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What is a Generator consisting of a coil that rotates between the electromagnet causing a current to flow in the armature?
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∙ 14y ago
dynamo
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∙ 14y ago
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What is coil span factor and distribution factor?
coil span or coil pitch is defind as the distance mesured in terms of armature slots(or armature conductors) between two sides of a coil.
What is difference between generator and oscillator?
A generator is used to convert mechanical energy to electrical energy. An oscillator is used to convert dc to ac
Will a DC motor actually produce voltage if it is spun in reverse?
AnswerIt'll produce voltage if you spin it forwards, too. The only difference between a DC motor and a DC generator is what you use it for.A long time ago, cars had DC generators on them instead of AC alternators. When you replaced a generator, you had to "polarize" it so it would make electricity. You hooked it up to your battery and let it run, as a motor, for a few seconds. Don't try that with an alternator because you'll break it.If you're looking for a neat little elementary-school science project, you can use little Radio Shack electric motors as generators for things like windmills, water wheels, dynamos turned by bicycle tires...Actually, yesA motor works by passing current through the conductors of an electromagnet (the rotor or armature) suspended in the magnetic field of a permanent magnet (or another electromagnet). The rotor is the moving part, that is, the part that spins. If instead of energizing the rotor's windings, you turned the rotor by hand, you would indeed induce a current in the rotor's windings. Basically you have created a generator.Motors work on the basic principle of a current going through a conductor producing a magnetic field around the conductor. If you reverse that you have a magnetic field around a conductor which produces current.
What is the similarities between a bar magnet and a electromagnets?
Both are magnets, but an electromagnet needs electricity to become a magnet. Hence, a magnet is also the same as a electromagnet.Also a magnet Will attract ferrous metals as will an electromagnet, when switched on!
What is the relationship between generators and motors?
Both generator and motor are energy converters. Subject to losses, both convert one form of energy into another. All motors and generators use a form of motion on one side of their energy conversion process (typically, but not necessarily, rotary motion). For example, a petrol engine is a motor that converts combustible fuel into rotary motion, an electric generator converts (typically rotary) motion into electric energy. Complimentary motor/generator pairs are only possible among certain forms of energy. For example, an electric motor can be connected to a generator, thus converting electric energy into rotary motion, and converting rotary motion back into electric energy. Other complimentary motor/generator pairs are only possible by indirection. For example, a wind turbine converts wind energy into rotation, which can be converted into electric energy with an (electric) generator. This generator's output can then supply an electric motor, which converts it into rotary motion, which in turn might drive a fan blade, thus converting rotary motion into wind energy. Not all energy forms support complimentary motor/generator pairs. Combustible fuels such as petrol, for example, can be converted into rotary motion which a combustion engine. However, a generator capable of converting rotary motion into combustible fuel has yet to be invented.
Generator consisting of a coil that rotates between the poles of an electromagnet?
dynamo
A moveable coil or wire found between the poles of a magnet in a generator?
The armature.
What are the effect of armature reaction in DC machine and how the armature reaction is minimise?
Armature reaction is the interaction between the magnetic flux produced by armature current and that of the main magnetic field in an electric motor or generator.
What is the difference between a seperately excited DC generator and DC shunt generator?
The difference between a separately excited DC generator and a Shunt DC generator is that for a separately excited Dc generator , the excitation field winding is supplied by an external source different from that supplying the armature while for shunt generator, the excitation field windind is connected in series with the armature and supplied by a single source.
What are the Difference between dc motor and dc generator?
a motor Will do work by consuming power a generator is just the opposite
How does a small generator produce current?
It doesn't! It produces voltage. It does this by the relative movement between an armature (winding into which a voltage is induced) and a magnetic field (set up by field windings). Either the armature rotates inside a fixed field (small generators) or the field rotates within a fixed armature (larger generators).Current is only supplied when a load is connected to the generator.
What is the difference between electromagnets and electric generators?
