ISRO Scientist/Engineer (Mechanical) 2023: 20 Days Mock Test Challenge + Important Topics
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The ISRO Scientist/Engineer exam is scheduled for December 17, 2023, giving you a countdown of just 20 days (including today)! Are you concerned about covering the entire ISRO exam syllabus within this time frame? Perhaps you’re looking to master all the topics constituting the ISRO 2023 syllabus in a mere 30 days. If you find yourself feeling anxious about completing the comprehensive ISRO exam syllabus in just a month and are determined to secure one of the 303 coveted scientist/engineering positions, we understand your aspirations. To turn your dream into reality, seize the opportunity to achieve both immediate and long-term goals with our specially designed 30-day result-driven mock test challenge.

This challenge will not only inspire you but also keep you ahead of the curve on your journey to success. Now is the perfect time to start your path to success with a FREE ISRO Scientist/Engineer Mock Test.

Take advantage of a Free ISRO Scientist/Engineer (Mechanical) 2023 Mock Test to assess your performance right away!👈🏆

Read also: Explore the 10 Benefits of Engaging in a Free ISRO Scientist Mock Test 2023.

ISRO Scientist/Engineer Exam Pattern 2023

For those aspiring to crack the upcoming ISRO Scientist/Engineer exam, understanding the exam pattern is crucial for devising a study plan tailored to your style. The exam comprises two stages: a written test and an interview. The written exam involves 80 questions in specific disciplines and 15 questions on General Aptitude. Be mindful of the negative marking scheme, which deducts 1/3rd of marks for each incorrect answer.

Phases PaperQuestionsTime 
IWritten Test Part A: Specific Discipline80Time Duration: 120 minutes (2 Hours)
IIWritten Test Part B: General Aptitude15

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ISRO Scientist/Engineer (Mechanical) 2023: 20 Days Mock Test Challenge + Important Topics

Here’s a condensed 20-day study plan for the ISRO Scientist/Engineer (Mechanical) 2023 exam:

1Take a FREE ISRO Scientist/Engineer (Mechanical) Mock Test

-Go through Previous Year Questions (PYQs)
2– Fluid Mechanics: Fluid properties; fluid statics, manometry, buoyancy, forces on submerged bodies, stability of floating bodies; control-volume analysis of mass, momentum, and energy; fluid acceleration; differential equations of continuity and momentum.

– Turbomachinery: Impulse and reaction principles, velocity diagrams, Pelton-wheel, Francis and Kaplan turbines.
3– Thermodynamics: Thermodynamic systems and processes; properties of pure substances, behavior of ideal and real gases; zeroth and first laws of thermodynamics, calculation of work and heat in various processes. – Thermodynamics Applications: Power Plant Engineering, I.C. Engines, Refrigeration and air-conditioning.
4Take ISRO Scientist/Engineer (Mechanical) Mock Test 2 + Complete Analysis & Feedback
5– Vibrations: Free and forced vibration of single degree of freedom systems, effect of damping; vibration isolation; resonance; critical speeds of shafts.
6– Design: Design for static and dynamic loading; failure theories; fatigue strength and the S-N diagram; principles of the design of machine elements such as bolted, riveted, and welded joints; shafts, gears, rolling and sliding contact bearings, brakes and clutches, springs.
7– Engineering Mechanics: Free-body diagrams and equilibrium; friction and its applications; trusses and frames; virtual work; kinematics and dynamics of rigid bodies in plane motion.
8– Strength of Materials: Stress and strain, elastic constants, Poisson’s ratio; Mohr’s circle for plane stress and plane strain; thin cylinders; shear force and bending moment diagrams; bending and shear stresses; deflection of beams; torsion of circular shafts.

Take ISRO Scientist/Engineer (Mechanical) Mock Test 3 + Complete Analysis & Feedback
9– Theory of Machines: Displacement, velocity, and acceleration analysis of plane mechanisms; dynamic analysis of linkages; cams; gears and gear trains; flywheels and governors; balancing of reciprocating and rotating masses.
10– Engineering Materials: Structure and properties of engineering materials, phase diagrams, heat treatment, stress-strain diagrams for engineering materials. – Casting, Forming and Joining Processes: Different types of castings, design of patterns, moulds and cores; solidification and cooling; riser and gating design. Plastic deformation and yield criteria; fundamentals of hot and cold working processes.
11Take ISRO Scientist/Engineer (Mechanical) Mock Test 4 + Complete Analysis & Feedback
12– Machining Processes: Basic machine tools (lathe, drilling machine, etc.), machining operations (turning, facing, etc.), geometry of single point cutting tools (ASA system), cutting fluids/lubricants etc., tool life & wear mechanisms (Taylor’s equation), economics of machining (cutting speed/feed/depth, etc.).
13Revision/Test Series for Week 1 & Week 2 Topics
14– Industrial Engineering: Production Planning & Control (PPC), Operations Research (OR)
– Engineering Mathematics: Linear Algebra, Calculus
15– Engineering Mathematics: Probability and Statistics, Numerical Methods, Differential equations, Complex variables
– Industrial Engineering: Engineering Economy & Costing, Work System Design
16– General English: Reading Comprehension, Grammar, Vocabulary, Verbal Ability, Synonyms, Antonyms, Error Spotting, Jumbled Sentences, Fill in the Blanks
17– Reasoning Ability: Verbal Reasoning, Non-Verbal Reasoning, Logical Reasoning, Data Interpretation, Puzzles, Seating Arrangement, Coding-Decoding
18– General Awareness: Current Affairs, Indian History, Indian Polity, Indian Economy, Indian Geography, World Geography, Indian Constitution
19– Reasoning Ability: Blood Relations, Syllogism, Clocks & Calendars, Direction & Distance, Ordering & Ranking, Analogy, Series, Statement & Assumption, Statement & Conclusion, Statement
20– General Awareness: Science & Technology, Environment, Books & Authors, Awards & Honours, Sports, Art & Culture, Important Days, National & International Organizations

