‹ ›
XmonoCodes • Learn / Build / Grow

CREATIVITY
MEETS CODE.

Practical knowledge for students, developers and curious builders — from programming and web development to projects, notes and real-world problem solving.

  • “Learn something useful every day.”
  • “Build ideas into real projects.”
  • “Understand the why, not just the how.”
  • “Keep experimenting. Keep improving.”

Latest from XmonoCodes

Explore tutorials, notes, projects, syllabus material and practical coding content.

Sunday, March 31, 2024

BEC101 / BEC201 : FUNDAMENTALS OF ELECTRONICS ENGINEERING SYLLABUS

BEC101 / BEC201 : 

FUNDAMENTALS OF ELECTRONICS ENGINEERING


Unit-1

Semiconductor Diode: 

Depletion layer, 

V-I characteristics, 

Ideal and practical Diodes,

Diode Equivalent Circuits, 

Zener Diodes breakdown mechanism (Zener and avalanche)


Diode Application: 

Diode Configuration, 

Half and Full Wave rectification, 

Clippers,

Clampers, 

Zener diode as shunt regulator, 

Voltage-Multiplier Circuits


Special Purpose two terminal Devices: 

Light-Emitting Diodes, 

Photo Diodes, 

Varactor

Diodes, 

Tunnel Diodes.



Unit-2 

Bipolar Junction Transistor: 

Transistor Construction, 

Operation, 

Amplification action. 

Common Base, Common Emitter, Common Collector Configuration


Field Effect Transistor: 

Construction and Characteristic of JFETs. Transfer Characteristic. 

MOSFET (MOS) (Depletion and Enhancement) Type, Transfer Characteristic.



Unit-3

Operational Amplifiers: Introduction, 

Op-Amp basic, 

Practical Op-Amp Circuits (Inverting Amplifier, Non-inverting Amplifier, Unit Follower, Summing Amplifier, Integrator, Differentiator).

Differential and Common-Mode Operation, 

Comparators.



Unit-4

Digital Electronics: 

Number system & representation, 

Binary arithmetic, 

Introduction of Basic and Universal Gates, 

Using Boolean algebra simplification of Boolean function. 

K Map Minimization upto 6 Variables.



Unit-5

Fundamentals of Communication Engineering: 

Basics of signal representation and analysis, 

Electromagnetic spectrum Elements of a Communication System, 

Need of modulation and typical applications, 

Fundamentals of amplitude modulation and demodulation techniques.


Introduction to Wireless Communication: 

Overview of wireless communication,

Cellular communication, 

Different generations and standards in cellular communication systems, 

Fundamentals of Satellite & Radar Communication.



BEE101 / BEE201: FUNDAMENTALS OF ELECTRICAL ENGINEERING SYLLABUS

BEE101 / BEE201: 

FUNDAMENTALS OF ELECTRICAL ENGINEERING


Unit -1: DC Circuits

Electrical circuit elements (R, L and C), 

Concept of active and passive elements,

voltage and current sources, 

concept of linearity, 

unilateral and bilateral elements.

Kirchhoff‟s laws, 

Mesh and nodal methods of analysis.



Unit-2: : Steady State Analysis of Single Phase AC Circuits 6

Representation of Sinusoidal waveforms – Average and effective values, Form and peak factors.

Analysis of single phase AC Circuits consisting R-L-C combination (Series and Parallel) Apparent, active & reactive power, Power factor. 

Concept of Resonance in series & parallel circuits, 

bandwidth and quality factor.

Three phase balanced circuits, 

voltage and current relations in star and delta connections.



Unit-3: Transformers 6

Magnetic circuits, 

Ideal and practical transformer, 

Equivalent circuit, 

Losses in transformers, 

Regulation and Efficiency.



Unit-4: Electrical machines 8

DC machines: 

Principle & Construction, 

Types, 

EMF equation of generator

Torque equation of motor, 

Applications of DC motors (simple numerical problems)


Three Phase Induction Motor: 

Principle & Construction, 

Types, 

Slip-torque characteristics, 

Applications (Numerical problems related to slip only)


Single Phase Induction motor: 

Principle of operation,

Introduction to methods of starting, 

Applications.


Three Phase Synchronous Machines: 

Principle of operation of alternator and synchronous motor,

Applications.



