Showing posts with label GATE. Show all posts
Showing posts with label GATE. Show all posts

Monday 21 July 2014

SAMPLE SHEET: GATE 2015; STRENGTH OF MATERIALS (MECHANICAL ENGINEERING)

CRACKGATE EDUCATION
House No: 237; Sector – 5; Chiranjeev Vihar, Ghaziabad
                     Contact No : #9555921800
PRACTICE WORKSHEET GATE-2015
MECHANICAL ENGINEERING
TOPIC: STRENGTH OF MATERIALS
Difficulty Level: 1
SET ONE: Each question has several entries, choose the most appropriate one

01)  The intensity of stress which causes unit strain is called
            a) unit stress                                                     b) bulk modulus
            c) modulus of elasticity                                               d) principal stress
02)  Which of the following materials has poisson’s ratio more than unity
            a) steel                                                                         b) copper
            c) cast iron                                                       d) none of these
03) The change in the unit volume of a material under tension with increase in its Poisson’s ratio will
            a) increase                                                       b) decrease
            c) increase initially and then decrease              d) remain same
04) In a tensile test, near the elastic zone, the tensile strain
            a) increases more quickly                                b) decreases more quickly
            c) increases in proportion to the stress                         d) increases more slowly
05) The stress necessary to initiate yielding is
            a) considerably greater than that necessary to continue it
            b) considerably lesser than that necessary to continue it
            c) remain same to continue it
            d) can’t be predicted
06) Flow stress corresponds to
            a) fluids in motion                                           b) breaking point
            c) plastic deformation of solids                                   d) rupture stress
07) The maximum strain energy that can be stored in a body is known as
            a) impact energy                                              b) resilience
            c) proof resilience                                            d) modulus of resilience
08) Thermal stress is always
            a) tensile                                                          b) compressive
            c) tensile or compressive                                 d) none of these
09) The loss of strength in compression due to overloading is known as
            a) hysteresis                                                     b) relaxation
            c) creep                                                            d) Bouschinger effect
10) If a material expands freely due to heating, it will develop
            a) thermal stress                                               b) lateral stress
            c) creep stress                                                  d) no stress


SAMPLE SHEET: GATE 2015; FLUID MECHANICS (MECHANICAL ENGINEERING)

CRACKGATE EDUCATION
House No: 237; Sector – 5; Chiranjeev Vihar, Ghaziabad
                     Contact No : 09678534833; 09555921800
PRACTICE WORKSHEET GATE-2015
MECHANICAL ENGINEERING
TOPIC: FLUID MECHANICS
Difficulty Level: 1
SET ONE: Each question has several entries, choose the most appropriate one

01) If no resistance is encountered due to displacement then such a substance is called
            a) fluid               b) real gas                 c) ideal fluid          d) visco-elastic fluid

02) The volumetric change of a fluid due to a resistance is called as
            a) volumetric strain,                             b) volumetric index
            c) compressibility                                d) cohesion

03) Mercury does not wet glass due to a property of liquids known as
            a) adhesion                                          b) cohesion
            c) viscosity                                          d) surface tension

04) The surface tension of Mercury at normal temperature compared to that of water is
            a) more                                                          b) less
            c) depends upon the glass tube                        d) equal

05) Kinematic viscosity is dependent upon
            a) pressure       b) distance       c) density         d) flow

06) Alcohol is used in manometers because
            a) it is clearly visible                            b) it provides suitable meniscus
            c) it can provide longer column due to its low density
            d) it has low surface tension

07) The buoyancy depends upon
            a) mass of liquid displaced                  b) viscosity of the liquid
            c) pressure of the displaced liquid       d) none of the above

08) The centre of gravity of the volume of the liquid displaced by an immersed body is called
            a) meta-centre                                      b) centre of gravity
            c) centre of pressure                            d) centre of buoyancy

09) Surface energy per unit area of a surface is numerically equal to
            a) atmospheric pressure                                   b) surface tension
            c) force of cohesion                                         d)  viscosity

10) Flow occurring in a pipeline when a valve is being opened is
            a) steady flow                                                 b) unsteady flow
            c) laminar flow                                                d) vortex flow

For answers contact at 09555921800

Thursday 17 July 2014

SAMPLE SHEET: GATE 2015; THERMODYNAMICS (MECHANICAL ENGINEERING)

CRACKGATE EDUCATION
House No: 237; Sector – 5; Chiranjeev Vihar, Ghaziabad
                     Contact No : #9555921800
PRACTICE WORKSHEET GATE-2015
MECHANICAL ENGINEERING
TOPIC: BASIC THERMODYNAMICS
Difficulty Level: 1
SET ONE: Each question has several entries, choose the most appropriate one

01) Gas laws are applicable to
            a) Gases as well as vapours     b) Gases alone and not applicable to vapours
            c) Gases and Steam                  d) Gases and Superheated vapours