NOTE: Remember to adjust the plan according to your preferences and availability. Good luck with your preparation!

ISRO Scientist/Engineer (Mechanical)-Most Important Topics

Given below are the topics that you must give more importance to:

1Start by taking a FREE ISRO Scientist/Engineer (Mechanical) Mock Test & Cover All The Important Topics👈

Fluid Mechanics: Fluid properties; fluid statics, manometry, buoyancy, forces on submerged bodies, stability of floating bodies; differential equations of continuity and momentum; fluid acceleration; control-volume analysis of mass, momentum and energy;

Turbomachinery: Impulse and reaction principles, Pelton-wheel, Francis and Kaplan turbines, velocity diagrams.
2Thermodynamics: Thermodynamic systems and processes; zeroth and first laws of thermodynamics, the behavior of ideal and real gases, calculation of work and heat in various processes; properties of pure substances.
3Thermodynamics Applications:

Power Plant Engineering: Air and gas compressors; vapour and gas power cycles, Boilers, Steam Turbine, concepts of regeneration and reheat, Steam Nozzel, Steam Powerplant.

I.C. Engines: Air-standard Otto, Engine Cooling and Lubrication, IC Engine Performance and Testing, Diesel and dual cycles,.

Refrigeration and air-conditioning: Vapour and gas refrigeration and heat pump cycles; properties of moist air, basic psychrometric processes, psychrometric chart.

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Making the Most of Mock Tests: 10 Revision Tips for ISRO Mechanical Exam 2023

Preparing for the ISRO Mechanical Exam 2023 can be both challenging and rewarding. One essential tool in your preparation arsenal is mock tests. These simulated exams provide a glimpse into the actual test environment, helping you identify strengths and weaknesses. To make the most of these mock tests and optimize your revision strategy, consider the following tips:

1. Early Start, Consistent Practice

Begin your mock test preparation early. Consistent practice over an extended period is more beneficial than cramming. Schedule regular mock tests to assess your progress.

2. Simulate Exam Conditions

Replicate exam conditions as closely as possible during mock tests. Sit in a quiet room, adhere to time constraints, and eliminate distractions. This helps in building stamina and familiarizing yourself with exam pressures.

3. Analyze Mock Test Results

After each mock test, analyze your performance. Identify weak areas and focus on improving them. Understand the types of mistakes made, and use this information to guide your study plan.

4. Time Management

Practice time management during mock tests. Allocate specific time to each section and question. This helps in refining your strategy for the actual exam day, ensuring you complete all sections on time.

5. Subject-wise Revision

Utilize mock tests to assess your proficiency in each subject. Tailor your revision based on these assessments, dedicating more time to weaker subjects while maintaining proficiency in stronger ones.

6. Note Key Formulas and Concepts

While reviewing mock test solutions, jot down key formulas and concepts. Create a concise formula sheet that you can revise regularly. This aids in quick recall during the exam.

7. Revision in Phases

Divide your revision into phases. Initially, focus on broader concepts and gradually delve into specific details. This phased approach ensures a comprehensive understanding of the syllabus.

8. Regularly Update Study Material

Based on insights gained from mock tests, update your study material. Incorporate additional resources or clarify doubts on specific topics. Keeping your study material current enhances your understanding of the subjects.

9. Utilize Online Resources

Explore online platforms that offer additional practice tests and study materials. These resources can provide different perspectives on complex topics and aid in a more holistic understanding.

10. Seek Feedback

Engage with peers or mentors to discuss mock test performances. Share insights, clarify doubts, and gain different viewpoints. Constructive feedback is invaluable in refining your preparation strategy.

Free ISRO Scientist/Engineer Mechanical Mock Test

In conclusion, mock tests are indispensable tools for ISRO Mechanical Exam preparation. Following these revision tips can significantly enhance your performance. To further support your preparation, we’re excited to offer a free ISRO Scientist/Engineer Mechanical Mock Test. Avail this opportunity to assess your readiness, identify areas for improvement, and refine your strategy. Click here to take the free mock test and boost your confidence for the upcoming ISRO Mechanical Exam 2023.


Without an iota of doubt, this can be a golden opportunity to excel in your exams through the 20-day Mock Test challenge. Kickstart your preparation, boost your confidence, and take as many Mock Tests as possible. Practice with previous years’ question papers, test your skills with mock Tests and create concise notes for quick revision. Utilize short tricks and grasp important concepts. Remember, practice makes perfect.

    Free Mock Tests for the Upcoming Exams

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