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The part that rotates inside of an electric motor is called the rotor.
Hulda Gleason
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What does a commutater in an electric motor do?
It (1) provides a means of connecting a rotating coil to the external circuit, and (2) it is a rotating switch which ensures that the direction of the current through the coil always acts in the same direction relative to the magnetic field in order to ensure its torque acts in the same direction.
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 device works by rotating a wire coil within a magnetic field to produce electric current?
inductor
How are coil in a motor and the coil in an electromagnet the same?
All (electrical) coils are the same, in that they are coils. All coils honor the same principles: investing electrical energy into a coil results in a magnetic field. Investing magnetic energy into a coil results in an electric current. But, different coils serve different purposes. For example, a coil in an electromagnet is used to magnify the magnetic field surrounding a wire that carries an electric current. This is typically aided by supplying a core made from a a ferromagnetic material; that is, a material which offers very little resistance to magnetism. In an electromagnet, the coil and its core is typically stationary (even though the entire contraption might move, as is the case with a crane at the scrapyard). Therefore, the coil in an electromagnet converts electrical energy into magnetic energy. The reversal of this process converts magnetic energy into electric energy, through a process known as induction. This is the case in dynamos, electric generators, and also in some electric motors. Some machines make use only of the conversion from electric to magnetic energy, as is the case with the electro magnet. This group includes some forms of electric motors and generators. Some machines make use only of the conversion from magnetic to electric energy, as is the case in the coil used to provide the ignition spark used with combustion engines. Some machines make use of both effects. This includes transformers, and many forms of electric generators and motors. For example, a stationary coil in an electric motor might supply a magnetic field which acts on the rotor. If the field in the stationary magnet itself rotates, as is for example the case with 3-phase electric power systems, this rotating magnetic field induces an electric current in the rotor. The rotor could itself be a coil, which in response to this induced current creates a magnetic field, pulled around by the rotating field of the stationary part. (This is in fact the principle behind the most common electrical motor, the short-circuit motor) Further uses of coils include that of (transient) energy storage: an electric current can build a magnetic field. When the current changes, the magnetic field also changes, and thus induces an electric current. This form of coils is frequently used in electronics to create filters; devices that suppress or select electric current according to its frequency. For example, your HiFi's loudspeakers contain a filter device that divides the electric signal from your amplifier into the higher frequency portions fit for your tweeter, and the lower frequency portions fit for your bass speaker.
What is the difference between a galvanometer and an electric motor?
Well, both work on what is termed the 'motor principle', i.e. a current-carrying conductor, when placed in a magnetic field, is subject to a force perpendicular to that field. But that's where the similarity ends, for the operating coil in a galvanometer is restricted to move within an arc, whereas a motor's coil will continuously rotate.
Correct definition of the term armature?
The rotating coil of a dynamo or electric motor is called armature.
What is it called when a mechanical energy to electrical energy by rotating a coil of wire through a magnetic field?
An electric motor
The rotating electromagnet coil assembly in a dc motor is called what?
it is called an armature
What is back motor effect in generator?
When current is induced in the rotating coil in an electric generator then a counter couple acts on the current carrying rotating coil in the magnetic field(in accordance to the principle of dc motor). This counter couple is called back motor effect.
What does a commutater in an electric motor do?
It (1) provides a means of connecting a rotating coil to the external circuit, and (2) it is a rotating switch which ensures that the direction of the current through the coil always acts in the same direction relative to the magnetic field in order to ensure its torque acts in the same direction.
Which device works by rotating a coil within a magnetic field to produce an electric current?
generator
Which device works by rotating a wired coil within a magnetic field to produce electric?
generator
Why does the coil have to be balanced on an electric motor?
It will be spinning at high revolutions.
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.
How electric motors convert electrical energy to mechanical energy?
it is done with a magnet and a rotating coil of wire
What device works by rotating a wire coil within a magnetic field to produce electric current?
inductor
What device works rotating a wire coil within a magnetic field to produce electric current?
inductor