Really oversimplifying it: an electromagnet converts electric current to a magnetic field and an electric generator converts mechanical rotation to an electric voltage. An electromagnet has no moving parts while an electric generator is composed of a stationary part called the "stator" and a rotating part called the "rotor". An electric generator may contain either permanent magnets or electromagnets, depending on the type of generator.
How could the electromagnet and the regular magnet generate electricity?
Before going to the answer first I'd like to tell that Magnet alone cannot produce electricity. We need an armature. Armature contains poles. Consider that armature is placed in between the magnetic poles(North and south poles) and let it face any direction. Due the magnetic field the armature tend to move towards anyone pole in order to make its direction coherent with the magnetic field direction. It results that armature is aligned with the magnetic field direction(lets say facing North). Then the other pole(South pole) tend to attract the armature to align in its direction say(facing South). This results in rotation of the armature in the magnetic field. due to this rotation of armature cuts the flux there emf is produced. This emf cause the current in that construction. This is how the electricity is produced using any magnet called Electromagnet or Permanent magnet.
Difference between 12volt armature and 24 volt armature?
24 volt armature is accept balancing cut
How the generator and motor works ALTERNATING CURRENT GENERATORS BASIC AC GENERATORS Regardless of size all electrical generators whether dc or ac depend upon the principle of magneticinduction.?
An emf is induced in a coil as a result of (1) a coil cutting through a magnetic field, or (2) a magnetic field cutting through a coil. As long as there is relative motion between a conductor and amagnetic field, a voltage will be induced in the conductor. That part of a generator that produces the magnetic field is called the field. That part in which the voltage is induced is called the armature. Forrelative motion to take place between the conductor and the magnetic field, all generators must have two mechanical parts - a rotor and a stator. The ROTor is the part that ROTates; the STATor is the part that remains STATionary. In a dc generator, the armature is always the rotor. In alternators, the armature may be either the rotor or stator. ROTATING-ARMATURE ALTERNATORSThe rotating-armature alternator is similar in construction to the dc generator in that the armature rotates in a stationary magnetic field as shown in figure 3-1, view A. In the dc generator, the emf generated in the armature windings is converted from ac to dc by means of the commutator. In the alternator, the generated ac is brought to the load unchanged by means of slip rings. The rotating armature is found only in alternators of low power rating and generally is not used to supply electric power in large quantities.
Remedies for Armature reaction?
Since an armature is wound with coils of wire, a magnetic field is set up in the armature whenever a current flows in the coils. This field is at right angles to the generator field, and is called cross magnetization of the armature. The effect of the armature field is to distort the generator field and shift the neutral plane. The neutral plane is the position where the armature windings are moving parallel to the magnetic flux lines. This effect is known as armature reaction and is proportional to the current flowing in the armature coils. The brushes of a generator must be set in the neutral plane; that is, they must contact segments of the commutator that are connected to armature coils having no induced emf. If the brushes were contacting commutator segments outside the neutral plane, they would short-circuit "live" coils and cause arcing and loss of power. Armature reaction causes the neutral plane to shift in the direction of rotation, and if the brushes are in the neutral plane at no load, that is, when no armature current is flowing, they will not be in the neutral plane when armature current is flowing. For this reason it is desirable to incorporate a corrective system into the generator design. These are two principal methods by which the effect of armature reaction is overcome. The first method is to shift the position of the brushes so that they are in the neutral plane when the generator is producing its normal load current. in the other method, special field poles, called interpoles, are installed in the generator to counteract the effect of armature reaction. The brush-setting method is satisfactory in installations in which the generator operates under a fairly constant load. If the load varies to a marked degree, the neutral plane will shift proportionately, and the brushes will not be in the correct position at all times. The brush-setting method is the most common means of correcting for armature reaction in small generators (those producing approximately 1000 W or less). Larger generators require the use of interpoles.
What is the difference between armature reaction and armature reactance?
armature reactant means loss in armature associated with inductive properties of the coil, while armature reaction include losses due to magnetizing component of current flowing through armature.
