THERMAL AND HYDRAULIC MACHINES (NME-309)
Thermodynamic equilibrium, cyclic process, enthalpy, Zero, first and second laws of thermodynamics, Carnot cycle, concept of entropy, properties of steam, processes involving steam in closed and open systems, Enthalpy.
Vapour Pressure Cycles: Rankine cycle, reheat cycle, Regenerative cycle
Steam Turbine:Theoretical approach only of Classification, impulse and reaction turbines their velocity diagrams and related calculations, work done and efficiencies, re-heat factor, staging, bleeding and governing of turbines.
Gas Turbine:Theoretical approach only of Classification, Brayton cycle, working principle of gas turbine, gas turbine cycle with intercooling, reheat and regeneration, stage and polytrophic efficiencies.
Otto, Diesel .and Dual cycles, introduction to 2-stroke and 4-stroke SI and CI engines.
Impact of Jet:Introduction to hydrodynamic thrust of jet on a fixed and moving surface ( flat and curve).
Hydraulic Turbines: Classification, heads and efficiencies, construction, working, work done and efficiency of impulse turbines.
Centrifugal Pump:Classification, construction, working.
Reciprocating Pump: Classification ,construction, working.
ELECTRO-MECHANICAL ENERGY CONVERSION –I (NEE – 301)
Unit – I
Principles of Electro-mechanical Energy Conversion- Introduction, Flow of Energy in Electromechanical Devices, Energy in magnetic systems (defining energy & Co-energy), Singly excited systems; Determination of mechanical force, Mechanical energy, Torque equation, Doubly excited Systems; Energy stored in magnetic field, Electromagnetic torque , Generated emf in machines; Torque in machines with cylindrical air gap.
Unit – II
D.C. Machines- Construction of DC Machines, Armature winding, Emf and torque equations, Armature reaction, Commutation, Interpoles and compensating windings, Performance characteristics of D.C. generators.
D.C. Machines (Contd.)- Performance characteristics of D.C. motors, Starting of D.C. motors; point and point starters, Speed control of D.C. motors; Field control, Armature control and Voltage control (Ward Lenonard method); Efficiency and Testing of D.C. machines
(Hopkinson’s and Swinburn’s Test).
Unit – IV
Single Phase Transformer- Phasor diagram, Efficiency and voltage regulation, All day
Testing of Transformers- O.C. and S.C. tests, Sumpner’s test, Polarity test.
Auto Transformer- Single phase and three phase auto transformers, Volt-amp relation, Efficiency, Merits & demerits and applications.
Unit – V
Three Phase Transformers – Construction, Three phase transformer, Phasor groups and their connections, Open delta connection, Three phase to 2 phase, 6 phase or 12 phase connections and their applications, Parallel operation of single phase and three phase transformers and load sharing, Excitation phenomenon and harmonics in transformers, Three winding transformers.
ELECTRICAL MEASUREMENT & MEASURING INSTRUMENTS (NEE-302)
Philosophy of Measurement- Methods of measurement, Measurement system, Classification of instrument systems, Characteristics of instruments & measurement systems, Errors in measurement & its analysis, Standards.
Analog Measurement of Electrical Quantities- Electrodynamic, Thermocouple, Electrostatic & Rectifier type ammeters & voltmeters, Electrodynamic wattmeter, Three Phase wattmeter, Power in three phase systems, Errors & remedies in wattmeter and energy meter.
Instrument Transformers:CT and PT; their errors, Applications of CT and PT in the extension of instrument range, Introduction to measurement of speed, frequency and power factor.
Measurement of Parameters- Different methods of measuring low, medium and high resistances, measurement of inductance & capacitance with the help of AC Bridges, Q meter.
AC Potentiometers- Polar type & Co-ordinate type AC potentiometers, application of AC Potentiometers in electrical measurement.
Magnetic Measurement- Ballistic galvanometer, Flux meter, Determination of hysteresis loop, measurement of iron losses.
Digital Measurement of Electrical Quantities- Concept of digital measurement, Block diagram, Study of digital voltmeter, Frequency meter, Spectrum analyzer, Electronic multimeter.
Cathode Ray Oscilloscope- Basic CRO circuit (block diagram), Cathode Ray Tube (CRT) & its components, Applications of CRO in measurement, Lissajous Pattern, Dual trace & dual beam oscilloscopes.
BASIC SYSTEM ANALYSIS (NEE-303)
Introduction to Continuous Time Signals and Systems- Basic continuous time signals, Unit step, Unit ramp, Unit impulse and periodic signals with their mathematical representation and characteristics. Inversion, Shifting and Scaling of signals, Introduction to various types of
systems, Causal, Stable, Linear and Time invariant systems. Analogous System- Linear mechanical elements, Force-voltage and force-current analogy, Modeling of mechanical and electro-mechanical systems.
Fourier Transform Analysis- Exponential form and compact trigonometric form of Fourier series, Fourier symmetry, Fourier Transform: Properties, Applications to network analysis.
Laplace Transform- Review of Laplace Transform, Initial and Final Value theorems, Inverse Laplace Transform, Convolution theorem, Application of Laplace Transform to analysis of networks, Waveform synthesis and Laplace Transform of complex waveforms.
State – Variable Analysis- Introduction, State Space representation of linear systems, Transfer Function and State Variables, State Transition Matrix, Solution of State Equations for homogeneous and non-homogeneous systems, Applications of State-Variable technique to the analysis of linear systems.
Z-Transform Analysis- Concept of Z-Transform, Z-Transform of common functions, Inverse Z Transform, Initial and Final Value theorems, Applications to solution of difference equations, Pulse Transfer Function.
ANALOG AND DIGITAL ELECTRONICS (NEC-409)
Special Diodes-LED, Varactor diode, Photo diode, Schottky diode, Tunnel diode; their characteristics and applications.Transistors as a switch.
Frequency Response: Amplifier transfer function, low and high frequency response of common emitter and common source amplifiers.
Feedback: General feedback structure; properties of negative feedback; series-series, series-shunt, shunt-series and shunt-shunt feedback amplifiers.
Basic principle of sinusoidal oscillator, R-C Phase Shift and Wein Bridge oscillators, tuned oscillators-Collpits and Hartley; Crystal oscillator
Combinational Logic Circuits: Multiplexers/Demultiplexures, Encoders/Decoders.
Sequential Logic Circuits: latches, flip-flops- S-R, T, D, J-K.
Shift Registers: Basic principle, serial and parallel data transfer, shift left/right registers, universal shift register.
Counters: Mode N Counters, ripple counters, synchronous counters, ring/Johnson counters.
OP-AMP applications – Astable, Monostable and Bistable multivibrators, Schmitt trigger, IC-555 Timer, A/D and D/A converters.
Voltage Regulators: Series, shunt and switching regulators, op-amp based configurations.
Memories: Introduction to ROM, RAM; Sequential Memory, Memory organization.