Unit-5: Electrical Installations 4

Introduction of Switch Fuse Unit (SFU), MCB, ELCB, MCCB, ACB. 

Types of Wires,

Cables and Bus-bars. 

Fundamentals of earthing and lightning protection. 

Types of Batteries



BAS203 : ENGINEERING MATHEMATICS-II SYLLABUS

 BAS203 : ENGINEERING MATHEMATICS-II


Unit -1: Ordinary Differential Equation of Higher Order 

Linear differential equation of nth order with constant coefficients, 

Simultaneous linear differential equations, 

Second order linear differential equations with variable coefficients, 

Solution by changing independent variable, 

Method of variation of parameters, 

Cauchy-Euler equation, 

Application of differential equations in solving engineering problems.



Unit-2: Laplace Transform

Laplace transform, 

Existence theorem, 

Properties of Laplace Transform, 

Laplace transform of derivates and integrals, 

Unit step function, 

Laplace transform of periodic function, 

Inverse Laplace transform, 

Convolution theorem. 

Application of Laplace Transform to solve ordinary differential equations and simultaneous differential equations.



Unit-3: Sequence and Series

Definition of Sequence and series with examples, 

Convergence of series, 

Tests for convergence of series, 

Ratio test, 

D’ Alembert’s test, 

Raabe’s test, 

Comparison test.

Fourier series, 

Half range Fourier sine and cosine series.



Unit-4: Complex Variable–Differentiation

Functions of complex variable, 

Limit, Continuity and differentiability, 

Analytic functions, 

Cauchy- Riemann equations (Cartesian and Polar form), 

Harmonic function, 

Method to find Analytic functions, 

Milne’s Thompson Method, 

Conformal mapping, 

Mobius transformation and their properties.



Unit-5: Complex Variable –Integration

Complex integration, 

Cauchy- Integral theorem, 

Cauchy integral formula, 

Taylor’s and Laurent’s series, 

Singularities and its classification, 

Zeros of analytic functions,

Residues, 

Cauchy’s Residue theorem and its application.



BAS103 : ENGINEERING MATHEMATICS-I SYLLABUS

 BAS103 : ENGINEERING MATHEMATICS-I


Unit-1: Matrices

Elementary transformations, 

Inverse of a matrix, 

Rank of matrix, 

Solution of system of linear equations, 

Characteristic equation, 

Cayley-Hamilton Theorem and its application,

Linear Dependence and Independence of vectors, 

Eigen values and Eigen vectors, 

Complex Matrices, 

Hermitian, 

Skew-Hermitian and Unitary Matrices, 

Applications to Engineering problems.



Unit-2: Differential Calculus- I 

Successive Differentiation (nth order derivatives), 

Leibnitz theorem, 

Curve tracing,

Partial derivatives, 

Euler’s Theorem for homogeneous functions, 

Total derivative, 

Change of variables.



Unit-3: Differential Calculus-II 

Expansion of functions by Taylor’s and Maclaurin’s theorems for functions of one and two variables,

Maxima and Minima of functions of several variables, 

Lagrange’s method of multipliers, 

Jacobians, 

Approximation of errors.



Unit-4: Multiple integration 

Double integral, 

Triple integral, 

Change of order of integration, 

Change of variables, 

Beta and Gama function and their properties, 

Dirichlet’s integral and its applications to area and volume, 

Liouville’s extensions of Dirichlet’s integral.



Unit-5: Vector Calculus 


Vector differentiation: 

Gradient, Curl and Divergence and their Physical interpretation,

Directional derivatives.


Vector Integration: 

Line integral, 

Surface integral, 

Volume integral, 

Gauss’s Divergence theorem, 

Green’s theorem and Stoke’s theorem (without proof) and their applications.



BAS102 / BAS202: ENGINEERING CHEMISTRY SYLLABUS

BAS102 / BAS202: ENGINEERING CHEMISTRY



Unit-1:

Atomic and Molecular Structure:
Molecular orbital’s of diatomic molecules,
Bond Order,
Magnetic characters and numerical problems.

Chemistry of Advanced Materials:

Liquid Crystals; Introduction, 
Types and Applications of liquid crystals, 
Industrially important materials used as liquid crystals.

Graphite and Fullerene; Introduction, 
Structure and applications.

