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No, these can be switched depending on the requirements of the application. It is more practical to have the armature windings (since they will carry the full load current) as the stator for this will require larger wires and is also easier to cool if kept stationary. The field windings do not carry the full load current of the load so this requires smaller wires and smaller slip rings since this is the piece that will rotate.
What else can I help you with?
Why armature winding resistance is less than field winding resistance?
An 'armature winding' is the rotor winding, and the 'field winding' is the stator winding.
What are field windings and armature windings in a dc motor and generator?
generators have two types of winding , * at armature also called armature winding( winding around shaft , we can say), which is the moving part. note that armature also consists of magnets along with windings. hence produces field arount it. * and at stator also called field winding, because when armature rotates its flux(field) is cutted by the stator windings and produces mutually induced e.m.f in it( in stator windings off course) causing current to flow. this current also produces some electric field around it which is in return cutted by the armature windings hince a little amount of e.m.f ( also called back e.m.f) produced in armature due to stator winding current. know this current in armature (due to back e.m.f produced by stator winding) produces additional field , hence causing more current in stator winding. this is the reason that why stator windings are called field winding( as they cause electric field of armature stronger and cause more current in output). note that out put is taken from the stator windings in generators.
Is the rotor turning with or against the rotating stator field when we interchange the DC armature connection in order to reverse the motor direction and why?
When we interchange the DC armature connection to reverse the motor direction, the rotor turns against the rotating stator field. This is because reversing the armature connection effectively changes the direction of the magnetic field produced by the rotor. As a result, the rotor's magnetic field opposes the stator's rotating magnetic field, causing the rotor to turn in the opposite direction.
Where the armature winding coil placed?
The armature winding coil is typically placed on the rotor of an electrical machine, such as a motor or generator. In a rotating machine, the armature winding is situated on the core, which is often made of laminated iron to reduce eddy current losses. In some designs, such as in certain types of generators, the armature can also be located on the stator. The placement of the armature winding is crucial for the efficient generation of magnetic fields and the conversion of electrical energy.
How many types of winding are used in AC and DC motors?
IN DC MOTORThere are 2 types of windings:1. Field windingOn poles core which are on stator body.These are always concentrated type.2. Armature windingOn rotor on motor may be simplex or multiplex and lap or wave connected.IN AC (Synchronous ) MOTOR3-phase star or delta connected on stator (armature ) suppliedby 3 phase may be concentrated or distributed (usually preferred) .Rotor (field ) has concentrared in salient pole type nd distributed in cylindrical type supplied by DC supply.IN AC ( Induction ) MOTOR3-phase (star or delta connected) distributed winding on stator and wound rotor .In squirrel cage rotor short circuted copper bars are used.
Why armature winding resistance is less than field winding resistance?
An 'armature winding' is the rotor winding, and the 'field winding' is the stator winding.
What are field windings and armature windings in a dc motor and generator?
generators have two types of winding , * at armature also called armature winding( winding around shaft , we can say), which is the moving part. note that armature also consists of magnets along with windings. hence produces field arount it. * and at stator also called field winding, because when armature rotates its flux(field) is cutted by the stator windings and produces mutually induced e.m.f in it( in stator windings off course) causing current to flow. this current also produces some electric field around it which is in return cutted by the armature windings hince a little amount of e.m.f ( also called back e.m.f) produced in armature due to stator winding current. know this current in armature (due to back e.m.f produced by stator winding) produces additional field , hence causing more current in stator winding. this is the reason that why stator windings are called field winding( as they cause electric field of armature stronger and cause more current in output). note that out put is taken from the stator windings in generators.
What is the difference between a field winding and an armature winding in any machine?
In electrical machines such as motors and generators, the field winding is responsible for producing a magnetic field within the machine. This magnetic field interacts with the armature winding, which carries the electric current and generates mechanical power. The field winding typically has fewer turns of thicker wire compared to the armature winding, which has more turns of thinner wire to handle higher currents.
