and compare with single-phase. 8. Describe the relationships between the individual output and resultant vectorial sum voltages in multiphase generators. 9. Explain‚ using diagrams‚ the different methods of connecting three-phase alternators and transformers. 10. List the factors that determine the frequency and voltage of the alternator output. 11. Explain the terms voltage control and voltage regulation in ac generators‚ and list the factors that affect each quantity. 12. Describe the purpose and
Premium Electric motor
How a Microwave Works By Zach Betten [pic] What is a Microwave? A microwave oven or microwave is a kitchen appliance that cooks or heats food by using electromagnetic waves. This happens by using microwave radiation to heat materials such as water and other things within the food. This leads to food being more evenly heated throughout. Basic microwave ovens heat food quickly and efficiently. One setback is that they do not brown or bake food in
Free Microwave oven Microwave Electromagnetic radiation
See TALKING ELECTRONICS WEBSITE email Colin Mitchell: talking@tpg.com.au For our other free eBooks: 50 - 555 Circuits 1 - 100 Transistor Circuits 101 - 200 Transistor Circuits 100 IC Circuits For a list of every electronic symbol‚ see: Circuit Symbols. For more articles and projects to suit the hobbyist: see TALKING ELECTRONICS WEBSITE INTRODUCTION This e-book covers a number of interesting circuits. They have been presented for
Premium Capacitor Resistor Transistor
Construction of Paper-and-Pencil Test School: Kingston College Subject: Physics Grade: 11-1 Date: October 23‚ 2013 Duration: 2.5 hours INSTRUCTION TO CANDIDATES You are allowed ten (10) minutes to read the instructions and write your name‚ date and ID number on the answer sheets provided. Answer ALL questions in EACH section.
Premium Rectifier
voltage monitoring activity which required no skill but only extensive labour. He also came up with a brilliant idea when he was asked to install remote oil temperature indicators in transformers at our substation. After implementing his idea‚ we were required to install temperature indicators in only one transformer out of eleven. This idea was later adopted organization wide‚ saving the cost and time to install indicators in more than 200
Premium Management The Substation Kuo Pao Kun
Conductors and Insulators of Electricity A major reason electricity works is because of conductors. First metal‚ water‚ tall trees and tall items are good conductors because lightning is attracted to them. These materials have many mobile electrons. Metal is an easy substance for lightning to travel through so metals are good conductors. However‚ rubber is a bad conductor because lightning bounces off of it. A bad conductor is called an insulator. An insulator has a few mobile electrons. It is
Premium Electricity Electric charge Electronic engineering
In 1831‚ Faraday made one of his most renowned discoveries‚ the principle of electromagnetic induction by using the "induction ring". The electricity was generated by means of electromagnetic effect. This was the first version of an electric transformer. He further discovered that magneto electric induction produced electric current on a continuous basis. Through a sliding contact to a disc made of copper‚ Faraday attached two wires. He rotated the disc between the two poles (north and south)
Premium Electromagnetism Magnetic field Electric current
importance of slack bus and YBUS based analysis‚ constraints involved‚ load flow equations‚ GS method: algorithms for finding the unknowns‚ concept of acceleration of convergence‚ NR method- algorithms for finding the unknowns‚ tap changing transformers‚ Fast decoupled load flow‚ illustrative examples] REVIEW OF NUMERICAL SOLUTION OF EQUATIONS The numerical analysis involving the solution of algebraic simultaneous equations forms the basis for solution of the performance equations in computer
Premium Electric power transmission Numerical analysis Electrical engineering
1. INTRODUCTION 1.1 Scope of project: Today automation used in every industrial and many other application such as loading ‚shifting the material in various application point and also transferring the material from one place to another place for saving time ‚cost ‚labor work‚ and do not cause any damage to the material while shifting the material. Scientific automation includes integration of additional functions in the software PLC. In addition to sequential control‚ motion control
Premium Conveyor belt
A fire occurred in a transformer vault that supplied power to a pesticide storage warehouse. The warehouse also caught fire. The warehouse was located in a rural area. There was a river adjacent to the warehouse that was the source of drinking water for a town downstream of the warehouse. The chemical products that were used in the transformer and the chemicals that were stored in the warehouse were all industrial strength and were supposed to be handled with extreme caution. All of these chemicals
Premium Oxygen Sulfuric acid Water