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How ac generators and dc generators are alike and how they are different?
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They both have rotor and stator windings. They create a magnetic field and move a coil of wire through it, thus producing electricity.
The AC generator rotates a mageting field inside the stator. As the poles have both a north and south end, the field generated in staor coils is an AC waveform, as the poles reverse the current at each half turn. The power for the rotating coils are supplied with DC current via slip rings and the (excitation) current can be varied to control the output.
A DC generator has the magnetic field supplied by the stator coils. The induced current of the rotor windings is taken from the rotating shaft via a commutator, a brush and secored contact area. The induced current therefore is only produced over a small arc of the rotor and thus has the same polarity, (albeit interrupted) DC.
Wiki User
∙ 9y ago
Wiki User
∙ 9y agoThey both convert mechanical power into electrical power.
DC generators have a static field winding and a rotating armature that has its current fed through a commutator, which is a set of copper segments connected via carbon brushes, which tend to need frequent replacement.
AC generators have the main winding in the stator, with a DC current in the rotor winding. In this case the commutator is replaced by smooth slip-rings, also fed by carbon brushes, but they last a lot longer. This is also the preferred generator for a car's electrical system, with a 6-diode rectifier
NEW
Both convert mechanical energy into electrical with the help of magnetic field.
In AC there is a slip ring but in DC there is a Split ring.
So in ac we get alternative current. Here alternate stands for the direction of flow. Current changes direction for every half rotation.
But in dc we have direct current. It means that current flows in the same direction for both half rotations.
Wiki User
∙ 12y agoFor AC generators slip ring commutators are use but in case of dc generators split ring commutators are used for converting AC generated in the armature to DC
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Which is the device that converts AC to DC?
A Rectifier converts Alternating current into Direct current
What is the different between ac dc motors?
DC Motor works on DC source and AC motor works on AC source
What are the different voltages for DC?
Like AC, DC can be at any voltage.
What are the problems of commutation in a DC generator?
1.resistance commutation 2.e.m.f commutation
What are all the drawbacks of Direct current?
Disadvantages of DC: * High power transformation of voltage is less convenient than AC. AC uses a transformer. * DC does not have the natural break in transmission that AC has (zero twice per cycle) and does not switch off as easily * DC does not provide time to synchronous clocks * DC dynamos or generators are less efficient at converting input power to output electricity than AC alternators. That is why altenators with rectifiers are now used in vehicles instead of DC dynamos.
Is it diesel generators is DC or AC generators?
Most diesel generators are designed to produce alternating current (AC) electricity. However, there are some diesel generators that can also produce direct current (DC) electricity with the help of rectifiers or inverters.
Are DC generators more expensive then AC generators?
DC generators require more time and material to make. Because of this, it will be cheaper to purchase an AC generator. DC generators are typically a better product as well, and you get what you pay for.
How the output characteristics of AC and DC generators vary from each other?
AC generators have a varying waveform which is sinusoidal in nature, whereas a DC output is linear.
Common parts of ac and dc generators?
There is not the big different between AC and DC generator and the common part of both of them areRotorStaterFrameMagnetic FieldBarringShaftWinding (Lap or Wave)Cable boxThe big different between both of them is the commutator and split rings which we use to convert DC to AC.
Why not you use ac instead of dc to electronic components?
AC is easier and cheaper to send from the generators to the consumers than DC is.
Which is the device that converts AC to DC?
A Rectifier converts Alternating current into Direct current
How the output characteristics of AC and DC generator vary from other?
AC generators have a varying waveform which is sinusoidal in nature, whereas a DC output is linear.
What IS AC DC?
AnswerThere is a hard rock band called AC/DC .In electrical jargon, AC is short for alternating current and DC is short for Direct current.
Types of generators?
By the operation supply 1.AC generator 2.DC generator In DC generator we are having the following types according to the construction 1.DC Series Generator 2.DC shunt Generator 3.DC Compound Generator
What is the different between ac dc motors?
DC Motor works on DC source and AC motor works on AC source
What are the devices that make used of electromagnet?
AC/DC Motors, Generators etc. are the devices that make Used of electromagnets.
Difference between AC and DC generator?
The major difference between an AC generator and a DC generatoris that the DC generator requires a mechanism to provide a DC output. This can be done mechanically with a commutator or electronically with a rectifier. Internally, all generators produce an alternating voltage. Allgeneratorsrequire a magnetic field.
