(40)²] = √[14,400 + 3·(1,600)] = √[14,400 + 4,800] = √19,200 ≈ 138.56 MPa.

About the EGEL Plus Ingeniería Mecánica Exam

Independent EGEL Plus Ingeniería Mecánica practice by OpenExamPrep. The official Ceneval examination is in Spanish and has 208 three-option items: 148 disciplinary items in Diseño mecánico, Termofluidos, Procesos de manufactura, and Automatización y control, and 60 transversal Lenguaje y Comunicación items. This bank is an English-language study adaptation with four-option multiple-choice questions, not an official translation or format simulation. Disciplinary stems and explanations are in English. Language and communication items keep their Spanish passages and answer options, because Spanish usage is the skill being tested, and give their instructions and explanations in English.

Exam sponsor: Centro Nacional de Evaluación para la Educación Superior (Ceneval). The requirements and fees below concern the certification or admission exam, separate from our free practice resources.

Assessment

208 three-option items: 148 disciplinary items (Diseño mecánico 40, Termofluidos 39, Procesos de manufactura 39, Automatización y control 30) and 60 transversal items in Comprensión Lectora and Redacción Indirecta.

Time Limit

Two sessions of 4.5 hours each on the same day (9 hours in total)

Passing Score

Each area and each section is reported on the Índice Ceneval (700-1300): 700-999 Aún no satisfactorio, 1000-1149 Satisfactorio, 1150-1300 Sobresaliente. The global result is weighted toward the disciplinary section: Satisfactorio or better there earns at least a Testimonio de Desempeño Satisfactorio, and a Testimonio de Desempeño Sobresaliente requires Sobresaliente in the disciplinary section and at least Satisfactorio in Lenguaje y Comunicación

Exam / Certification Fees

MXN 1,885 for the 2026 national Examen desde casa; institutional administrations may charge a different amount

Exam sponsor website

Fees, eligibility, and exam policies can change. Confirm them with the exam sponsor before applying or paying.

Official sources

Our practice resources: topics covered

We aim to reflect publicly available exam outlines and topic information in our study resources. Coverage, format, and difficulty may differ from the actual exam, and we cannot guarantee that every detail is accurate or current. Confirm exam requirements, fees, and policies with the official exam sponsor.

40 of 148 disciplinary items

Diseño mecánico

Static and dynamic equilibrium, mechanisms and mechanical vibrations, properties and strength of materials, and design of mechanical elements and systems (10 items each)

39 of 148 disciplinary items

Termofluidos

Fluid properties and mechanics (10), fluid machinery (14) and thermodynamic systems (15)

39 of 148 disciplinary items

Procesos de manufactura

Machining and manufacturing systems (18), costs and budgets (11), and quality control systems (10)

30 of 148 disciplinary items

Automatización y control

Classical and modern control systems, hydraulic and pneumatic installations, and automation (10 items each)

60 of 208 total items

Lenguaje y Comunicación

Reading comprehension of academic, literary and public-interest texts (30 items) and indirect writing, which asks candidates to choose the version of a text that is correct, coherent and well punctuated (30 items)

Preparing for the EGEL Plus Ingeniería Mecánica Exam

What You Need to Know

  • Passing score: Each area and each section is reported on the Índice Ceneval (700-1300): 700-999 Aún no satisfactorio, 1000-1149 Satisfactorio, 1150-1300 Sobresaliente. The global result is weighted toward the disciplinary section: Satisfactorio or better there earns at least a Testimonio de Desempeño Satisfactorio, and a Testimonio de Desempeño Sobresaliente requires Sobresaliente in the disciplinary section and at least Satisfactorio in Lenguaje y Comunicación
  • Assessment: 208 three-option items: 148 disciplinary items (Diseño mecánico 40, Termofluidos 39, Procesos de manufactura 39, Automatización y control 30) and 60 transversal items in Comprensión Lectora and Redacción Indirecta.
  • Time limit: Two sessions of 4.5 hours each on the same day (9 hours in total)
  • Exam / certification fees: MXN 1,885 for the 2026 national Examen desde casa; institutional administrations may charge a different amount Official sources

Using Our Practice Resources

  • Work through all 100 available questions
  • Review every answer and explanation
  • Track weak areas and revisit them
  • Use our AI tutor for tough concepts

EGEL Plus Ingeniería Mecánica: Suggested Study Strategy

1Master mechanical design calculations: equilibrium and reactions, stresses and deflections, von Mises and Tresca criteria, fatigue, and bearing life.
2Work through thermofluids: Darcy-Weisbach losses, pump selection and NPSH, and Otto, Diesel, Rankine and Brayton cycles.
3Machining and manufacturing systems is the largest subarea (18 items): practice cutting speed, material removal rate and machining time, and review costs, break-even and depreciation.
4Review quality control and automation: Cp and Cpk, X-bar charts, second-order responses, pneumatic circuits and PLC logic.
5Prepare for Lenguaje y Comunicación by reading academic articles, essays and public notices in Spanish, and by reviewing agreement, punctuation, accentuation and connectors.

Frequently Asked Questions

What is the EGEL Plus Ingeniería Mecánica?

The EGEL Plus Ingeniería Mecánica (EGEL Plus IMECA) is Ceneval's national exit examination for graduates of the Licenciatura en Ingeniería Mecánica and related programs. It measures the knowledge and skills considered indispensable at the end of the degree, plus Spanish reading comprehension and indirect writing. Institutions may use the result as a graduation requirement, a titulación option or part of a course grade, under their own rules; a Testimonio does not by itself determine the award of the degree or the cédula profesional.

How many questions are on the official EGEL Plus IMECA and how long is it?

The official exam has 208 items: 148 disciplinary items (Diseño mecánico 40, Termofluidos 39, Procesos de manufactura 39, Automatización y control 30) and 60 Lenguaje y Comunicación items (30 reading comprehension and 30 indirect writing). It is given on one day in two sessions of 4.5 hours each (9 hours). About 15% of the items are pilot items that do not count toward the result.

How is the EGEL Plus IMECA scored?

Each area and section is reported on the Índice Ceneval from 700 to 1300: 700-999 Aún no satisfactorio, 1000-1149 Satisfactorio and 1150-1300 Sobresaliente. The global result follows a conjunctive rule weighted toward the disciplinary section: Satisfactorio or better in the disciplinary section earns at least a Testimonio de Desempeño Satisfactorio, while a Testimonio de Desempeño Sobresaliente requires Sobresaliente in the disciplinary section and at least Satisfactorio in Lenguaje y Comunicación. Candidates with a global Sobresaliente who take the exam for the first time within one year of finishing the degree are eligible for the Premio Ceneval al Desempeño de Excelencia-EGEL.

Can I use a calculator or formula sheet on the EGEL Plus IMECA?

Yes. The official guide allows a non-programmable scientific calculator, which may not be shared between candidates. Ceneval also provides a formulario (formula sheet), handed out on paper or shown on the exam platform depending on the modality, and publishes it on its EGEL portal so you can study with it in advance.

Why is this practice bank in English if the official exam is in Spanish?

The official Ceneval exam is in Spanish. This bank is an independent English-language study adaptation with four-option questions, not an official translation or format simulation. Disciplinary questions and explanations are in English so you can review the engineering content. Language and communication items keep their Spanish passages and options because they test Spanish usage, and their instructions and explanations are in English.

What reference material is allowed on EGEL Plus IMECA?

A non-programmable scientific calculator is allowed, and Ceneval provides a formulario for the exam, printed or on the exam platform depending on the modality. The formulario is published on the Ceneval EGEL portal, so candidates can study with it in advance.