Armature Meaning

September 18, 2024 Post a Comment

Armature meaning

: an organ or structure (such as teeth or thorns) for offense or defense. : a piece of soft iron or steel that connects the poles of a magnet or of adjacent magnets.

What is another name of armature?

structure	framework
frame	shell
fabric	skeleton
edifice	configuration
infrastructure	framing

What is armature in motor?

An armature is a device through which electric current is passed for generating torque (rotor). The current that passes through the rotor is sometimes called the armature current. The word "armature" refers to a device through which electric current is passed for generating torque.

What is armature in DC generator?

A DC motor has coils of wire mounted in slots on a cylinder of ferromagnetic material, which is termed the armature. The armature is mounted on bearings and is free to rotate. It is mounted in the magnetic field produced by permanent magnets or current passing through coils of wire, which are called the field coils.

What is difference between armature and rotor?

So basically, the rotor consists of a field magnet which rotates while the rotor remains stationary and on the other hand the armature carries current and is stationary and part of the stator.

What is armature voltage?

The armature voltage formula is. V = k η ϕ Where k is constant based on armature design, is armature speed in rpm and is flux generated by the magnetic field. However in physical motors, the resistance is distributed from one end of the winding to the other. Armature voltage is the same as terminal voltage.

What is the advantage of armature?

1) The current is drawn directly from fixed terminals on the stator without the use of brush contacts. 2) The insulation of stationary armature winding is easier. 3) The number of sliding contacts (slip rings) is reduced. Moreover, the sliding contacts are used for low-voltage DC Source.

What is a motor commutator?

What is a Commutator? Commutators are used in DC machines (DC motors and DC generators) universal motors. In a motor, a commutator applies an electric current to the windings. A steady rotating torque is produced by reversing the current direction in the rotating windings each half turn.

What is another word for assemblage?

crowd	gathering
assembly	group
congregation	company
flock	mass
multitude	meeting

What is armature and its function?

Functions: Armature: A long rectangular coil with multiple copper wires wound around an iron core is an armature. This armature winding is placed in a magnetic field and electricity is passed through it.

What are the 4 parts of an armature?

An armature is made up of a number of main components; the core, the commutator, the winding and the shaft.

What is armature core in DC motor?

Armature core is the rotor of a dc machine. It is cylindrical in shape with slots to carry armature winding. The armature is built up of thin laminated circular steel disks for reducing eddy current losses.

What is use of armature in dc machine?

The armature's role is twofold. The first is to carry current across the field, thus creating shaft torque in a rotating machine or force in a linear machine. The second role is to generate an electromotive force (EMF).

What is the difference between armature and commutator?

Armature	Commutator
It provides current to commutator from the core of the armature	It changes AC to DC & vice-versa
It is a set of coils arranged in the core	It is a set of segments

What is a starter armature?

The armature is an electromagnet, mounted on the drive shaft and bearings for support. It is a laminated soft iron core which is wrapped with numerous conductors, loops or windings.

Why armature is stationary in alternator?

The armature windings of the rotating field alternator, being stationary, are not subjected to vibration and centrifugal forces. A stationary armature can be easily insulated for the high voltage for which the alternator is designed.

Is rotor same as motor?

The rotating part of the motor is known as the rotor. The rotor core and the rotor winding are the part of the rotor. The winding of the rotor is excited by the DC supply. The squirrel cage and the phase wound are the types of the rotor.

What is the difference between AC and DC winding?

In AC motors, the armature is stationary while the magnetic field rotates. In DC motors, the armature rotates while the magnetic field remains stationary. In AC motors, three input terminals (RYB) are present. In DC motors, two input terminals (positive and negative) are present.

What is armature speed?

Armature speed is approximately proportional to the voltage across the armature. Ward-Leonard System: This Ward –leonard system is used where very sensitive speed control of the motor is required (e.g electric excavators, elevators, etc.). The arrangement of this system is as required in the figure shown below.

What is flux in DC motor?

D.C. motors 3.15A) means that the field flux is directly proportional to the armature current, and the torque is therefore proportional to the square of the current. Reversing the direction of the applied voltage (and hence current) therefore leaves the direction of torque unchanged.