'External resistance' presentation slideshows

Induction Motors

Induction Motors. Introduction. Three-phase induction motors are the most common and frequently encountered machines in industry simple design, rugged, low-price, easy maintenance wide range of power ratings: fractional horsepower to 10 MW

1.71k views • 41 slides

Chapter 28

Chapter 28. Direct Current Circuits. TexPoint fonts used in EMF. Read the TexPoint manual before you delete this box.: A A A A A A. Introduction. Simple electric circuits may contain batteries, resistors, and capacitors in various combinations .

569 views • 41 slides

Chapter 5. Electric Machines

Chapter 5. Electric Machines. 5.1 Introduction. One of energy can be obtained from the other form with the help of converters. Converters that are used to continuously translate electrical input to mechanical output or vice versa are called electric machines .

1.13k views • 32 slides

Topic 5.2 Electric Circuits

Topic 5.2 Electric Circuits. 3 hours. Electromotive Force. We define the electromotive force ( emf or e ) as the work per unit charge made available by an electrical source .

412 views • 28 slides

Functional Fitness at 50 and Older

903 views • 22 slides

CoPF V POWER, SPEED & ACCELERATION (sub components)

350 views • 21 slides

Speed Control in DC Motors

Speed Control in DC Motors. Shunt motor : Electromagnetic torque is T e = K a f d I a , and the conductor emf is E a =V t - R a I a . For armature voltage control: R a and I f are constant For field control: R a and V t are constant

1.03k views • 20 slides

Internal Resistance

Internal Resistance. e lectro m otive f orce revisited. Remember the e.m.f.( ? ) is the amount of energy given by the cell to each coulomb of charge passing through it. It is measured in volts. Where ? is the e.m.f. (V) E is the energy given (J) Q is the charge (C). Question.

212 views • 12 slides

* is the opposition to charge moving through a source of electricity

5.3 Emf and internal resistance. Internal resistance. * is the opposition to charge moving through a source of electricity * causes electrical energy to be dissipated inside the source as charge moves through it. Producing heat !. Electromotive force of a source.

206 views • 8 slides