Monday, June 15, 2009

books for IES

Recommended Books for IES
Books for IES Electronic and Telecommunications Engineering
- Network Analysis: Van Valkenburg
- Network and Systems: D. Roy Choudhary
- Integrated Electronics: Jacob Milman & C. Halkias, Millman & Grabel
- Integrated Circuits: K.R. Botkar
- Op. Amps & Linear Integrated Circuit: Gayakwad
- Digital Logic & Computer Design: Moris Mano
- Signals and System: Oppehum, Willsky & Nacob
- Automatic Control System: Benjamin C. Kuo
- Control System Engineering: Nagrath & Gopal
- Principle of Communication System: Taub & Schilling
- Communication System: A. Bruu Carlson
- Electromagnetic Waves & Radiating Systems: Jardon & Balmain, JD Kraus

Books for IES Electrical Engineering
- Network Analysis: Van Valkenburg
- Electromagnetic: Willain H. Hayt
- Electrical Machinery: PS Bhimra
- Electrical Machines: Nagrath & Kothari
- Power System Engineering: Nagrath & Kothari
- Electric Power Systems: CL Wadhwa
- Automatic Control System: Benjamin C. Kuo
- Control System Engineering: Nagrath & Gopal
- Electrical & Electronic Measurement and Instrumentation: AK Sawhney
- Integrated Electronics: Milman & Halkias, Millma & Grobel
- Digital Logic & Computer Design: Morris Mano
- Power Electronics: PS Bhimra

Books for IES Civil Engineering
- Strength of Materials: Gere & Temoshenko, B C Punamia
- Structural Analysis: Negi, S Ramamurtham, C K Vang
- Concrete Structures: Punamia & Jain, H J Shah
- Steel Structures: Duggal
- Soil Mechanics & Foundation Engineering: Ranjan & Rao, Venkat Ramaiha, S K Garg
- Fluid Mechanics and Hydraulics: Modi & Seth, R K Bansal, Subramanyam
- Hydrology: Subramanyam
- Irrigation: S K Garg
- Highway Engineering: Khanna & Jasto, Kadiyali

Books for IES Mechanical Engineering
- Enginnering Thermodynamics: PK Nag
- IC Engine: ML Mathur and RP Sharma
- Gas Turbine and Propulsive Systems: PR Khajuria & SP Dubey
- Fluid Mechanics: Modi & Seth, RK Bansal
- Compressible Flow: SM Yahya
- Heat and Mass Transfer: JP Hollman, RC Sachdeva
- Refrigeration and Air Conditioning: CP Arora, Domkundwar
- Fluid Machinery: Jagdish Lal, RK Bansal
- Theory of Machines: RS Khurmi, Malik & Ghosh
- Mechanical Vibration: Grover
- Machine Design: Shigley, VB Bhandari
- Material Science: WD Callister, IP Singh
- Production Engineering: Kalpkjian Schmid, Amitabh Ghosh & AK Malik
- Industrial Engineering: O P Khanna, Buffa & Sarin
- Operations Research: Kanti Swarup
- Strength of Materials: Gere & Timoshenko, BC unamia, Sadhu Singh

Saturday, June 13, 2009

GATE syllabus of EE


Linear Algebra: Matrix Algebra, Systems of linear equations, Eigen values and 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, Surface and Volume integrals, Stokes, Gauss and Green's theorems.

Differential equations: First order equation (linear and nonlinear), Higher order linear differential equations with constant coefficients, Method of variation of parameters, Cauchy's and Euler's equations, Initial and boundary value problems, Partial Differential Equations and variable separable method.

Complex variables: Analytic functions, Cauchy's integral theorem and integral formula, Taylor's and Laurent' series, Residue theorem, solution integrals.

Probability and Statistics: Sampling theorems, Conditional probability, Mean, median, mode and standard deviation, Random variables, Discrete and continuous distributions, Poisson, Normal and Binomial distribution, Correlation and regression analysis.

Numerical Methods: Solutions of non-linear algebraic equations, single and multi-step methods for differential equations.

Transform Theory: Fourier transform, Laplace transform, Z-transform.


Electric Circuits and Fields: Network graph, KCL, KVL, node and mesh analysis, transient response of dc and ac networks; sinusoidal steady-state analysis, resonance, basic filter concepts; ideal current and voltage sources, Thevenin's, Norton's and Superposition and Maximum Power Transfer theorems, two-port networks, three phase circuits; Gauss Theorem, electric field and potential due to point, line, plane and spherical charge distributions; Ampere's and Biot-Savart's laws; inductance; dielectrics; capacitance.