Nanomaterials; Introduction,
Preparation, 
characteristics of nanomaterials and applications of nanomaterials, 
Carbon Nano Tubes (CNT),

Green Chemistry: Introduction, 
12 principles and importance of green Synthesis, 
Green Chemicals, 
Synthesis of typical organic compounds by conventional and Green route (Adipic acid and Paracetamol),
Environmental impact of Green chemistry on society.


Unit-2: 

Spectroscopic Techniques and Applications: 
Elementary idea and simple applications of UV, IR and NMR, Numerical problems.

Stereochemistry: 
Optical isomerism in compounds without chiral carbon, 
Geometrical isomerism, 
Chiral Drugs.


Unit-3:

Electrochemistry and Batteries: 
Basic concepts of electrochemistry.

Batteries; 
Classification and applications of Primary Cells (Dry Cell) and Secondary Cells (Lead Acid battery).

Corrosion: 
Introduction to corrosion, 
Types of corrosion, 
Cause of corrosion, 
Corrosion prevention and control, 
Corrosion issues in specific industries (Power generation, Chemical processing industry, Oil & gas industry and Pulp & paper industries).

Chemistry of Engineering Materials:

Cement; 
Constituents, 
manufacturing, 
hardening and setting, 
deterioration of cement, 
Plaster of Paris (POP).


Unit-4:

Water Technology: 
Sources and impurities of water, 
Hardness of water, 
Boiler troubles,
Techniques for water softening (Lime-Soda, Zeolite, Ion Exchange and Reverse Osmosis process), Determination of Hardness and alkalinity, 
Numerical problems.

Fuels and Combustion: 
Definition, 
Classification, 
Characteristics of a good fuel, 
Calorific
Values, 
Gross & Net calorific value, 
Determination of calorific value by Bomb Calorimeter,
Theoretical calculation of calorific value by Dulong’s method, 
Ranking of Coal, 
Analysis of coal by Proximate and Ultimate analysis method, 
Numerical problems, 
Chemistry of Biogas production from organic waste materials and their environmental impact on society.


Unit-5: 

Materials Chemistry:

Polymers; 
Classification, 
Polymerization processes, 
Thermosetting and Thermoplastic Polymers, 
Polymer Blends and Composites, 
Conducting and Biodegradable polymers,
Preparation, 
Properties, 
Industrial applications of Teflon, Lucite, Bakelite, Kelvar, Dacron, Thiokol, Nylon, Buna-N and Buna and their environmental impact on society, 
Speciality polymers.

Organometallic Compounds: 
General methods of preparation and applications of Organometallic compounds (RMgX and LiAlH4).


BAS101 / BAS201: ENGINEERING PHYSICS SYLLABUS

BAS101 / BAS201: ENGINEERING PHYSICS


Unit-1: Quantum Mechanics

Inadequacy of classical mechanics, 
Planck’s theory of black body radiation(qualitative),
Compton effect, 
de-Broglie concept of matter waves, 
Davisson and Germer Experiment,
Phase velocity and group velocity, 
Time-dependent and time-independent Schrodinger wave equations, 
Physical interpretation of wave function, 
Particle in a one-Dimensional box.


Unit-2: Electromagnetic Field Theory

Basic concept of Stoke’s theorem and Divergence theorem, 
Basic laws of electricity and magnetism, 
Continuity equation for current density, 
Displacement current, 
Maxwell equations in integral and differential form, 
Maxwell equations in vacuum and in conducting medium, 
Poynting vector and Poynting theorem, 
Plane electromagnetic waves in vacuum and their transverse nature. 
Relation between electric and magnetic fields of an electromagnetic wave, 
Plane electromagnetic waves in conducting medium,
Skin depth.


Unit-3: Wave Optics

Coherent sources, 
Interference in uniform and wedge shaped thin films, 
Necessity of extended sources, 
Newton’s Rings and its applications, 
Introduction to diffraction,
Fraunhoffer diffraction at single slit and double slit, 
Absent spectra, 
Diffraction grating,
Spectra with grating, 
Dispersive power, 
Resolving power, 
Rayleigh’s criterion of resolution, 
Resolving power of grating.


Unit-4: Fiber Optics & Laser 

Fibre Optics: 
Principle and construction of optical fiber, 
Acceptance angle, 
Numerical aperture, 
Acceptance cone, 
Step index and graded index fibers, 
Fiber optic communication principle, 
Attenuation, 
Dispersion, 
Application of fiber.

