PPT-Alternating-Current Circuits

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. 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.. 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.. 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, . Brightness of lamps is depended upon the ______________ in a circuit. When all current travels in all of the devices, said to be in . Series. B/c current travels through all, current is same through out. Pre-Activity Discussion. © 2014 Project Lead The Way, Inc.. Digital Electronics. This Presentation Will…. 2. Introduce you to basic circuits and their symbols.. Introduce you to components and equipment that are fundamental to understanding circuits.. Electromagnetic Force. The current in a circuit is driven by…. Generally, what . is needed for motion to take place?. Consider that electric current is the movement of electrons. what is the tension (pressure) on the current?. Announcements. Website update. Web version of homework Set 1 (now complete). I have posted solutions to . Rubinson. & . Rubinson. problems of set 1.1. I will post a data set soon for HW 1.2 problem. 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.. 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 . 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.