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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.
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.
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 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
What causes three phase induction motor fails to start?
One possable reason for failure to start could be as simple as a brush not making contactwith the commutator. Also if the commutator segments are dirty this could also contribute to the problem
What is six segments?
Crabs have six segments. Segments are how many parts of the crab they have.
How many line segments are in a line?
there are infinitely many segments in a line.
How many segments does arachnida have?
arachnida has 15 segments
