DSSSB Recruitment 2018- 6016 Teacher, Pharmacist and Other Posts- Apply Online

DSSSB Recruitment 2018- Delhi Subordinate Services Selection Board

Complete Details of this notification is given below-

Post Name- 
DSSSB Teacher

Total no. of Vacancies in DSSSB Teacher Recruitment 2018- 
4366 post

Important Dates for DSSSB Teacher Recruitment 2018- 
Starting Date to apply online- 2 July 2018
Last Date to apply online – 30 July 2018

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RRC Central Railway Recruitment 2018 (Apprentice Vacancies 2018)

Application Fee for DSSSB Teacher Recruitment 2018-  
General, OBC – Rs.100/-
SC, ST, PH, Ex Serviceman candidates – No Fee

GATE 2019 Details and Notification, Exam Date, Paper Pattern, Marking Scheme etc.

This Post describes all the details regarding GATE 2019. Here you will know the GATE 2019 Paper Pattern, GATE 2019 exam date and which IIT has set the paper of GATE 2019. Other things that you will get here are- GATE 2019 marks distribution along with the marking scheme of the paper for GATE 2019. 
You will get details of GATE 2019 paper sections and their weight-age, total number of questions and duration of the exam. Information about negative markings is also provided here.
So let's see all the details about GATE 2019- 

GATE 2019 Details

GATE exam 2019 will be conducted tentatively in the first and second week of February 2019. The mode of examination will be online. The exam will be conducted for total 23 papers. GATE 2019 exam will include both multiple choice and numerical answer type questions and will be of 3 hours duration. The paper will be of 100 marks. The general aptitude part will be common to each paper. 
So now let's discuss the exam pattern of GATE 2019 in detail-

GATE 2019 Syllabus for General Aptitude (GA), Download PDF Syllabus

Verbal Ability: 

English grammar, sentence completion, verbal analogies, word groups, instructions, critical reasoning and verbal deduction.

Numerical Ability: 

Numerical computation, numerical estimation, numerical reasoning and data interpretation.

Sample Questions

Verbal Ability
Q.1. Choose the appropriate answer to complete the following sentence:
To those of us who had always thought him timid, his --------- came as a surprise.
(A) intrepidity (B) inevitability (C) inability (D) inertness
Ans. (A)

GATE 2019 Syllabus for Civil Engineering (CE), Download PDF Syllabus

Section 1: Engineering Mathematics

Linear Algebra: Matrix algebra; Systems of linear equations; Eigen values and Eigen vectors.
Calculus: Functions of single variable; Limit, continuity and differentiability; Mean value theorems, local maxima and minima, Taylor and Maclaurin series; Evaluation of definite and indefinite integrals, application of definite integral to obtain area and volume; Partial derivatives; Total derivative; Gradient, Divergence and Curl, Vector identities, Directional derivatives, Line, Surface and Volume integrals, Stokes, Gauss and Green’s theorems.
Ordinary Differential Equation (ODE): First order (linear and non-linear) equations; higher order linear equations with constant coefficients; Euler-Cauchy equations; Laplace transform and its application in solving linear ODEs; initial and boundary value problems.
Partial Differential Equation (PDE): Fourier series; separation of variables; solutions of onedimensional
diffusion equation; first and second order one-dimensional wave equation
and two-dimensional Laplace equation.
Probability and Statistics: Definitions of probability and sampling theorems; Conditional probability; Discrete Random variables: Poisson and Binomial distributions; Continuous random variables: normal and exponential distributions; Descriptive statistics - Mean, median, mode and standard deviation; Hypothesis testing.
Numerical Methods: Accuracy and precision; error analysis. Numerical solutions of linear and non-linear algebraic equations; Least square approximation, Newton’s and Lagrange polynomials, numerical differentiation, Integration by trapezoidal and Simpson’s rule, single and multi-step methods for first order differential equations.

Section 2: Structural Engineering

Engineering Mechanics: System of forces, free-body diagrams, equilibrium equations; Internal forces in structures;

GATE 2019 Syllabus for CSE/ CS (Computer Science and Information Technology), Download PDF Syllabus

Section1: Engineering Mathematics
Discrete Mathematics: Propositional and first order logic. Sets, relations, functions, partial orders and lattices. Groups. Graphs: connectivity, matching, coloring. Combinatorics: counting, recurrence relations, generating functions.
Linear Algebra: Matrices, determinants, system of linear equations, eigenvalues and eigenvectors, LU decomposition.
Calculus: Limits, continuity and differentiability. Maxima and minima. Mean value theorem. Integration.
Probability: Random variables. Uniform, normal, exponential, poisson and binomial distributions. Mean, median, mode and standard deviation. Conditional probability and Bayes theorem.

Computer Science and Information Technology

Section 2: Digital Logic
Boolean algebra. Combinational and sequential circuits. Minimization. Number representations and computer arithmetic (fixed and floating point).

