Mechanical Eng Paper-I 2025 Maharashtra MS Main

Maharashtra Government Jobs Engineer 2025

  • Year 2025
  • Conducted By Maharashtra Government
  • Questions 8
  • Maximum Marks 250
  • Duration Three Hours
  • Languages English

Exam Details

Detail Information
Examination Maharashtra State Services Main Examination
Year 2025
Conducting Body Maharashtra Government
Paper Mechanical Engineering Paper-I
Subject Mechanical Engineering
Duration Three Hours
Maximum Marks 250
Number of Questions 8
Question Type Descriptive / Subjective

This dataset combines Page 1 exam header, instructions and page 2 Section A questions for Mechanical Engineering Paper-I of the Maharashtra State Services Main Examination (2025). Page 1 confirms the exam is descriptive, English medium, with a 3-hour duration and 250 maximum marks across eight questions (five to be attempted). Page 2 presents Section A items involving torque calculation in a square-threaded screw, cross-section design for circular/square/rectangular members, CNT structure and chirality, gear profiles, transformation of austenite to martensite, and cylinder wall stresses. The OCR has been repaired to present distinct questions and sub-parts, with a plan to support SEO-friendly metadata, FAQs, topics, and image SEO. This previous year Maharashtra State Services Main Examination question paper (2025) is useful for Engineer aspirants preparing for Maharashtra government recruitment. The paper was conducted by MPSC and reflects the official exam pattern, marking scheme and difficulty level seen in recent cycles. Use it for timed practice, topic-wise revision and understanding how questions are framed in the real examination. Download the free PDF on QuizCurrent to read instructions, attempt MCQs and compare your answers with the study notes provided on this page. Key syllabus areas include Torque due to friction in screw mechanisms, Square-thread and power screw theory, Cross-section design under axial load, Circular, square, and rectangular cross-sections, CNT structure and electronic properties, Chirality and metallic vs semiconducting CNTs, Gears: cycloidal vs involute profiles, Flywheel and Governor mechanics. Useful for Maharashtra State Services Main Examinat preparation. Helps understand the latest exam pattern. Useful for practice and self-assessment.

Major Topics Covered

  • Torque due to friction in screw mechanisms
  • Square-thread and power screw theory
  • Cross-section design under axial load
  • Circular, square, and rectangular cross-sections
  • CNT structure and electronic properties
  • Chirality and metallic vs semiconducting CNTs
  • Gears: cycloidal vs involute profiles
  • Flywheel and Governor mechanics
  • Phase transformation in steels: austenite to martensite
  • Morphology of Martensite
  • Cylindrical pressure vessel stresses
  • Hoop stress in thin-walled cylinders
  • Longitudinal stress in cylinders
  • Maximum shear stress in cylindrical walls
  • Elastic stress analysis
  • Material strength parameters
  • Mechanical design of hollow structures
  • Non-destructive testing concepts (implicit in materials discussion)
  • Calculations with N/mm^2 units
  • Sectional property calculations (diameter, side, width, thickness)

Why This Paper is Important

  • Useful for Maharashtra State Services Main Examinat preparation
  • Helps understand the latest exam pattern
  • Useful for practice and self-assessment
  • Covers frequently asked General Studies topics
  • Helpful for analysing question trends

Related Resources

Instructions

  • ज्ञाव्य लेता (पुरब्धा) परीक्षा -2024 - परीक्षा दिनोक 02 में,
  • 2025 U22 BOOKLET NO. 158180 Mechanical Engineering Paper-I Time Allowed: Three Hours Maximum Marks: 250 Medium : English Type of Paper: Conventional/Descriptive

  • There are EIGHT questions divided in two Sections, out of which FIVE are to be attempted.
  • Question No. 1 and 5 are compulsory. Out of the remaining, THREE are to be
  • attempted choosing at least ONE question from each Section.
  • The number of marks carried by a question/sub question is indicated against it.
  • The medium of answer should be mentioned on the answer book as claimed in the application
  • and printed on admission card.
  • The answers written in medium other than the authorized medium will not be assessed and no marks will be assigned to them.
  • Wherever option has been given, only the required number of responses in the serial order attempted shall be assessed.
  • Unless struck off, attempt of a question shall be counted even if attempted partly.
  • Excess responses shall not be assessed and shall be ignored.
  • Candidates are expected to answer all the sub-questions of a question together.
  • sub-question of a question is attempted elsewhere (after leaving a few page or after attempting another question) the later sub-question shall be overlooked.
  • Keep in mind the word limit indicated in the question if any.
  • Any page or portion of the page left blank in the Answer Booklet must be clearly struck off.
  • Unless otherwise mentioned, symbol and notation have their usual standard meanings.
  • Assume suitable data, if necessary and indicate the same clearly. Neat sketches may be drawn, wherever required.
  • Note : Candidates will be allowed to use scientific (non-programmable type) calculators. P.T.O.

