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What is the main material in a motor armature?
Instead of a single piece of metal, the armature is made up of laminated thin metal plates. The thickness of the laminations is determined by the supply frequency. They are approximately 0.5mm thick. For the armature core, silicon steel laminates are used to reduce eddy currents and hysteresis losses.
Why armature core is laminated in dc machine?
to reduce the eddy current loss in the machine
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 armature current?
Armature current is the current flowing in a motor's armature. The "armature" is another name for the coil (or coils) of wire which are on the motor's "rotor", which is the part that rotates inside its stator. (The "stator" is the fixed, non-rotating part of the motor.)
Why the induction motor does not have armature reaction?
Because the armature (or rotor) has no external connection. The currents that produce torque from the rotor are induced by the magnetic field in the machine, so there is no commutator, no brushes and no armature reaction.
What is the function of armature core in dc generator?
this is wer the armature conductors ar being mounted,therefor it helps the flexibility of armature conductors.
What is the function of the core?
the function of core is to provide path to magnetic flux,a core may be armature core or may be transformer core
Why is there usually an air gap between armature of a solenoid and the stationary core?
The air gap between the armature of a solenoid and the stationary core is necessary to prevent the armature from being permanently attracted to the core. This gap allows for a controlled movement of the armature, enabling it to return to its original position when the solenoid is de-energized. Additionally, the air gap helps to reduce magnetic saturation in the core, improving the overall efficiency and responsiveness of the solenoid's operation.
What is the function of armature winding of a motor?
Armature is a rotating part of the machine, the coil which wound in the core of that rotating part.
What is the purpose of an armature?
An armature is a component in an electric motor that interacts with the magnetic field to produce motion. It consists of windings where electrical current flows, creating a magnetic field that interacts with the field from the stator to generate torque and rotate the motor.
What is the main material in a motor armature?
Instead of a single piece of metal, the armature is made up of laminated thin metal plates. The thickness of the laminations is determined by the supply frequency. They are approximately 0.5mm thick. For the armature core, silicon steel laminates are used to reduce eddy currents and hysteresis losses.
What is an armature made of?
The armature is the part of an electric generator or motor that contains the main current-carrying winding. It usually consists of a coil of copper wire that is wound around an iron or steel core. The coil and core are placed in a magnetic field, which is produced by one or more permanent magnets or electromagnets.
What is the physical specifications of armature?
The physical specifications of an armature can vary widely depending on its application, but generally, it consists of a core made of laminated iron or steel to reduce eddy current losses. The armature typically includes windings of insulated copper or aluminum wire wound around the core. Dimensions such as diameter, length, and number of turns are tailored to optimize performance for specific motors or generators. Additionally, the armature may include features like commutators or slip rings, depending on the type of machine.
What is meant by core in electrical machine?
The armature center of a d.c. machine is typically made of overlaid sheets keeping in mind the end goal to, (a) lessen hysteresis misfortune , (b) diminish armature copper misfortunes.
Ac relay and DC relay?
what is the meaning of ac relay and dc relay EDIT: a DC relay is simply a coil and core that pulls on an armature. An AC relay usually needs a shaded-pole core (couple of copper loops) to prevent the armature from vibrating at 60 cycles or so. The core, also, is laminated steel like a transformer; so is the armature to help contain the magnetic field. You should not substitute a DC rated relay for an AC , but the reverse should be ok, if voltage and current ratings are the same.
What is armature or rotor?
An armature, often referred to as a rotor in the context of electric motors and generators, is the rotating component that generates electromagnetic force. In electric machines, the armature typically consists of coils of wire wound around a core, which produces electricity when it moves through a magnetic field. In motors, the armature receives electrical current, creating a magnetic field that interacts with the stator to produce motion. The design and function of the armature are crucial for the efficiency and performance of the machine.
Why armature core is laminated in dc machine?
to reduce the eddy current loss in the machine
