Electrical Machine III

U A Bakshi

Electrical Machine 3 By M.V.Bakshi & U.A.Bakshi is a free book for electrical engineers. Electrical Machine 3 By M.V.Bakshi & U.A.Bakshi contains the advance level of electrical machine parts and studies . However this book also highlighted the most important parts of machine and fundamentals. For understanding machines , its part and operation this is one of the best book for electrical engineers.  

Electrical Machine-I

U A Bakshi

TransformersConstruction, Polarity test, Sumpner's test, All day efficiency.Autotransformer Volt-amp relation, Efficiency, Advantages and disadvantages and applications, Three-phase transformers : Connections, Three-phase bank of single phase transformers, Scott connections, Instrument transformers.D.C. MachinesD.C. Machine : Construction, emf and torque equations. Armature reaction, Commutation, Performance characteristics of motors and generators, Starting of motors, Speed control, Losses and efficiency.Three Phase Induction MotorConstruction, Rotating magnetic field and Principle of operation, Equivalent circuit, Torque production, Torque-slip characteristics, Speed control, Starting of squirrel cage and Slip ring induction motors.Three Phase Synchronous MachinesAlternator : Construction, EMF equation and effects of pitch and distribution factors, Phasor diagram, Armature reaction, Voltage regulation and its determination by synchronous impedance method, Methods of synchronization.Synchronous Motor : Principle of operation and starting torque and mechanical power developed, Effect of excitation on line current, (V-curves).Fractional H.P. MotorsSingle phase induction motor : Construction, Revolving field theory and principle of operation, equivalent circuit and starting methods. Two-phase servo-motor, Stepper motor, and their applications.Industrial ApplicationsConcept of braking in dc and ac motors, Two quadrant and four quadrant operation of dc and three phase induction motors, Industrial applications of dc and ac motors.

Basic Electrical Engineering

By U. A. Bakshi and V. U. Bakshi

Basic Electrical Engineering By Bakshi gives a strong review of electrical building standards intended for both electrical and in addition non-electrical designing understudies. With the liberal utilization of practical illustrations and various activities, it offers an unparalleled presentation to Electricity Fundamentals, Network Theory, Electromagnetism, Electric Machines, Transformer sand Measuring Instruments.

Circuit Theory

By U.A.Bakshi A.V.Bakshi

This is designed for a first course in Circuit Analysis which is usually accompanied by a set of labs. It is assumed that students are in a Differential Equations class at the same time. Phasors are used to avoid the Laplace transform of driving functions while maintaining a complex impedance transform of the physical circuit that is identical in both. 1st and 2nd order differential equations can be solved using phasors and calculus if the driving functions are sinusoidal. The sinusoidal is then replaced by the more simple step function and then the convolution integral is used to find an analytical solution to any driving function. This leaves time for a more intuitive understanding of poles, zeros, transfer functions, and Bode plot interpretation.

Electronic & Electrical Measuring Intruments & Machines

By U.A.Bakshi, A.V.Bakshi

Measuring InstrumentsPrinciple of Permanent Magnet Moving Coil (PMMC), Moving Iron Instruments, Ammeters & Voltmeters, Operating Principles of the Electrodynamometer Instruments. Wattmeter, Energy meter, Electrostatic Instruments, Rectifier type Instruments, Extension of Ranges of Voltmeters and Ammeters. Principle of Power Factor & Frequency meter. Use of Current & Potential Transformers. Measurement of R, L, and CMeasurement of low, medium & high resistances Wheatstone & Kelvin bridge, Ohmmeter, Megger. A.C. bridge circuits for measurement of inductance & capacitance-Maxwell s, Hay s & Anderson s bridge, Schering bridge.PotentiometersPrinciples of D.C & A.C. Potentiometers & their applications.Magnetic Properties of MaterialsThe magnetic dipole movement, diamagnetism. The origin of permanent magnetic dipoles in matter, Paramagnetism, Ferromagnetism.D.C. MotorsPrinciples of working, E.M.F. equation, back EMF, torque equations, methods of excitation, characteristics of D.C. shunt, series & compound motors, speed torque characteristic of D.C. motors, starters, principles of speed control. Three Phase Induction MotorsRotating magnetic field, construction & principle of operation, slip, rotor frequency, development of equivalent circuit, torque equation, maximum torque, torque speed characteristics, speed control. Starting methods, motor ratings.Stepper MotorPrinciple of working, characteristics & applications.

Microprocessor and Microcontroller System

By A.P. Godse and D.A. Godse

Microprocessor and microcomputer system, Functional pin diagram and detailed architecture of 8085 microprocessor, De-multiplexing of address / data bus, Generation of control signals, Instruction set, Addressing modes. Programming for arithmetic and logical operation, Subroutine concepts.Functional pin diagram and architecture of 8031/51 microcontroller, Port structure, Instruction set and assembly language programming.Timer / counter, Modes of operation, Programming timer / counter. Interrupt structure and interrupts programming.Serial communication programming in 8051 (Only standard 8-bit UART mode).Memory interfacing (RAM, ROM, EPROM) - Basic concept in memory interfacing and address decoding.Programmable peripheral interface (8255) - Block diagram, Control words and modes and interfacing.Interfacing to external RAM and ROM, LED, Switch, 7-segment display, Multiplexed 7-segment display, Matrix key-board, Liquid crystal display, DAC, ADC, Stepper motor with programs.Buses and Protocols : RS 232, RS 485, , MODBUS, IEEE 488.Interfacing to EEPROM 93C46 / 56 / 66, 24C16 / 32 / 64, RTC DS1307.Conceptual study of various derivatives of 8051 microcontroller from different manufacturers like Atmel, Phillips etc. Introduction to PIC microcontroller.

Analog Electronics

1 FREQ. RESPONSE OF NEG. FEEDBACK AMPLIFIER
2 BUILD & TEST COLPITT OSCILLATOR
3 BUILD & TEST HARTLEY OSCILLATOR
4 BUILD & TEST WEINS BRIDGE OSCILLATOR
5 BUILD & TEST UJT AS A RELAXATION OSCILLATOR
6 OUTPUT CHARACTERISTICS OF N-CHANNEL JFET
7 CALCULATE rd, gm and μ for JFET
8 MEASURE OP-AMP PARAMETERS
9 STUDY OF INVERTING AMPLIFIER USING OP-AMP
10 STUDY OF NON-INVERTING AMPLIFIER USING OP-AMP
11 STUDY OF DIFFERENTIATING CIRCUIT USING OP-AMP
12 STUDY OF INTEGRATING CIRCUIT USING OP-AMP
13 STUDY OF OP-AMP AS SUMMING AMPLIFIER
14 STUDY OF OP-AMP AS V TO I CONVERTER
15 ASTABLE MULTIVIBRATOR USING IC 555
16 MONOSTABLE MULTIVIBRATOR USING IC 555
17 BISTABLE MULTIVIBRATOR USING IC 555