![Line Conductors](http://s1.studyres.com/store/data/019528740_1-4d1dcff9b93d3a4266c515faeef95c1e-300x300.png)
Line Conductors
... if q is positive then those points closer in have a higher voltage. Voltage is defined as the energy (in Joules) required to move a 1 coulomb charge against an electric field (Joules/Coulomb). Voltage is infinite if we pick infinity as the reference point ...
... if q is positive then those points closer in have a higher voltage. Voltage is defined as the energy (in Joules) required to move a 1 coulomb charge against an electric field (Joules/Coulomb). Voltage is infinite if we pick infinity as the reference point ...
WEEK 3-4: DIRECT CURRENT GENERATOR
... thus creating shaft torque in a rotating machine as well as generate an electromotive force (EMF). Some call it “The power-producing component” of an alternator, generator, dynamo or motor. Commutator: built on the shaft of the rotor at one end of the core. Made of copper bars insulated by mica. The ...
... thus creating shaft torque in a rotating machine as well as generate an electromotive force (EMF). Some call it “The power-producing component” of an alternator, generator, dynamo or motor. Commutator: built on the shaft of the rotor at one end of the core. Made of copper bars insulated by mica. The ...
Physics, Chapter 34: Alternating Currents
... any current is flowing through it, but is rather to be applied to the steady state when an alternating current has been established. These phase relationships may be described with the aid of appropriate vectors. If the maximum value of the current is drawn as a vector in the +x direction, the maxim ...
... any current is flowing through it, but is rather to be applied to the steady state when an alternating current has been established. These phase relationships may be described with the aid of appropriate vectors. If the maximum value of the current is drawn as a vector in the +x direction, the maxim ...
4040
... Figure 1: A passive PFC circuit requires only a few components to increase efficiency, but they are large due to operating at the line power frequency. ...
... Figure 1: A passive PFC circuit requires only a few components to increase efficiency, but they are large due to operating at the line power frequency. ...
(MR15 Regulations)II Mid Examination
... a)INFINITY b) zero c) 45 deg d) 90 deg lag 2. What is the total reactance of a series RLC circuit at Resonance a) Zero b) equal to XL c) equal to Xc d) R 3. The magnitude & phase of current vector is depend on the values of a) R d) L c) C and f d) all of the above 4. If the Band width is low the sel ...
... a)INFINITY b) zero c) 45 deg d) 90 deg lag 2. What is the total reactance of a series RLC circuit at Resonance a) Zero b) equal to XL c) equal to Xc d) R 3. The magnitude & phase of current vector is depend on the values of a) R d) L c) C and f d) all of the above 4. If the Band width is low the sel ...
4.1 The Concepts of Force and Mass
... as if it were a source of emf. This emf is known as the induced emf. ...
... as if it were a source of emf. This emf is known as the induced emf. ...
Inductor
![](https://commons.wikimedia.org/wiki/Special:FilePath/Electronic_component_inductors.jpg?width=300)
An inductor, also called a coil or reactor, is a passive two-terminal electrical component which resists changes in electric current passing through it. It consists of a conductor such as a wire, usually wound into a coil. When a current flows through it, energy is stored temporarily in a magnetic field in the coil. When the current flowing through an inductor changes, the time-varying magnetic field induces a voltage in the conductor, according to Faraday’s law of electromagnetic induction, According to Lenz's law the direction of induced e.m.f is always such that it opposes the change in current that created it. As a result, inductors always oppose a change in current, in the same way that a flywheel oppose a change in rotational velocity. Care should be taken not to confuse this with the resistance provided by a resistor.An inductor is characterized by its inductance, the ratio of the voltage to the rate of change of current, which has units of henries (H). Inductors have values that typically range from 1 µH (10−6H) to 1 H. Many inductors have a magnetic core made of iron or ferrite inside the coil, which serves to increase the magnetic field and thus the inductance. Along with capacitors and resistors, inductors are one of the three passive linear circuit elements that make up electric circuits. Inductors are widely used in alternating current (AC) electronic equipment, particularly in radio equipment. They are used to block AC while allowing DC to pass; inductors designed for this purpose are called chokes. They are also used in electronic filters to separate signals of different frequencies, and in combination with capacitors to make tuned circuits, used to tune radio and TV receivers.