PPT-What is the Alternating Current (

AC Why the AC generated What is the need for an AC circuit Alternating Current Waveforms Different Alternating Sinusoidal Current Waveform Generators There are 2 types of Current DC Direct Current . Electricity supplied from a battery will be DC but that supplied from the public electricity supply is AC AC has the advantage that it can be transformed to higher voltages where losses in its transmission are significantly lower than those hat woul PHASE . A.C . CIRCUITS. ELECTRICAL ENGG SCIENCE. . CHAPTER - 6. CONTENT. 1. Generation . of alternating voltage and current . . 2. Different . forms of E.M.F equations. . 3. A.C . through R, L and C and power factor . Chapter. 31. Copyright © 2014 John Wiley & Sons, Inc. All rights reserved.. 31-1. Electromagnetic . Oscillations. 31.01 . Sketch an LC oscillator and explain which quantities oscillate and what constitutes one period of the oscillation.. pp 793 - 820. Essential Questions. How can current be produced without a power source?. How do motors work?. How is mechanical energy converted to electrical energy?. Objective(s. ): We will . be able to…. Chapter. 31. Copyright © 2014 John Wiley & Sons, Inc. All rights reserved.. 31-1. Electromagnetic . Oscillations. 31.01 . Sketch an LC oscillator and explain which quantities oscillate and what constitutes one period of the oscillation.. Learning Outcomes. Distinguish between alternating and direct current.. State . the frequency of UK mains electricity.. Describe . how the potential of the live wires varies each cycle.. State . that the potential of the neutral wire is approximately . Read pages 439 - 454. AC Generator. As the ring rotates within the magnetic field, what happens?. Sketch a graph to show how the rotation of the ring will affect the reading on the attached voltmeter.. Calc. BC. Objectives. Use the Alternating Series Test to determine whether an infinite series converges.. Use the Alternating Series Remainder to approximate the sum of an alternating series.. The simplest series that contain both positive and negative terms is an . Key Points. Ohm’s Law. Resistivity. Electric Power. Alternating Current. References. . 18-1,2,3,4,5,6,7. Electric current is the rate of flow of charge through a conductor:. Unit of electric current: the ampere, . Means of power for many appliances we rely on to work in our homes, schools, offices, etc.. Circuits put together all components we have previously seen including resistors, inductors, and capacitors and are driven by a sinusoidal voltage.. No Class on Wednesday March 8. Labs taught by Dr. . Mahes. on Monday and Tuesday.. No quiz on . Friday, March 10. Exam 2 on Friday, March 24, study guide posted online. Current from a battery flows steadily in one direction (direct current, DC). Current from a power plant varies sinusoidally (alternating current, AC).. What is the need for an AC circuit?. The generation of single phase voltage.. The relation between time and angle.. The maximum, average and effective value.. The form factor and peak factor.. Phasor representation of sinusoidal waveform.. Direct current (DC) circuits involve current flowing in one direction.. In alternating current (AC) circuits, instead of a constant voltage supplied by a battery, the voltage oscillates in a sine wave pattern, varying with time as v=V sin . sinusoidally. with time as given by:. E = E. max . sin . q. i. = . i. max . sin . q. AC-voltage and current. E. max. i. max. time, t. Rotating Vector Description. q. 45. 0. 90. 0. 135. 0. 180. 0. 270.