Laser: 
Absorption of radiation, 
Spontaneous and stimulated emission of radiation,
Population inversion, 
Einstein’s Coefficients, 
Principles of laser action, 
Solid state Laser (Ruby laser) and Gas Laser (He-Ne laser), 
Laser applications.


Unit-5: Superconductors and Nano-Materials: 

Superconductors:  
Temperature dependence of resistivity in superconducting materials, 
Meissner effect, 
Temperature dependence of critical field, 
Persistent current,
Type I and Type II superconductors, 
High temperature superconductors, 
Properties and Applications of Super-conductors.

Nano-Materials:  
Introduction and properties of nano materials, 
Basics concept of Quantum Dots, Quantum wires and Quantum well, 
Fabrication of nano materials -Top-Down approach (CVD) and Bottom-Up approach (Sol Gel), Properties and Applications of nano materials.

Saturday, March 9, 2024

Tuesday, March 5, 2024

Wien's displacement law

                   State the Wien's displacement law? (2021-22)



Wien’s displacement law, also known as Wien’s law, describes the relationship between the wavelength of thermal radiation and the temperature at which a blackbody emits the radiation. 

According to this law, the temperature is inversely proportional to the wavelength at which the radiation has maximum intensity.

 The law was originally formulated by Wilhelm Wien in 1893.


Skin depth

 What do you understand by skin depth?


When an AC current is applied to a conductor, the current concentrates near the surface of the conductor and its strength decreases as you go towards the center of the conductor. The depth till which current flows in a conductor is called as Skin Depth.

The Skin Depth is dependent on the frequency of the current/signal and the resistivity of the material. It inversely proportional to the frequency and directly proportional to the resistivity.

The Skin Depth can be calculated using the following formula:





What is Displacement Current

 What is Displacement Current?


A changing electric field in vacuum or in a dielectric also produces a magnetic field. This implies that a changing electric field is equivalent to a current, which flows till the electric field is changing. This equivalent current produces the same magnetic effects as a conventional current in a conductor is known as displacement current.

⦁ The SI unit of displacement current is the ampere (A)

Applications:

⦁ Understanding electromagnetic waves, such as radio waves and light. 

⦁ Explaining the behavior of capacitors and their role in circuits.

Similarities and dissimilarities between conduction and displacement current

 Write the similarities and dissimilarities between conduction and displacement current.


Similarities:

⦁ Both conduction current and displacement current involve the flow of electric charge.

⦁ The unit of displacement current is the same as that of conduction current, which is measured in amperes (A).

⦁ Both produce magnetic field.


Dissimilarities:

⦁ Conduction current is due to flow of electron and Displacement current is due to change in electric field.

⦁ In free space Conduction current is zero but Displacement current is finite. (like as parallel plate capacitor)

⦁ Conduction current is Independent of frequency while Displacement Current is depends on the frequency of the changing electric field.


Saturday, March 2, 2024

ELECTRICAL ENGG MOST REPETATIVE IMPORTANT QUESTIONS

 ELECTRICAL ENGG MOST REPETATIVE 

IMPORTANT QUESTIONS


Question: Define Active and Passive elements with example.

Question: Define Unilateral and Bilateral elements with example.

Question: Explain the principle of operation of a transformer. Derive the EMF equation of single phase transformer.

Question: Why Synchronous motor is not self starting?

Question: Why single phase induction motor is not self starting . What are the different methods to make it self starting. Explain one of them.

Question: Applications of different types of DC motors.

Question: Describe different types of cables.

Question: Define : (i) MCB (ii) MCCB (iii)ELCB (iv) SFU

Question: Define Slip.

Question: Draw Phaser diagram: (i) for an ideal transformers on load.                                                    (ii) of a practical two winding transformer  in no load condition.

Question: Describe different types of transformer losses and methods to minimize it.

Question: Discuss briefly the types of batteries and explain anyone with necessary diagram.

Question: Derive: (i) EMF equation of the DC generator. 

(ii) the torque eqaution for DC machines. 

Question: What are the common problems that occur during electrical installations.

Question: What are the factors affecting speed of a DC motor? Compare lap and wave type armature winding.



To be continued...