What type of current flows in stator and rotor winding of a dc shunt generator?
The field winding in the stator is exposed to the full current generated by the rotor's winding.
What is armature torque?
Armature torque refers to the torque produced by the electromagnetic interaction within the armature of an electric motor or generator. It is generated when current flows through the armature winding, creating a magnetic field that interacts with the magnetic field from the stator. This interaction results in a rotational force, or torque, that drives the rotor. The magnitude of armature torque depends on factors such as the current, the strength of the magnetic field, and the configuration of the winding.
Is the rotor turning with or against the rotating stator field when we interchange the DC armature connection in order to reverse the motor direction and why?
When we interchange the DC armature connection to reverse the motor direction, the rotor turns against the rotating stator field. This is because reversing the armature connection effectively changes the direction of the magnetic field produced by the rotor. As a result, the rotor's magnetic field opposes the stator's rotating magnetic field, causing the rotor to turn in the opposite direction.
Does armature rotates?
Typically the armature windings are in the stator of a generator, which does not rotate. Typically the field windings are on the rotor, which rotates.
What is inductor alternator?
The armature and the field windings of an inductor alternator are both accommodated in the stator. The three phase ac armature windings are distributed in small slots and the dc field windings are concentrated in two slots in the stator. Each field coil spans half the total number of stator slots. Armature coils are connected in star and field coils are connected in series. The rotor resembles a cogged wheel, with no winding. The core of the stator, which is completely embraced by the field coils, will retain a residual magnetism if excited once. When the rotor is rotated, the passage of the rotor teeth alternatively under the field offers a varying reluctance path for the flux produced by the field coils. This flux, which varies periodically, links with the armature coils and induces an emf in them. The frequency of the induced emf depends on the speed of the rotor. The magnitude depends on the speed of the rotor as well as on the level of excitation. The armature and the field windings of an inductor alternator are both accommodated in the stator. The three phase ac armature windings are distributed in small slots and the dc field windings are concentrated in two slots in the stator. Each field coil spans half the total number of stator slots. Armature coils are connected in star and field coils are connected in series. The rotor resembles a cogged wheel, with no winding. The core of the stator, which is completely embraced by the field coils, will retain a residual magnetism if excited once. When the rotor is rotated, the passage of the rotor teeth alternatively under the field offers a varying reluctance path for the flux produced by the field coils. This flux, which varies periodically, links with the armature coils and induces an emf in them. The frequency of the induced emf depends on the speed of the rotor. The magnitude depends on the speed of the rotor as well as on the level of excitation.
Answering Which one is a separately excited generator - ac generator or dc generator?
Excitation is the phenomenon by which you control the excitation of field winding of a generator. In DC generator field winding is placed on stator and this field winding can be self excited or seperately excited depending upon the type on generator used. AC generators can also be self excited or seperately excited type but field winding is placed on rotor nad armature winding on stator.
What do you understand about the stator of an AC motor?
AC motor has two main winding components - stator and a rotor. Stator winding is stationary where as rotor winding is on rotating part.
What is armature reaction in dc motor?
Armature reaction is effect of armature flux on main field flux. Basically there are two windings in a dc motor - Armature winding (on stator) and field winding (on rotor). When we excite the field winding, it produces a flux which links with the armature. This causes an emf and hence a current in the armature. This current in armature produces another flux which lags the main flux. This is referred to as armature reaction. It has two effects on the machine: 1. Demagnetising effect: It reduces the strength of the main flux. 2. Crossmagnetising effect: Its effect is that it bends/distortes the the main flux line along the conductor
Where the armature winding coil placed?
The armature winding coil is typically placed on the rotor of an electrical machine, such as a motor or generator. In a rotating machine, the armature winding is situated on the core, which is often made of laminated iron to reduce eddy current losses. In some designs, such as in certain types of generators, the armature can also be located on the stator. The placement of the armature winding is crucial for the efficient generation of magnetic fields and the conversion of electrical energy.
