## Important Topics For GATE Mechanical Engineering

Following Topics are very important for GATE Examination

#### Subject wise Priority List

• Mathematics
• Manufacturing Science
• Industrial Engineering
• SOM
• TOM
• Design
• Thermodynamics
• Fluid Mechanics
• Heat Transfer
• RAC
• Power plant
• IC Engine
• Engineering Materials
• Engineering Mechanics

### Mathematics

• Probability and Statistics
• Eigen Values and Eigen Vectors
• Differential Equations
• Transform Theory
• Numerical Methods
• Calculus, Gradient, Multiple Integrals
• Complex Variables
• Matrix Algebra
• Fourier Series
• Partial Derivatives

### Manufacturing Science

• Theory of metal cutting, forces, tool life
• Rolling calculations
• Wire drawing and Extrusion Calculations
• Sheet metal operations, clearance, force, power, shear calculations
• Lathe, drilling, milling, shaping cutting time calculations
• Grinding and finishing
• ECM MRR, feed calculations, EDM theory, comparison of all NTMM
• NC, CNC, Machine, BLU calculations, upto M & G code
• Limit, tolerance, fit
• Jig & Fixture, 3-2-1 principle
• Welding: V-I Characteristics calculations, Resistance welding calculations
• Casting: allowances, Riser Design, Sprue Design, Pouring time calculations, Special Castings

### Industrial Engineering

• EOQ Models (VIMP)
• PERT & CPM (VIMP)
• Queuing Model (VIMP)
• Forecasting (VIMP)
• LPP
• Work Study & Work Measurement (standard time calculations, theriblings symbol) g) Break even Analysis
• The Scheduling Problem and Johnson’s Rule
• Assembly line balancing

### SOM

• Principal Stress and Strain (VIMP)
• Stress and Strain (VIMP)
• Bending Moment and Shear Force Diagram (VIMP)
• Torsion
• Riveted and Welded Joint
• Spring
• Theories of Column (Euler method, end conditions)
• Strain Energy Method (Castigliano’s theory)
• Theories of failure
• Thin and Thick cylinder

### TOM

• Mechanism (VIMP)
• Linear Vibration Analysis of Mechanical Systems (VIMP)
• Gear train (VIMP)
• Flywheel (Coefficient of Fluctuation of speed, Coefficient of Fluctuation of energy)
• Design
• Rolling Contact Bearings, Load-life Relationship
• Sliding contact bearing, Modes of Lubrication, Sommerfeld Number
• Fluctuating Load Consideration for Design
• Clutch , Brake

### Thermodynamics

• Basic Concepts
• Application of First law
• Entropy, Availability
• Pure Substance (VIMP)
• Gases and Gas mixture
• Thermodynamics relations

### Fluid Mechanics

• Properties of fluid
• Pressure measurement, manometers
• Fluid kinematics (VIMP)
• Bernoulli’s Equation
• Venturimeter
• Boundary Layer, Thermal Boundary Layer
• Compressible Flow
• Hydraulic Turbine
• Centrifugal Pump

### Heat Transfer

• Conduction
• Critical Thickness of Insulation
• Unsteady Conduction (Lumped Parameter Analysis)
• Heat Exchangers (LMTD, NTU)
• Radiation (The Stefan-Boltzmann Law, Shape Factor Algebra, Heat Exchange between Nonblack Bodies)

### RAC

• Heat engine, heat pump, refrigerator (VIMP)
• Vapour Compression Systems
• Psychrometry (VIMP)

### Power plant

• Steam Cycle (VIMP)
• Gas Cycle
• Compressor

### IC Engine

• Gas Power Cycles (All) (VIMP)
• IC Engine Performances
• Octane number, cetane number

### Engineering materials

• Iron-carbon Equilibrium diagram, TTT diagram,
• Heat treatment,
• Crystal structure & crystal defects

• Equilibrium
• Truss