Signals and Systems: Representation of continuous and discrete-time signals; shifting and scaling operations; linear, time-invariant and causal systems; Fourier series representation of continuous periodic signals; sampling theorem; Fourier, Laplace and Z transforms.

Electrical Machines: Single phase transformer - equivalent circuit, phasor diagram, tests, regulation and efficiency; three phase transformers - connections, parallel operation; auto-transformer; energy conversion principles; DC machines - types, windings, generator characteristics, armature reaction and commutation, starting and speed control of motors; three phase induction motors - principles, types, performance characteristics, starting and speed control; single phase induction motors; synchronous machines - performance, regulation and parallel operation of generators, motor starting, characteristics and applications; servo and stepper motors.

Power Systems: Basic power generation concepts; transmission line models and performance; cable performance, insulation; corona and radio interference; distribution systems; per-unit quantities; bus impedance and admittance matrices; load flow; voltage control; power factor correction; economic operation; symmetrical components; fault analysis; principles of over-current, differential and distance protection; solid state relays and digital protection; circuit breakers; system stability concepts, swing curves and equal area criterion; HVDC transmission and FACTS concepts.

Control Systems: Principles of feedback; transfer function; block diagrams; steady-state errors; Routh and Niquist techniques; Bode plots; root loci; lag, lead and lead-lag compensation; state space model; state transition matrix, controllability and observability.

Electrical and Electronic Measurements: Bridges and potentiometers; PMMC, moving iron, dynamometer and induction type instruments; measurement of voltage, current, power, energy and power factor; instrument transformers; digital voltmeters and multimeters; phase, time and frequency measurement; Q-meters; oscilloscopes; potentiometric recorders; error analysis.

Analog and Digital Electronics: Characteristics of diodes, BJT, FET; amplifiers - biasing, equivalent circuit and frequency response; oscillators and feedback amplifiers; operational amplifiers - characteristics and applications; simple active filters; VCOs and timers; combinational and sequential logic circuits; multiplexer; Schmitt trigger; multi-vibrators; sample and hold circuits; A/D and D/A converters; 8-bit microprocessor basics, architecture, programming and interfacing.

Power Electronics and Drives: Semiconductor power diodes, transistors, thyristors, triacs, GTOs, MOSFETs and IGBTs - static characteristics and principles of operation; triggering circuits; phase control rectifiers; bridge converters - fully controlled and half controlled; principles of choppers and inverters; basis concepts of adjustable speed dc and ac drives.

Friday, June 12, 2009

Microelectronic & optoelectronic quastion of 2007 ,4th sem ECE ,WBUT

Microelectronic and optoelectronic 2007 ,wbut 4th semester
2. Derive the one dimensional continuity equation for minority carriers in generation recombination process, under low injection condition.Gn, GP, Rn and Rp are generation and recombination rates for electron/hole.
3. What is population inversion in laser? What is external quantum efficiency in a semiconductor laser? What is the optical feedback and oscillation by which the amplified coherent emission is obtained?
4. An n-type semiconductor at thermal equilibrium(T=300K) has a linear variation in doping concentration given by Nd(x)=1016-1919x, 0≤x≤1µm.Determine induced electric field. (volt equivalent temperature at room temperature =0.02V)
5. Discuss the principle of operation of vertical power BJT.
6. With energy band diagram describe schottky junction barrier formation . Describe its operation under external bias.
7. (a) What is SCR? point out its major uses.
(b0 By using two transistor analog, briefly describe the operation of two terminal scr.
(c) Is it possible to observe the purpose of SCR by connecting two transistors? Explain.
(d) How does the presence of third terminal control the I-V response of SCR? Explain with system diagram.
8. (a) Sketch the ideal energy band diagram of a metal-semiconductor junction in which Фm<фs. Explin why this is an ohmic contact.
(b) Discuss how 2D-electorn gas is formed ain semiconductor heterojuction.
(c) the schottky barrier of a Si schottky junction is фBN=0.59v,the effective Richardson is A=111A/K2-cm2 and the crosssection area is a=10-4cm2
for T=100k, calculate
(i) Ideal reverse saturation current
(ii) The diode current for V (applied)=0.30V.
9. (a) Illustrate the basic process flow in micromanaging? What do you mean by optical lithography?
(b) What do you mean by plasma etching?
(c) Explain one non-lithographic microfabrication technology.
10. (a) What is the advantage of optical fibre over the copper wire system ?
(b) What is the difference between step index and graded index fibres?
(c) Distinguish between non-radiative and radiative recombination processes in a semiconductor .Express the internal quantum efficiency in terms of the life times of the process.
(d) Asilican optical fiber has a core refractive index of 1.5 and the cladding refractive index of 1.450 . calculate
(i) the critical angle for the core cladding interface.
(ii) the acceptance angle in air for fiber .
(iii) the nimerical aperture (NA) of the fiber.
11. Write short note on any three of the following
(a) Solar cell
(b) semiconductor laser
(c) Insulated bipolar junction transistor
(d) P-I-N photodiode
(e) O.E.I.C.

