Definition and description of N Channel JFET.
DEFINITION OF JFET. CONSTRUCTION OF JFET. OPERATION OF JFET. CHARACTERISTICS OF JFET. SQUARE LAW EXPERSSION.
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.
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.