NIT Raipur Syllabus 3rd Semester Electrical Engineering



UNIT I Diodes characteristics ,equivalent circuit, Junction capacitance of diode and applications as Clipping, Clamping circuits, Voltage doublers, special purpose diodes- photodiode, LED, tunnel diode, Varactor diode, pin diode.

UNIT II Diode Applications Rectifiers: half wave and full wave bridge rectifier circuit ,Design filters for rectifiers. Various parameters of power supply, Shunt, Series & Zener voltage regulators.

UNIT III Input and output characteristics of transistor circuits, various Biasing – Purpose of biasing, dc operating point, dc load line, different biasing techniques – Base bias, Emitter bias, Voltage divider bias, Collector feedback bias, Thermal Runaway, Thermal stability. ac load line, graphical analysis, current, voltage & power gain, input and output impedance, analysis using r- parameters and h-parameters, frequency response, cascading.



Feedback amplifier and oscillators: General Feedback Theory, current and voltage feedback, Effect of negative feedback, condition for oscillation, Wein bridge` and RC phase shift oscillator, Hartley and Colpitts oscillator, crystal oscillator, Tunned diode oscillator.


Text Books:


1. Electronic Devices – Millman & Halkias

2. Electronics Principles – A.P.Malvino


Reference Books:


1. Electronic Circuit Discrete and Integrated – Donald I. Schilling 2. Electronic Devices – David Bell



Code: MA20312 SUBJECT: Numerical method and Computer Programming Minimum number of Class tests to be conducted: 2 Numerical Methods Unit1


: Numerical solution of algebraic & Transendental Equations. Approximation errors in computation, round of errors,trunication errors; solution of algebraic & transcendental equations using by section method ,Regula falsi method, Newton’s raphsons method, Secant method, Birge-vieta method.


Unit2: Numerical solution of simultaneous Linear equations and interpolation-Gauss Elimination method,Gauss Jordan’s method , Crout triangularisation method , Gauss seidal method, Gauss Jacobi’s method, Relaxation method ,Newton forward & Backward Interpolation, Newton divided Interpolation Lagrange interpolation, Striling’s and Bessel’s formula .



Code: EL20313 Subject: Electric Circuits Minimum number of Class tests to be conducted: 2


UNIT – I Development Of Circuit Concepts:

The relationship of field and circuit concept for parameters, lumped, linear and bilateral elements, voltage and current sources, duality of simple circuit, network topology: graph- tree, branch link, tie set, cutest, loop and nodal analysis, equilibrium equations.



Code: MA20314 Subject: Mathematics-III Minimum number of Class tests to be conducted: 2





Euler’s Formula, Functions having points of discontinuity, Change of interval, Even & Odd functions, Half range series, Harmonic analysis. UNIT II LAPLACE TRANSFORM Definition, Transform of elementary functions, Properties of Laplace transform, Transform of derivatives & integrals, Multiplication by tn, Division by t, Evaluation of integrals, Inverse Laplace Transform, Convolution theorem, Unit step function, Unit impulse function, Periodic function, Application to solution of ordinary differential equations. UNIT III PARTIAL DIFFERENTIAL EQUATION Formation, Solution by direct integration method, Linear equation of first order, Homogeneous linear equation with constant coefficients, Non-homogeneous linear equations, Method of separation of variables. UNIT IV COMPLEX VARIABLES Derivative, Cauchy-Riemann equations, Analytic functions, Harmonic functions, Flow problems, Complex integration, Cauchy theorem, Cauchy integral formula, Taylor & Laurent series, Singularity, Residue, Evaluation of real definite integrals. UNIT V Z-TRANSFORM Definition, Properties, Initial value & final value theorems, Inverse Z-transform, Convolution theorem, Partial fraction, Residue method & Applications to solution of difference equations. TEXT BOOKS: – 1. Higher Engg. Mathematics by Dr. B.S. Grewal– Khanna Publishers. 2. Advanced Engg. Mathematics by Erwin Kreyszig – John Wiley & Sons. REFERENCE BOOKS: – 1. Advanced Engg.Mathematics by R.K. Jain and S.R.K. Iyengar – Narosa Publishing House. 2. Applied Mathematics by P.N.Wartikar & J.N. Wartikar. Vol- II– Pune Vidyarthi Griha Prakashan, Pune. 3. Applied Mathematics for Engineers & Physicists by Louis A. Pipes- National Institute of Technology, RAIPUR B.Tech. III Semester Branch: Electrical Engg.