02) An ideal gas compared to a real gas at very high pressures occupies
            a) more volume           b) less volume            
c) same volume           d) can’t be predicted

03) Temperature of a gas is produced due to
            a) its heating value                   b) kinetic energy of the molecules
            c) molecular vibration              d) inter-molecular attractions

04)  According to kinetic theory of gases, the absolute zero temperature is attained when
            a) volume of the gas is zero                             b) pressure of the gas is zero
            c) kinetic energy of the molecule is zero                     d)  specific heat is zero 

05)  The quantity δQ – δW; where δQ is elemental heat transfer and δW is the elemental work    
transfer is
            a) path function                       b) point function
            c) cyclic function                     d) in-exact differential

06)  The workdone in an adiabatic process between a given pair of end states depends on
            a) the values of the endstates only,      b) the end states and specific heat ratio  γ
            c) the end states and polytropic index n,          d) none of the above.

07)  If the value of polytropic index n is high, then the compressor work between given pressure limits will be
            a) less                                      b) more
            c) no effect                              d) zero

08)  A perfect gas at 27oC is heated at constant pressure till its volume becomes double. The final temperature will be
            a) 54oC                                    b) 327oC
            c) 108oC                                  d) 600oC
09)  Mixing of ice and water at 0oC at atmospheric pressure is an example of
            a) reversible process                b) irreversible process
            c) quasi-static process              d) isentropic process
10)  Change in enthalpy in a closed system is equal to heat transferred if the reversible process takes place at constant
            a) pressure                               b) temperature

            c) volume                                d) entropy

Tuesday 15 July 2014

GATE 2015: MECHANICAL ENGINEERING COACHING IN CHIRANJEEV VIHAR AND GOVINDPURAM GHAZIABAD

GATE 2015
MECHANICAL ENGINEERING COACHING IN
CHIRANJEEV VIHAR AND GOVINDPURAM

THE SALIENT POINTS OF THE COURSE:

  • THE COURSE HAS BEEN DESIGNED TO HELP THOSE STUDENTS WHO HAVE DIFFICULTIES IN THE BASIC CONCEPTS.
  • AT FIRST THE BASIC CONCEPTS WOULD BE TAUGHT AND THEN ADVANCED CONCEPTS WILL BE INTRODUCED.
  • WHILE TEACHING A CONCEPT, SIMULTANEOUSLY MULTIPLE CHOICES QUESTIONS WILL BE SHOWN FROM THAT CONCEPT.
  • MORE THAN 2500 MULTIPLE CHOICES QUESTIONS WILL BE DISCUSSED WITH SOLUTIONS.
  • PROBLEM SOLVING TECHNIQUES WOULD BE TAUGHT WITH THE HELP OF MASTER CHARTS.
  • TWO HOURS PER DAY SIX DAYS PER WEEK CLASSES.
  • CLASSES ON IMPROVING LEARNING ABILITIES, INCREASING CONCENTRATION AND THE SCIENTIFIC STUDYING TECHNIQUES WILL BE TAKEN.
  • CONCEPTS WOULD BE TAUGHT USING ANIMATIONS, GRAPHS, PICTOGRAMS, MNEMONICS AND OTHER LEARNING ENHANCEMENT TOOLS.
  • ONLY 20 STUDENTS PER BATCH TO FOCUS MORE ON THE INDIVIDUAL NEEDS OF THE STUDENTS.
  • ASSISTANCES FOR INDIVIDUAL PSU (LIKE ONGC, IOC etc.)
  • TRIAL CLASSES ARE THERE TO BE AWARE OF THE PERFORMANCES OF THE CLASSES.
  • HIGH TECH STUDY MATERIALS AT AFFORDABLE PRICE.
  • COURSE DURATION IS SIX MONTHS.
  • INTRODUCTORY PRICES ARE AS LOW AS @₨ 2500 PER MONTH
  • CLASSES WILL BE STARTED FROM 25th JULY; 2014
  • CALL AT # +91-9458042791; +91-9555921800; +91-9678534833

CRACKGATE EDUCATION
House No: 237; Sector – 5; Chiranjeev Vihar, Ghaziabad
                     Contact No : +91-9458042791; +91-9555921800; +91-9678534833


Monday 27 August 2012

SYLLABUS OF GATE 2013; MECHANICAL ENGINEERING


Syllabus for Mechanical Engineering (ME)


1) ENGINEERING MATHEMATICS

a) Linear Algebra : Matrix algebra, Systems of linear equations, Eigen values and eigen vectors.

b) Calculus : Functions of single variable, Limit, continuity and differentiability, Mean value theorems, Evaluation of definite and improper integrals, Partial derivatives, Total derivative, Maxima and minima, Gradient, Divergence and Curl, Vector identities, Directional derivatives, Line, Surface and Volume integrals,Stokes, Gauss and Green’s theorems.