GATE 2019 Syllabus for Chemical Engineering (CH), Download PDF Syllabus

Section 1: Engineering Mathematics 

Linear Algebra: Matrix algebra, Systems of linear equations, Eigen values and eigenvectors. Calculus: Functions of single variable, Limit, continuity and differentiability, Taylor series, 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. 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. Complex variables: Complex number, polar form of complex number, triangle inequality. Probability and Statistics: Definitions of probability and sampling theorems, Conditional probability, Mean, median, mode and standard deviation, Random variables, Poisson, Normal and Binomial distributions, Linear regression analysis. Numerical Methods: Numerical solutions of linear and non-linear algebraic equations. Integration by trapezoidal and Simpson’s rule. Single and multi-step methods for numerical solution of differential equations. 

Section 2: Process Calculations and Thermodynamics 

Steady and unsteady state mass and energy balances including multiphase, multicomponent, reacting and non-reacting systems. Use of tie components; recycle, bypass and purge calculations; Gibb’s phase rule and degree of freedom analysis. First and Second laws of thermodynamics. Applications of first law to close and open systems. Second law and Entropy. Thermodynamic properties of pure substances: Equation of State and residual properties, properties of mixtures: partial molar properties, fugacity, excess properties and activity coefficients; phase equilibria: predicting VLE of systems; chemical reaction equilibrium. 

Section 3: Fluid Mechanics and Mechanical Operations 

Fluid statics, Newtonian and non-Newtonian fluids, shell-balances including differential form of Bernoulli equation and energy balance, Macroscopic friction factors, dimensional analysis and similitude, flow through pipeline systems, flow meters, pumps and compressors, elementary boundary layer theory, flow past immersed bodies including packed and fluidized beds, Turbulent flow: fluctuating velocity, universal velocity profile and pressure drop. Particle size and shape, particle size distribution, size reduction and classification of solid particles; free and hindered settling; centrifuge and cyclones; thickening and classification, filtration, agitation and mixing; conveying of solids. 

GATE 2019 Syllabus for ME (Mechanical Engineering), Download PDF Syllabus

Section 1: Engineering Mathematics

Linear Algebra: Matrix algebra, systems of linear equations, eigenvalues and eigenvectors.
Calculus: Functions of single variable, limit, continuity and differentiability, mean value theorems, indeterminate forms; evaluation of definite and improper integrals; double and triple integrals; partial derivatives, total derivative, Taylor series (in one and two variables), maxima and minima, Fourier series; gradient, divergence and curl, vector identities, directional derivatives, line, surface and volume integrals, applications of Gauss, Stokes and Green’s theorems.
Differential equations: First order equations (linear and nonlinear); higher order linear differential equations with constant coefficients; Euler-Cauchy equation; initial and boundary value problems; Laplace transforms; solutions of heat, wave and
Laplace's equations.
Complex variables: Analytic functions; Cauchy-Riemann equations; Cauchy’s integral theorem and integral formula; Taylor and Laurent series.
Probability and Statistics: Definitions of probability, sampling theorems, conditional 
probability; mean, median, mode and standard deviation; random variables, binomial, Poisson and normal distributions.
Numerical Methods: Numerical solutions of linear and non-linear algebraic equations; integration by trapezoidal and Simpson’s rules; single and multi-step methods for differential equations.

Section 2: Applied Mechanics and Design

Engineering Mechanics: Free-body diagrams and equilibrium; trusses and frames; virtual work; kinematics and dynamics of particles and of rigid bodies in plane motion; impulse and momentum (linear and angular) and energy formulations,
collisions.
Mechanics 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; Euler’s theory of columns; energy methods; thermal stresses; strain gauges and rosettes; testing of materials with universal testing machine; testing of hardness and impact strength.

GATE 2019 Syllabus for Electrical Engineering (EE) Download PDF Syllabus

Section 1: Engineering Mathematics

Linear Algebra: Matrix Algebra, Systems of linear equations, Eigenvalues, Eigen vectors.
Calculus: Mean value theorems, Theorems of integral calculus, Evaluation of definite and improper integrals, Partial Derivatives, Maxima and minima, Multiple integrals, Fourier series, Vector identities, Directional derivatives, Line integral, Surface integral, Volume integral, Stokes’s theorem, Gauss’s theorem, Green’s theorem.
Differential equations: First order equations (linear and nonlinear), Higher order linear differential equations with constant coefficients, Method of variation of parameters, Cauchy’s equation, Euler’s equation, Initial and boundary value problems, Partial
Differential Equations, Method of separation of variables.
Complex variables: Analytic functions, Cauchy’s integral theorem, Cauchy’s integral formula, Taylor series, Laurent series, Residue theorem, Solution integrals.
Probability and Statistics: Sampling theorems, Conditional probability, Mean, Median, Mode, Standard Deviation, Random variables, Discrete and Continuous distributions, Poisson distribution, Normal distribution, Binomial distribution, Correlation analysis, Regression analysis.
Numerical Methods: Solutions of nonlinear algebraic equations, Single and Multi‐step
methods for differential equations.
Transform Theory: Fourier Transform, Laplace Transform, z‐Transform.

