Key Topics to Score More in GATE (Mechanical)

GATE, like any other competitive examination, demands selective study. If one is appearing for GATE Mechanical examination, there are a few topics which must not be missed. Meticulous planning and conceptual clarity on the following topics can help improve a candidates’ rank by several notches.

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1

Engineering mechanics

Equilibrium of rigid bodies, structural analysis, Impulse and momentum, Rectilinear kinematics, Work and Energy, Law of Restitution

2.

Strength of Materials

Stress and strain, Theory of bending, Beam deflection, Torsion in shafts, Bi-axial stress and strain, Mohr’s circle, Thin-walled shells, Equilibrium, Struts and columns

3.

Theory of Machines

Mechanisms and machines, Flywheel, Friction, Gears, Kinematic analysis

4.

Vibrations

Undamped vibrations, Free damped vibrations, Forced vibrations

5.

Design

Static loading, Dynamic loading, Threaded joints, Riveted joints, Welded joints, Design of gears, Belt drives/brakes, bearings

6.

Fluid Mechanics

Fluid properties, Fluid pressure, Flow measurements, Kinematics of fluid flow, Principles of fluid flow, Laminar pipe flow, Boundary layer theory

7.

Heat Transfer

Conduction, Convection, Radiation, Heat exchangers

8.

Thermodynamics

Basic concepts, First law, Second law, Exergy and irreversibility, Properties of gases, Gas compression, Brayton cycle

9.

Applications

IC engines, Refrigeration and air-conditioning, turbo machinery, Power engineering

10.

Material science

Heat treatment of steel, Iron-carbon phase, mechanical properties, Crystal structure, Effect of imperfections

11.

Casting

Gating system, Casting defects, Pattern

12.

Forming

Rolling, Extrusion, Sheet metal forming, forging, Modern forming processes

13.

Welding

Welding processes

14.

Machining

Mechanism of metal cutting, Machining processes, Machinability, Modern machining processes

15.

Metrology

Limits, tolerances and fits, Linear measurements, Gauge design

16.

Computer Integrated Manufacturing

Computer aided design, Numerical control

17.

PPC

Forecasting, Break-even analysis, Assembly line balancing, Functions of PPC, MRP

18.

Inventory Control

Basic concepts, EOQ models,

19.

Operation Research

Simplex method, Transportation problems, Queuing, Sequencing, PERT and CPM, Break-even analysis

 

Students must attain conceptual clarity on these core concepts and practice to solve questions corresponding to them. They should solve questions of different varieties and levels from a list of carefully chosen reference sources, e.g., textbooks, reference guide books, on-line quizzes, mock tests, etc. Key theoretical concepts can be cracked by drawing a correlating diagram of different mechanical systems. This also comes in handy while solving numerical problems.

 AK

Author: AJAY KUMAR TAMRAKAR
B.E.(GEC Rewa), M.Tech.(IISc B'lore), IRSME
Ajay Kumar Tamrakar is currently serving Indian Railways as Senior Divisional Mechanical Engineer under the prestigious cadre of Indian Railway’s Services of Mechanical Engineers (IRSME).

Author of ‘Wiley Acing the GATE Mechanical Engineering



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