c) Differential equations : First order equations (linear and nonlinear), Higher order linear differential equations with constant coefficients, Cauchy’s and Euler’s equations, Initial and boundary value problems, Laplace transforms, Solutions of one dimensional heat and wave equations and Laplace equation.

d) Complex variables : Analytic functions, Cauchy’s integral theorem, Taylor and Laurent series.

e) Probability and Statistics : Definitions of probability and sampling theorems, Conditional probability, Mean, median, mode and standard deviation, Random variables, Poisson,Normal and Binomial distributions.

f) Numerical Methods : Numerical solutions of linear and non-linear algebraic equations Integration bytrapezoidal and Simpson’s rule, single and multi-step methods for differential equations.


2) APPLIED MECHANICS AND DESIGN

a) Engineering Mechanics: Free body diagrams and equilibrium; trusses and frames; virtual work; kinematics and dynamics of particles and of rigid bodies in plane motion, including impulse and momentum (linear and angular) and energy formulations; impact.

b) Strength of Materials: Stress and strain, stress-strain relationship and elastic constants, 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; Euler’s theory of columns; strain energy methods; thermal stresses.

c) Theory of Machines: Displacement,velocity and acceleration analysis of plane mechanisms; dynamic analysis of slider-crank mechanism; gear trains; flywheels.

d) Vibrations: Free and forced vibration of single degree of freedom systems; effect of damping; vibration isolation; resonance, critical speeds of shafts.

e) 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, spur gears, rolling and sliding contact bearings, brakes and clutches.


3) FLUID MECHANICS AND THERMAL SCIENCES

a) Fluid Mechanics: Fluid properties; fluid statics, manometry, buoyancy; control-volume analysis of mass, momentum and energy; fluid acceleration; differential equations of continuity and momentum; Bernoulli’s equation; viscous flow of incompressible fluids; boundary layer; elementary turbulent flow; flow through pipes,head losses in pipes, bends etc.

b) Heat-Transfer: Modes of heat transfer; one dimensional heat conduction, resistance concept, electrical analogy, unsteady heat conduction, fins; dimensionless parameters in free and forced convective heat transfer, various correlations for heat transfer in flow over flat plates and through pipes; thermal boundary layer; effect of turbulence; radiative heattransfer, black and grey surfaces, shape factors, network analysis; heat exchanger performance, LMTD and NTU methods.

c) Thermodynamics: Zeroth, First and Second laws of thermodynamics; thermodynamic system and processes; Carnot cycle.irreversibility and availability; behaviour of ideal andreal gases, properties of pure substances, calculation of work and heat in ideal processes; analysis of thermodynamic cycles related to energy conversion.

d) Applications: Power Engineering : Steam Tables, Rankine, Brayton cycles with regeneration and reheat. I.C. Engines : air-standard Otto, Diesel cycles.

e) Refrigeration and air-conditioning: Vapour refrigeration cycle, heat pumps, gas refrigeration, Reverse Brayton cycle;

f) Moist air: psychrometric chart, basic psychrometric processes.

g) Turbo-machinery: Pelton-wheel, Francis and Kaplan turbines— impulse and reaction principles, velocity diagrams.


4) MANUFACTURING AND INDUSTRIAL ENGINEERING

a) Engineering Materials: Structure and properties of engineering materials, heat treatment, stress-strain diagrams for engineering materials.

b) Metal Casting: Design of patterns, moulds and cores; solidification and cooling; riser and gating design, design considerations.

c) Forming: Plastic deformation and yield criteria; fundamentals of hot and cold working processes; load estimation for bulk (forging, rolling, extrusion, drawing) and sheet (shearing, deep drawing, bending) metal forming processes;principles of powder metallurgy.

d) Joining: Physics of welding, brazing and soldering; adhesive bonding; design considerations in welding.

e) Machining and Machine Tool Operations: Mechanics of machining, single and multi-point cutting tools, tool geometry and materials, tool life and wear; economics of machining; principlesof non-traditional machining processes; principles of work holding, principles of design of jigs and fixtures

f) Metrology and Inspection: Limits, fits and tolerances; linear and angular measurements; comparators; gauge design; interferometry; form and finish measurement; alignment and testing methods; tolerance analysis in manufacturing and assembly.

g) Computer Integrated Manufacturing: Basic concepts of CAD/CAM and their integration tools.

h) Production Planning and Control: Forecasting models, aggregate production planning, scheduling, materials requirement planning.

i) Inventory Control: Deterministic and probabilistic models; safety stock inventory control systems.

j) Operations Research: Linear programming, simplex and duplex method, transportation, assignment, network flow models, simple queuing models, PERT and CPM.