Friday, June 5, 2009

WBUT question of Analog communication 2007

2 (A) Define amplitude modulation and modulation index. Use a sketch of sinusoidally modulated AM waveform to help to explain the definition.
(b) Derive the expression between the output power of an AM transmitter and the depth of modulation.
3. What is angle modulation ? Justify that frequency modulation is an angle modulation.
4. drive the expression of single to noise ratio of DSB-SC system.
5.(A)What do you mean by FDM? when it is used?
(b) What is Carson's rile?
6. The equation for an FM wave is
S(t)=10sin(5.7×108t + 5sin12×103t)
(a) carrier frequency
(b) modulating frquency
(c) frequency deviation
(d) modulation index
(e) power dissipated in 100 ohm
7.(a) What is the concept behind NBFM ? Drive its equation.
(b) Explain how FM can be generated using VCO.
(c) Discuss about the roles of pre-emphasis and de-emphasis circuit in FM
8.(a) Draw the block diagram for generation and detection of PCM system.
(b) What is quantization? Find signal to quantization noise ratio for PCM system.
(c) A signal is sampled at Nyquist rate of 8 kHz and is quantized using 8 bit uniform quantizer. Assuming SNRq for a sinusoidal signal, calculate bit rate, SNRq and BW.
9 (a) State and prove parseval's power theorem.
(b) Describe with a block diagram the principle of operation of a square low modulator generating DSB-SC.
(c) Explain the advantages and disadvantages of modulation.
10 (a) Draw the block diagram of a superheterodyne receiver and explain its working principle .
(b) Explain the operation of balanced modulator.
11 Write short notes on any three of the following :
(a) Entropy and its properties
(b) QCM
(c) termal noise
(d) power spectral density function
(e) pulse coded modulation

Tuesday, June 2, 2009

Question of WBUT Analog circuit of 2008 4th sem ECE

hi my friends form 3rd june B.TECH exam of WBUT is start ,so i going to post the Question paper of 2008 of ECE 4th sem .i try to post the question paper before today i am posting the question of anlog circuit of 4th sem because the frist exam is analog circuit on 4th june.
the Question is as follows(objective question are not given)
QUESTION of 2008
2. Draw and explain half wave rectifier.
3. compare between class A,class B,and class AB amplifier.
4. what is the advantages and disadvantages of feedback in amplifier?What are the type of feedback required for (i) voltage amplifier (ii) current amplifier?
5. Draw and explain the operation of Hartley oscillator.
6. What is clipper?with help of circuit diagram and wave forms,describe the operation of a positive and negative clipper.
7 (a) Draw and explain briefly the circuit of single stage current series feedback amplifier . Mention effect of negative feedback on gain and bandwidth.(b) Write down the barkhausen criterion for sinusoidal oscillation.Obtain expression for output frequency and condition to sustain oscillation of a RC phase shift oscillator.
(c) What are the advantages of differential amplifier?
8 (a) a numerical problem form op-amp.
(b) Write down the criteria of good instrumentation amplifier. Draw the circuit of an instrumentation amplifier using a transducer bridge and explain its operation.
(C) Realize multiplier using logarithmic amplifier. Mention application of analog multiplier.
9 (a) Draw the circuit and explain voltage to current converter (Grounded load) .
(B)Explain the Op-Amp integrator circuit .
(c) What is voltage follower ?
10. (a) what is function of voltage regulator ?
(b) Give and explain the important parts of series regulated power supply using discrete component.
(c) Draw the function diagram of 723 regulator.
11.Write short notes on any three of the follwing.
(A) Push pull amplifier
(B) Wein bridge oscillator
(C) Bridge rectifier
(D) clamping circuit
(e) Logarithmic amplifier.
this is question of 2008
bast of luck for sem.