Knowledge in 1st semester on viden.io

Knowledge in 1st semester

Wheel Organ Structure ( Zoology / Biology )

Here the structure and position of Wheel Organ in Branchiostoma. It is included in the syllabus of B.Sc. Honours 1st Year (Zoology) under Calcutta University.

Wheel Organ +6 more

Nabhonil Biswas

Oscillations and Waves.

CONTENTS I. Free Oscillations 1. Definition of SHM 2. Derivation of Equation for SHM 3. Mechanical Simple Harmonic Oscillations  Mass Suspended to Spring Oscillator 4. Complex Notation and Phasor Presentation of SHM 5. Equation of Motion for Free Oscillations 6. Natural Frequency of Oscillations 7. Numerical Problems II. Damped and Forced Oscillations 1. Theory of Damped Oscillations  Over Damping, Critical and Under Damping 2. Quality Factor 3. Theory of Forced Oscillations and Resonance 4. Sharpness of Resonance (One Example for Mechanical Resonance) 5. Numerical Problems III. Shock Waves 1. Mach Number 2. Properties of Shock Waves 3. Control Volume 4. Laws of Conservation of Mass, Momentum and Energy 5. Construction and working of Reddy Shock Tube 6. Applications of Shock Waves 7. Numerical Problems

B.E. +10 more

Anusha M.S.

Elastic Properties of Materials.

I. Elasticity 1. Concept of Elasticity, Plasticity, Stress, Strain, Tensile Stress, Shear Stress, Compressive Stress, Strain Hardening and Strain Softening 2. Hooke’s Law 3. Failure (Fracture/Fatigue) 4. Effect of stress, temperature, annealing and impurity on elasticity 5. Importance of Elasticity 6. Different Elastic Moduli- Young’s Modulus(Y), Bulk Modulus(K), Rigidity Modulus(n) 7. Poisson’s Ratio(σ) 8. Expression for Young’s Modulus(Y), Bulk Modulus(K), Rigidity Modulus(n) 9. Relation Between the Elastic Constants  Relation Between Shearing Strain, Elongation Strain and compression Strain  Relation Between Y, n and σ  Relation Between K, Y and σ  Relation Between K, n and Y  Relation Between K. n and σ 10. Limits of Poison’s II. Bending of Beams 1. Neutral Surface or Neutral Plane 2. Derivation an Expression for Bending Moment 3. Bending Moment of a Beam With Circular and Rectangular Cross Section 4. Derivation an Expression for Young’s Modulus Using Single Cantilever III. Torsion of Cylinder 1. Expression For Couple Per Unit Twist of a Solid Cylinder 2. Torsional Pendulum-Expression for Period of Oscillation 3. Numerical Problems.

B.E. +8 more

Anusha M.S.

Maxwell’s Equations, EM Waves and Optical Fibers

I. Maxwell’s Equations 1. Introduction to Vectors 2. Fundamentals of Vector Calculus 3. Divergence and Curl of Electric Field and Magnetic Field 4. Linear, Surface and Volume Integral 5. Description of Law of Electrostatics, Magnetism and Faraday’s Laws of EMI (a) Gauss’ Law in Electrostatics (Gauss Divergence Theorem) (b) Gauss Law of Electricity (Maxwell’s First Equation/Divergence Theorem) (c) Gauss’ Law of Magnetism (Maxwell’s Second Equation) (d) Faraday’s Law (Maxwell’s Third Equation) (e) Ampere’s Law (Maxwell’s Fourth Equation) (f) Biot-Savart’s Law 6. Current Density, Equation of Continuity and Displacement Current 7. Maxwell’s Equations in Vacuum II. EM Waves 1. The Wave Equation in Differential Form in Free Space 2. Plane Electromagnetic Waves in Vacuum 3. Transverse Nature of EM Waves 4. Polarization of EM waves III. Optical Fibers 1. Propagation Mechanism 2. Angle of Acceptance and Numerical Aperture 3. Modes of Propagation and Types of Optical Fibers 4. Attenuation: Causes of Attenuation & Expression For α 5. Point to Point Communication 6. Merits and Demerits 7. Numerical Problems.

B.E. +5 more

Anusha M.S.

Quantum Mechanics & LASER.

CONTENTS I. Quantum Mechanics 1. Introduction to Quantum Mechanics  Introduction  Planck’s Law for Energy Density 2. Wave Nature of Particles  de Broglie’s Hypothesis (De Broglie’s Concept of Matter Wave)  de Broglie’s Wavelength  de Broglie’s Wavelength - Extended to Accelerated Electron 3. Heisenberg’s Uncertainty Principle and Applications  Statement with three equations  Application of Heisenberg’s Uncertainty Principle (Non-confinement of the Electrons in the Nucleus) 4. Schrodinger’s Time Independent Wave Equation 5. Applications of Schrodinger’s Wave Equation  Particle in an One Dimensional Potential Well of Infinite Height  Eigen Values, Eigen Function & Probability Density for Ground State & First Two Excited States 6. Wave Function  Statement  Physical Significance (Probability Density-Max Born Interpretation & Normalization)  Properties of Wave Function 7. Numerical Problems II. LASER 1. Review of Spontaneous & Stimulated Processes 2. Energy Density Using Einstein’s Coefficients 3. Requisites of a Laser System 4. Condition for Laser Action 5. Principle, Construction & Working of CO2 Laser 6. Principle, Construction & Working of Semiconductor Laser 7. Applications of Lasers  Laser Range Finder (Defense)  Data Storage (Engineering) 8. Numerical Problems.

B.E. +7 more

Anusha M.S.

Definition and description of N Channel JFET.

DEFINITION OF JFET. CONSTRUCTION OF JFET. OPERATION OF JFET. CHARACTERISTICS OF JFET. SQUARE LAW EXPERSSION.

B.E. +5 more

Anusha M.S.

AUTOMATION (BASICS OF MECHANICAL ENGINEERING.)

Fixed Automation or Hard Automation Programmable or Soft Automation Flexible Automation Basic Elements of Automated System 1. Power source a. Power for Processes (Manufacturing Processes, Loading and unloading, Transporting work units, etc.) b. Power of Automation (Controller unit, Power to actuate control signals, Data acquisition and information processing) 2. A program of instructions (Part Programs) 3. A control system (Closed loop and Open loop systems. Advantages of Automation. Disadvantages of Automation. Numerical Control. Elements of a CNC System.

B.E. +5 more

Anusha M.S.

c notes

This folder consist individual topics covered in c programming which is for 1st year b.tech student , this subject is not only for computer science's student but also for all stream. This subject for essential for all btech student .

C notes +3 more

Rohit Pathak