"MECHANICAL ENGINEERING FOR MODERN WORLD"
(Next-Generation Mechanical Engineering Technologies)

Q1. Python is widely used in Mechanical Engineering primarily for

A) Animation B) Data analysis and automation C) Drafting D) Design

Q2. In Machine Learning, a “model” refers to

A) 3D CAD object B) Mathematical representation trained on data C) A design prototype D) A thermal analysis graph

Q3. The characterization of materials helps to

A) Determine physical and chemical properties B) Check assemblies and helpful in material handling systems C) Create 3D models D) Measure color or density

Q4. The first step in filing a patent is

A) Publishing a paper B) Creating a prototype C) Identifying novelty in the research work D) Getting a grant

Q5. Publishing research papers enhances

A) Academic visibility and citations B) New Friends C) Promotion in career D) All of the above

Q6. In 3D printing, “infill pattern” affects

A) Color quality of model B) File compression C) Material hardness D) Accuracy of simulation results

Q7. In FEA, meshing improves

A) Define constraints and loads B) Change mesh color C) Increase solver speed D) Edit geometry

Q8. Boundary conditions in FEA are used to

A) Define constraints and loads B) Change mesh color C) Increase solver speed D) Edit geometry

Q9. The main cause of battery thermal runaway is

A) External humidity B) Excessive heat generation inside the cell C) More number of components D) Biased design

Q10. A manipulator in robotics is

A) The robot’s vision sensor B) The robot’s base C) A communication module D) The arm of the robot to handle tasks

Q11. MEMS stands for

A) Motor Embedded Machine Setup B) Mechanical Electrical Machine System C) Micro Electro Mechanical Systems D) Magnetic Electric Memory System

Q12. Rolling improves surface finish but may lead to anisotropy in properties. Forging refines grain structure and generally produces isotropic mechanical properties. (Choose the correct statement)

A) Statement 1 is only correct B) Statement 2 is only correct C) Statements 1 and 2 both are correct D) Statements 1 and 2 both are Wrong

Q13. Which of the following properties limits the large-scale use of magnesium alloys?

A) High cost B) Low Thermal Conductivity C) Poor Corrosion Resistance D) Very High Strength

Q14. Porosity in additively manufactured metals is primarily caused by

A) Overcooling B) Surface polishing C) Oxidation of powder feed D) Incomplete melting

Q15. The control system that provides feedback for real-time motion correction is called

A) Static control B) Closed-loop control C) Open-loop control D) Feedforward control

Q16. In MEMS devices, piezoelectric materials are preferred for

A) Providing thermal insulation B) Chemical sensing C) Magnetic field measurement D) Converting mechanical stress into electrical signals

Q17. A challenge in MEMS fabrication is

A) Excessive power consumption B) High component weight C) Poor sealing performance D) Magnetic interference

Q18. AZ91 alloy refers to

A) Aluminium 9% + Zinc 1% + Mg balance B) Aluminium 1% + Zinc 9% + Mg balance C) Zinc 90% + Aluminum 1% + Mg balance D) Aluminum 90% + Zinc 1% + Mg balance

Q19. In single-point cutting tool nomenclature, the rake angle is defined as

A) The angle between the flank surface and the work surface B) The angle between the rake face and a plane perpendicular to the cutting direction C) The angle between the tool axis and cutting edge D) The angle controlling tool vibration

Q20. A major challenge in cryogenic applications is

A) Material brittleness at very low temperatures B) Surface polishing C) Oxidation of powder feed D) Incomplete melting

Q21. FEA stands for

A) Force Engineering Algorithm B) Finite Energy Approximation C) Finite Element Analysis D) Fluid Energy Application

Q22. Statements about EDM: 1) In EDM, material removal takes place due to mechanical abrasion. 2) The tool and workpiece must be electrically conductive.

A) Only 1 is correct B) Only 2 is correct C) Both 1 and 2 are correct D) Both 1 and 2 are Wrong

Q23. In the context of publishing, “Impact Factor” of a journal indicates

A) Rejection rate by the Editorial Office B) Average citations per paper published in that journal C) Number of Papers Received by the editorial office D) Number of editors on board X No of Reviewers

Q24. When addressing a complex engineering problem, AI systems generally use reasoning and decision-making, whereas ML systems primarily depend on

A) Hardware improvements B) Large amounts of data for training and pattern recognition C) Programming microcontrollers D) Control algorithms

Q25. Nanomaterials are typically defined as materials having at least one dimension in the range of:

A) 1 to 1000 nanometers B) 0.1 to 100000 micrometers C) 1 to 100 nanometers D) 0.1 to 10 nanometers

Q26. In condition monitoring, the Remaining Useful Life (RUL) of a machine component refers to:

A) The total lifespan of the component from manufacturing date B) The estimated time left before the component reaches failure under current operating conditions C) The warranty period specified by the manufacturer D) The time taken for periodic maintenance to complete

Q27. Which of the following are applications of Artificial Intelligence (AI) in manufacturing systems?

A) Predictive maintenance using real-time sensor and condition monitoring data B) Process optimization through self-learning control algorithms C) Fixed parameter settings throughout the production cycle D) Fault diagnosis and defect detection with the data available

(Note: original question allowed multiple answers; here shown as single-choice per request.)

Q28. The matrix phase in a composite

A) Binds the reinforcement and transfers load B) Provides insulation only C) Acts as a filler D) Reduces density

Q29. Semi-solid abrasive tools are used for

A) Finishing complex or inaccessible surfaces B) Welding thick metals C) Cutting polymers D) Heating surfaces

Q30. Fault diagnosis and defect detection are examples of

A) Predictive maintenance tasks B) Process optimization only C) Fixed settings D) Unrelated activities