GATE 2011 : Examination Syllabus
AG-Agricultural Engineering ::
Linear Algebra: Matrices and Determinants, Systems of linear equations,
Eigen values and eigen vectors.
Calculus: Limit, continuity and differentiability; Partial Derivatives;
Maxima and minima; Sequences and series; Test for convergence; Fourier
Vector Calculus: Gradient; Divergence and Curl; Line; surface and volume
integrals; Stokes, Gauss and Green's theorems.
Differential Equations: Linear and non-linear first order ODEs; Higher order
linear ODEs with constant coefficients; Cauchy's and Euler's equations;
Laplace transforms; PDEs - Laplace, heat and wave equations.
Probability and Statistics: Mean, median, mode and standard deviation;
Random variables; Poisson, normal and binomial distributions; Correlation
and regression analysis.
Numerical Methods: Solutions of linear and non-linear algebraic equations;
integration of trapezoidal and Simpson's rule; single and multi-step methods
for differential equations.
FARM MACHINERY AND POWER
Sources of power on the farm-human, animal, mechanical, electrical, wind,
solar and biomass; bio-fuels; design and selection of machine elements -
gears, pulleys, chains and sprockets and belts; overload safety devices used
in farm machinery; measurement of force, torque, speed, displacement and
acceleration on machine elements.
Soil tillage; forces acting on a tillage tool; hitch systems and hitching of
tillage implements; mechanics of animal traction; functional requirements,
principles of working, construction and operation of manual, animal and
power operated equipment for tillage, sowing, planting, fertilizer
application, inter-cultivation, spraying, mowing, chaff cutting, harvesting,
threshing and transport; testing of agricultural machinery and equipment;
calculation of performance parameters -field capacity, efficiency,
application rate and losses; cost analysis of implements and tractors
Thermodynamic principles of I.C. engines; I.C. engine cycles; engine
components; fuels and combustion; lubricants and their properties; I.C.
engine systems - fuel, cooling, lubrication, ignition, electrical, intake
and exhaust; selection, operation, maintenance and repair of I.C. engines;
power efficiencies and measurement; calculation of power, torque, fuel
consumption, heat load and power losses.
Tractors and power tillers - type, selection, maintenance and repair;
tractor clutches and brakes; power transmission systems - gear trains,
differential, final drives and power take-off; mechanics of tractor chassis;
traction theory; three point hitches- free link and restrained link
operations; mechanical steering and hydraulic control systems used in
tractors; human engineering and safety in tractor design; tractor tests and
SOIL AND WATER CONSERVATION ENGINEERING
Ideal and real fluids, properties of fluids; hydrostatic pressure and its
measurement; hydrostatic forces on plane and curved surface; continuity
equation; Bernoulli's theorem; laminar and turbulent flow in pipes, Darcy-
Weisbach and Hazen-Williams equations, Moody's diagram; flow through
orifices and notches; flow in open channels.
Engineering properties of soils; fundamental definitions and relationships;
index properties of soils; permeability and seepage analysis; shear
strength, Mohr's circle of stress, active and passive earth pressures;
stability of slopes.
Hydrological cycle; meteorological parameters and their measurement,
analysis of precipitation data; abstraction from precipitation; runoff;
hydrograph analysis, unit hydrograph theory and application; stream flow
measurement; flood routing, hydrological reservoir and channel routing.
Measurement of distance and area; chain surveying, methods of traversing;
measurement of angles and bearings, plane table surveying; types of
levelling; contouring; instruments for surveying and levelling; computation
of earth work.
Mechanics of soil erosion, soil erosion types; wind and water erosion;
factors affecting erosion; soil loss estimation; biological and engineering
measures to control erosion; terraces and bunds; vegetative waterways; gully
control structures, drop, drop inlet and chute spillways; earthen dams;
water harvesting structures, farm ponds, watershed management.
Soil-water-plant relationship, water requirement of crops; consumptive use
and evapotranspiration; irrigation scheduling; irrigation efficiencies;
design of irrigation channels; measurement of soil moisture, irrigation
water and infiltration; surface, sprinkler and drip methods of irrigation;
design and evaluation of irrigation methods.
Drainage coefficient; planning, design and layout of surface and sub-surface
drainage systems; leaching requirement and salinity control; irrigation and
drainage water quality.
Groundwater occurrence confined and unconfined aquifers, evaluation of
aquifer properties; well hydraulics; groundwater recharge.
Classification of pumps; pump characteristics; pump selection and
AGRICULTURAL PROCESSING AND FOOD ENGINEERING
Steady state heat transfer in conduction, convection and radiation;
transient heat transfer in simple geometry; condensation and boiling heat
transfer; working principles of heat exchangers; diffusive and convective
mass transfer; simultaneous heat and mass transfer in agricultural
Material and energy balances in food processing systems; water activity,
sorption and desorption isotherms; centrifugal separation of solids, liquids
and gases; kinetics of microbial death - pasteurization and sterilization of
liquid foods; preservation of food by cooling and freezing; refrigeration
and cold storage basics and applications; psychrometry - properties of air-vapour
mixture; concentration and drying of liquid foods - evaporators, tray, drum
and spray dryers.
Mechanics and energy requirement in size reduction of granular solids;
particle size analysis for comminuted solids; size separation by screening;
fluidization of granular solids-pneumatic, bucket, screw and belt conveying;
cleaning and grading; Effectiveness of grain cleaners.
Hydrothermal treatment, drying and milling of cereals, pulses and oilseeds;
Processing of seeds, spices, fruits and vegetables; By-product utilization
from processing industries.
Controlled and modified atmosphere storage; Perishable food storage, godowns,
bins and grain silos.