Section 2: Electric Circuits

Network graph, KCL, KVL, Node and Mesh analysis, Transient response of dc and ac networks, Sinusoidal steady‐state analysis, Resonance, Passive filters, Ideal current and voltage sources, Thevenin’s theorem, Norton’s theorem, Superposition theorem, Maximum power transfer theorem, Two‐port networks, Three phase circuits, Power and power factor in ac circuits.

GATE 2019 Syllabus for ECE (EC) Electronics and Communication, Download PDF Syllabus

Section 1: Engineering Mathematics

Linear Algebra: Vector space, basis, linear dependence and independence, matrix algebra, eigen values and eigen vectors, rank, solution of linear equations–existence and uniqueness.
Calculus: Mean value theorems, theorems of integral calculus, evaluation of definite and improper integrals, partial derivatives, maxima and minima, multiple integrals, line, surface and volume integrals, Taylor series.
Differential Equations: First order equations (linear and nonlinear), higher order linear differential equations, Cauchy's and Euler's equations, methods of solution using variation of parameters, complementary function and particular integral, partial differential equations, variable separable method, initial and boundary value problems.
Vector Analysis: Vectors in plane and space, vector operations, gradient, divergence and curl, Gauss's, Green's and Stoke's theorems.
Complex Analysis: Analytic functions, Cauchy's integral theorem, Cauchy's integral formula; Taylor's and Laurent's series, residue theorem.
Numerical Methods: Solution of nonlinear equations, single and multi-step methods for
differential equations, convergence criteria.
Probability and Statistics: Mean, median, mode and standard deviation; combinatorial probability, probability distribution functions - binomial, Poisson, exponential and normal; Joint and conditional probability; Correlation and regression analysis.

Section 2: Networks, Signals and Systems

Network solution methods: Nodal and mesh analysis; Network theorems: superposition,
Thevenin and Norton’s, maximum power transfer; Wye‐Delta transformation; Steady state sinusoidal analysis using phasors; Time domain analysis of simple linear circuits; Solution of network equations using Laplace transform; Frequency domain analysis of RLC circuits
Linear 2‐port network parameters: driving point and transfer functions; State equations for
networks.

Low Level and High Level Modulation Block Diagram (AM Transmitter Block Diagram)

This post is about the generation of amplitude modulation. Here we will see two different ways of generating Amplitude Modulation (AM).
So the generation of amplitude modulation (AM) can be of following two types-

Types of Amplitude Modulation Generation

Low level Amplitude Modulation
High level Amplitude Modulation

Watch the Complete Video Here-

 

Here we will understand the difference between these two types of techniques of generation of AM, with the help of block diagrams-

Low Level Amplitude Modulation (Block Diagram)

The image given below shows the block diagram of a Low Level Amplitude Modulation

Block Diagram of Low Level Amplitude Modulation 

Now observe the image carefully-
This block diagram shows 3 main blocks-
#Low level AM modulator
#Wideband power amplifier and
#RF carrier oscillator

As you can see in the diagram that low level AM modulator has two inputs. At its first input we apply the modulating signal source (message signal) and it's second input is supplied by the RF carrier oscillator.
Since it is low level amplitude modulation therefore before applying the modulating signal to the low level AM modulator, we do not amplify it. In the same way, RF carrier is also not amplified.
Therefore you observe here that in low level AM modulation, neither the modulating signal nor the RF carrier is amplified before applying to low level AM modulator.

Block Diagram of CRO (Cathode Ray Oscilloscope), Components of CRO and CRT with Structure and Working

In this post we will learn what is a Cathode Ray Oscilloscope. In short we call it as CRO. Here we will discuss the block diagram and working of CRO. Functioning of each block of CRO will be explained here in detail. 
Before understanding the structure and working of the cathode ray oscilloscope, let's see applications of CRO.

Watch the Complete Video Here-

Applications of Cathode Ray Oscilloscope (CRO)

#CRO can be used for measuring voltage
#For measuring current
#For measuring phase and frequency of the signal
and 
#For analyzing the waveform of the signal in various ways

Components of Cathode Ray Oscilloscope (CRO)

Observe the image shown below-

Block Diagram of Cathode Ray Oscilloscope (CRO)

#Cathode Ray Tube (CRT)
#Vertical amplifier
#Delay line
#Trigger circuit
#Time base generator
#Horizontal Amplifier

Components of the Cathode Ray Tube (CRT)

#Filament
#Cathode plate
#Grid
#Accelerating anode plates
#Deflection plates (vertical deflection plates and horizontal deflection plates)
#Phosphor screen

The filament, cathode plate, grid and accelerating anode plates together make the electron gun.
The job of this electron gun is to produce high velocity electron beam.
Cathode ray tube (CRT) is the main part of the cathode ray oscilloscope. Therefore CRT is called as the 'Heart of the CRO'.