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The number of commutator segments in a group can vary depending on the specific group in question. In general, the commutator segment of a group is defined as the subgroup generated by all commutators of the group. For a given group, the number of commutator segments can be infinite if the group has an infinite number of non-abelian elements, or it can be finite for specific finite groups. To determine the exact number of commutator segments for a particular group, one would need to analyze its structure and properties.
What else can I help you with?
What is the use of Commutator?
The commutator is used to convert the AC to DC
What is six segments?
Crabs have six segments. Segments are how many parts of the crab they have.
How many segments does arachnida have?
arachnida has 15 segments
How many segments do we have?
People, like many animals, have three segments: the head, the thorax, and the abdomen.
How many line segments are in a star?
There are 9 line segments.
Why commutator are not used in ac motors?
Because, the commutator segments are used for converting AC to DC.
Name two reasons for arcing at the commutator?
1) When the armature is open. 2) When the Field is open. 3) Commutator segments are internally short.
What material used to make a commutator?
A commutator is typically made from a combination of materials, primarily copper for its excellent electrical conductivity. The segments of the commutator are often insulated with a dielectric material, such as mica or plastic, to prevent short circuits between the conductive segments. In some cases, the commutator may also be coated with materials like silver to enhance conductivity and reduce wear.
Why carbon brushes are most used in dc?
Carbon is used because it is soft and does not damage the commutator. This means that the brushes must be replaced at intervals, and the powdered carbon scraped out from between the segments of the commutator.
What is binding pitch and commutator pitch?
Binding pitch is the distance between two consecutive groups of coils in a stator, while commutator pitch is the distance between two consecutive segments in a DC motor's commutator. Both pitches are essential for the proper functioning of the motor and determine its performance characteristics.
Why is it desirerable to have a many coils of wire and commutator segments on the armature of a d-c generator?
The short answer is that with more individual coils in the rotor (and the increased number of commutator segments necessary to support them), the motor will run more smoothly. At each transition, the rotor will want to slow down a bit, but with a large commutator and lots of coils in the armature, the motor will transition more quickly to the next segment (for a given RPM) than a motor with fewer segments. The motor runs more smoothly. The drawback in making a motor like this is the increase in cost. A more economical motor is constructed using fewer windings in the rotor. The trade offs must be considered based on application and the economics of that application.
How commutator converts AC to DC?
There is no conversion of AC to DC a commutator is the key to creating straight DC voltage. "The commutator rotates with the loop of wire just as the slip rings do with the rotor of an AC generator. Each half of the commutator ring is called a commutator segment and is insulated from the other half. Each end of the rotating loop of wire is connected to a commutator segment. Two carbon brushes connected to the outside circuit rest against the rotating commutator. One brush conducts the current out of the generator, and the other brush feeds it in. The commutator is designed so that, no matter how the current in the loop alternates, the commutator segment containing the outward-going current is always against the "out" brush at the proper time. The armature in a large DC generator has many coils of wire and commutator segments. Because of the commutator, engineers have found it necessary to have the armature serve as the rotor(the rotating part of an apparatus) and the field structure as the stator (a stationary portion enclosing rotating parts). Which is the inverse of an AC Generator."
Can a DC motor work on an AC supply?
There is a motor that is known as Universal motor which works on DC or AC .You might find one in a drilling machine or a domestic grinding machine .But there is a disadvantage ,in that there will be sparking at the commutator between the brushes and the commutator segments due to a shift in the magnetic neutral axis while on AC operation.
What should you read between the commutator segments at a static condition Ohms OR short circuit?
In a static condition, the readings between commutator segments should ideally show zero volts or very low resistance, indicating that there is no significant current flowing due to an open circuit or a short circuit. If you observe a voltage reading, it could suggest a potential issue, such as a short circuit between segments. Conversely, if the resistance is too high or infinite, it might indicate an open circuit. Always ensure to compare readings against the manufacturer's specifications for accurate diagnosis.
Where is pigtail located on a dc generator?
In a DC generator, the pigtail is typically located at the commutator end of the machine. It is a short wire or connection that links the armature winding to the commutator segments, allowing for the transfer of generated electrical current to the external circuit. The pigtail ensures good electrical contact and facilitates efficient operation of the generator.
What is use of commutator?
The commutator is used to convert the AC to DC
What is the use of Commutator?
The commutator is used to convert the AC to DC
