Indian Forest Service 2017 Mechanical Engineering Paper I PDF

Central Government Jobs Engineer 2017

  • Year 2017
  • Conducted By UPSC
  • Questions 8
  • Maximum Marks 200
  • Duration Three Hours
  • Languages English

Exam Details

Detail Information
Examination Indian Forest Service (Main) Examination
Year 2017
Conducting Body UPSC
Paper Mechanical Engineering Paper - I
Subject Mechanical Engineering
Duration Three Hours
Maximum Marks 200
Number of Questions 8
Question Type Mixed

This is the Mechanical Engineering Paper I from the Indian Forest Service (Main) Examination held in 2017 by UPSC. The paper is designed to test candidates' in-depth knowledge of mechanical engineering principles. It consists of a total of eight questions, out of which five are to be attempted. Questions 1 and 5 are compulsory, and candidates must select at least one question from each of the two sections (A and B) from the remaining six. The paper allows a time duration of three hours and carries a maximum of 200 marks. This paper is crucial for aspirants aiming for a career in the Indian Forest Service, providing valuable insights into the exam's scope and difficulty.

Major Topics Covered

  • Slider-crank reciprocating mechanism
  • Belt drives
  • Thermal expansion
  • Stress and strain
  • Principal stresses
  • Shear stress
  • Crystal structures
  • Law of gearing
  • Involute profiles
  • Gear interference

Why This Paper is Important

  • Useful for Indian Forest Service (Main) Examination 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

  • Indian Forest Service (Main) Examination 2016 Mechanical Engineering Paper I
  • Indian Forest Service (Main) Examination 2018 Mechanical Engineering Paper I
  • Engineering Services Examination 2017 Mechanical Engineering Paper I
  • Indian Forest Service 2017 Mechanical Engineering Paper I Answer Key
  • Indian Forest Service Mechanical Engineering Syllabus
  • UPSC Mechanical Engineering Syllabus
  • Indian Forest Service Exam Pattern
  • UPSC Main Exam Pattern

Instructions

  • There are EIGHT questions in all, out of which FIVE are to be attempted.
  • Out of the remaining SIX questions, THREE are to be attempted selecting at least ONE question from each of the two Sections A and B.
  • Attempts of questions shall be counted in sequential order.
  • Unless struck off, attempt of a question shall be counted even if attempted partly.
  • Any page or portion of the page left blank in the Question-cum-Answer Booklet must be clearly struck off.
  • The number of marks carried by a question/part is indicated against it.
  • Answers must be written in ENGLISH only.
  • Unless otherwise mentioned, symbols and notations have their usual standard meanings.
  • Assume suitable data, if necessary and indicate the same clearly.
  • Neat sketches may be drawn, wherever required.

Questions (page 2)

Section A

Q1.

(a) A slider-crank reciprocating mechanism has the following data: Radius of the crank = 480 mm Length of the connecting rod = 1600 mm Angular velocity of the crank = 20 rad/s Find the velocity and acceleration of the piston for the crank position of θ = 45\circ from the inner dead centre.

(b) Two pulleys having diameters 640 mm and 480 mm, are used to connect two parallel shafts by a crossed belt drive. The distance between the centre lines of the shafts is 3 m. Determine how much the length of the belt should be changed, if it is desired to alter the direction of rotation of the driven shaft.

(c) A rod of 1 m length is kept at a temperature of 30\circC. Find the expansion of the rod when the temperature is raised to 80\circC. If this expansion is prevented, find the stress induced in the material of the rod. Take E = 100 GPa and α = 0.000012/°C.

(d) The state of stress at a point in a loaded piece of material is given by σ_x = 85 kPa, σ_y = -40 kPa and \tauxy = ± 50 kPa. Find the magnitudes of the principal stresses. Also find the magnitude of the maximum shear stress and the plane on which this acts.

(e) In a simple cubic crystal, draw the following planes: (i) (110) (ii) (111)

Section A

Q2.

(a) (i) State the law of gearing. Also state the condition to meet the above requirement. Name the forms of teeth profiles normally used to avoid interference between the mating gears. (ii) A pair of pinion and gear of 20\circ pressure angle involute profiles mesh externally and provide a velocity ratio of 3. The addendum is equal to 1.12 of module. Determine the minimum number of teeth on each to avoid interference.

Question paper preview

Scanned pages 1–2 for reference. Download the official PDF for the full paper.

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Indian Forest Service (Main) Examination 2017 Mechanical Engineering Paper I question paper page 1 scan showing exam name, subject, time, marks, and instructions. UPSC IFS exam PDF download.
Page 2
Indian Forest Service (Main) Examination 2017 Mechanical Engineering Paper I question paper page 1 scan showing exam name, subject, time, marks, and instructions. UPSC IFS exam PDF download.

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Frequently asked questions

What is the name of the exam?

The exam is the Indian Forest Service (Main) Examination.

What is the year of this question paper?

This question paper is from the year 2017.

Which paper is this?

This is Mechanical Engineering Paper - I.

Who conducts the Indian Forest Service Examination?

The Indian Forest Service Examination is conducted by the UPSC (Union Public Service Commission).

What is the maximum marks for Mechanical Engineering Paper - I?

The maximum marks for this paper are 200.

What is the time duration allowed for this paper?

The time allowed for this paper is Three Hours.

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