Questions (page 2)

Q1.

(b) tensile stress for the material is 100 MPa. Determine the required cross-sectional dimensions of the member for each of the following cases. i) When the member is of circular cross-section, find the diameter. ii) When the member is of square cross-section, find the side of the square. iii) When the member is of rectangular cross-section, where the width is twice the thickness, determine both the width and thickness. Q1. Explain the structure and electronic properties of Carbon Nano Tubes (CNTs).

(c) How does chiral vector influence whether a nanotube is metallic or semiconducting? i) Distinguish between the cycloidal and Involute gear profiles along with tooth Q1.

(d) forming methods. ii) Explain the difference between Flywheel and Governor with suitable examples. Explain the transformation of austenite to martensite in steels.

(e) Discuss the main Q1. characteristics and morphology formed during this transformation. i) A cylindrical pressure vessel has an internal diameter of 600 mm and a wall Q2. (a) thickness of 25 mm. It is subjected to an internal fluid pressure of

Q1.

(b) tensile stress for the material is 100 MPa. Determine the required cross-sectional dimensions of the member for each of the following cases. i) When the member is of circular cross-section, find the diameter. ii) When the member is of square cross-section, find the side of the square. iii) When the member is of rectangular cross-section, where the width is twice the thickness, determine both the width and thickness. Q1. Explain the structure and electronic properties of Carbon Nano Tubes (CNTs).

(c) How does chiral vector influence whether a nanotube is metallic or semiconducting? i) Distinguish between the cycloidal and Involute gear profiles along with tooth Q1.

(d) forming methods. ii) Explain the difference between Flywheel and Governor with suitable examples. Explain the transformation of austenite to martensite in steels.

(e) Discuss the main Q1. characteristics and morphology formed during this transformation. i) A cylindrical pressure vessel has an internal diameter of 600 mm and a wall Q2. (a) thickness of 25 mm. It is subjected to an internal fluid pressure of

Q2. Q1. (b) A mild steel rod is designed to carry an axial tensile load of 75 kN. The permissible tensile stress for the material is 100 MPa. Determine the required cross-sectional dimensions of the member for each of the following cases. i) When the member is of circular cross-section, find the diameter. ii) When the member is of square cross-section, find the side of the square. iii) When the member is of rectangular cross-section, where the width is twice the thickness, determine both the width and thickness.

Q2. 5 N/mm 2 Determine : i) The hoop (circumferential) stress ii) The longitudinal (axial) stress and iii) The maximum shear stress developed in the cylinder wall

Q3. Q1. Explain the structure and electronic properties of Carbon Nano Tubes (CNTs). How does chiral vector influence whether a nanotube is metallic or semiconducting?

Q4. Q1. (d) Distinguish between the cycloidal and Involute gear profiles along with tooth forming methods. Explain the difference between Flywheel and Governor with suitable examples.

Q5. Q1. Explain the transformation of austenite to martensite in steels. Discuss the main characteristics and morphology formed during this transformation.

Q6. Q1. (e) i) A cylindrical pressure vessel has an internal diameter of 600 mm and a wall thickness of 25 mm. It is subjected to an internal fluid pressure of 2.5 N/mm^2. Determine: i) The hoop (circumferential) stress; ii) The longitudinal (axial) stress; iii) The maximum shear stress developed in the cylinder wall.

Q7. Q2. (a) A cylindrical pressure vessel has an internal diameter of 600 mm and a wall thickness of 25 mm. It is subjected to an internal fluid pressure of 2.5 N/mm^2. Determine: i) The hoop (circumferential) stress; ii) The longitudinal (axial) stress; iii) The maximum shear stress developed in the cylinder wall.

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Frequently asked questions

What is the exam name and year?

Maharashtra State Services Main Examination, Mechanical Engineering Paper-I, 2025.

How many questions are there and how many must be attempted?

Eight questions in total; five questions must be attempted.

Which questions are compulsory?

Questions 1 and 5 are compulsory.

What is the duration of the exam?

Three hours.

What is the maximum marks for the paper?

250 marks.

What is the medium of the answers?

English (as indicated in the paper).

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