Code: EL20315




Subject: Generation of Electrical Energy (Conventional & Non-conventional) Minimum number of Class tests to be conducted: 2 UNIT -I Introduction to Generating station & Loads:

Choice of Power station and units: Types of power station, choice of type of generation, choice of size of generator units and number of units. Definition of connected load, maximum load, maximum demand, demand factor, load factor, diversity factor, plant capacity factor, plant utilization factor, load duration curve, mass curve UNIT -II Steam Power station: Main parts and working of a steam station, characteristics off steam turbines, characteristics of turbo alternators, steam station auxiliaries, steam station layout, super pressure steam stations. UNIT- III Hydro power stations: Hydrology, hydrographs, flow duration curve, mass curve, types of dam, principle of working of a hydro electric plant, tidal power plant, power to be developed, types of turbine and their characteristics, characteristics of generators, power station structure and layout. UNIT- IV (A) Nuclear power stations: main parts of nuclear power station principle of nuclear energy, main parts of reactor, types of power reactor, location of nuclear power plant, layout of power station, reactor control, nuclear waste disposal. (B) MHD generation: history of MHD generation, principle of MHD generation, MHD cycles and working fluids, open cycle MHD system, closed cycle MHD system, advantage of MHD generation. UNIT -V (A) New Energy Sources: Solar radiation, Solar energy collectors, Conversion of solar energy into electric energy, Solar hydrogen energy cycle, Wind mills, Tidal power generation schemes, Tidal barrage, Environmental aspects of new and old electric energy generation. (B) Economic operation of power systems: Criteria for distribution of load between units of a plant and between plants, transmission loss as a function of plant generation, loss formula coefficients, brief aspects of load dispatching. Text Books: 1.Generation of Electrical Energy by B.R. Gupta, S.Chand Pbs. 2. Electric Power Station, Car, T.H.,Chappman & Hall Reference Books: 1. Elements of Electric Power Station Design by M.V. Deshpande 2. A Course in Electrical Power by Soni Gupta Bhatnagar, Dhanpat Rai 3. A Course in Electrical Power by J.B.Gupta, Kataria Pbs. National Institute of Technology, RAIPUR B.Tech. III Semester Branch: Electrical Engg.


Code: EL20316 Subject: Electrical Machines-I Minimum number of Class tests to be conducted: 2




UNIT – I Single Phase Transformer

Review of transformer theory: Construction and Principle of operation of single phase transformer, equivalent circuit representation of a practical transformer , Phasor diagrams under no load and load condition, Auto-transformer equivalent circuit and phasor diagram. UNIT – II Three Phase Transformer Three-phase transformers, core and shell type transformer, three-phase tank, three-phase unit, Different connections and vector groups, three winding transformer connections, parameters of three winding transformer, coupled circuit view point. UNIT – III Parallel Operation And Testing Of Single Phase and Three Phase Transformers Parallel operation of single-phase and three-phase transformer, open delta, Scott connection, back-to-back test, separation of losses, excitation phenomenon in transformers. transformer cooling, pulse transformer, wide band transformer. UNIT – IV DC Generators Electromagnetic principle of DC machine, constructional details, production of voltage and torque, BLV and BLI concepts, classification of DC machine, conditions of self excitation, Cross-field machines, armature winding, armature reaction and its effect, flux and mmf waves, effect of brush shift, commutation, methods of improving commutation, Operating characteristics of DC generator, parallel operation. UNIT – V DC Motors DC machine as motor, electrical and mechanical characteristics of DC motor, starting and speed control of DC motors, losses in DC machines, Testing of DC machines, Swinburne’s test, regenerative and retardation test. Text Books: 1. Electrical Machines by Smarajit Ghosh, Pearson Education 2. Performance & Design of A.C. Machines by M.G. Say, C.B.S. Publishers Reference Books: 1. Performance & Design of D.C. Machines by A.E. Clayton & Hancock, C.B.S. Pbs. 2. Electric Machines by Nagrath & Kothari, TMH Pbs. 3. Electric Machines by P.K. Mukherjee & S.Chakravarti, Dhanpat Rai 4. Electrical machines by B. R, Gupta, New age international. .

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