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Why transformer is connected to ac?
Because of how a transformer works. Basically a transformer have a primary and a secondary winding sitting close to each other, with the primary connected to the ac source. Pushing ac through the primary wionding creates a pulsating magnetic field. Pushing a pulsating magnetic field through the secondary winding creates an electric current in it. That current will also be ac, but dependent on the number of turns in the windings it will have another voltage. DC don't give a pulsating magnetic field from the primary winding, and a stationary magnetic field won't generate any electricity in the secondary winding.
Why use capictor in motor?
To create rotating magnetic field inside motor stator and it is done by capacitor. current drawn by motor running winding is lagging in nature when capacitor is connected in series with starting winding then the phase angle of running winding current and starting winding currents changes which creates a rotating magnetic field and motor is able to run.
What is the role of series combination of starting winding and running winding in an electric fan?
In a motor such electric fan it needs magnetic field to operate if a coil is being energized it creates magnetism. How many speed does your electric fan has? usually it has 3 speeds so it need 3 windings and 1 for the magnetic field therefore there are 4 windings the Running winding, Starting winding, Auxiliaries.
How does a transformer uses induction to transform current?
at first it comes from the source then go to the winding of coil and inside the coil voltage was reduce by magnetism and with this current still flow due to magnetic flux and then come out ti the second winding
How demagnetize an electric motor?
A transformer winding only produces a magnetic field when current flows through it. Switch the current off, and the magnetic field disappears. You do not need to 'demagnetise' a transformer winding.
What is the function of field winding in DC generator?
The motor needs the current and magnetic flux to create motion The magnetic field is created by field winding where as armature carries the current resulting into the rotation of armature
What is magnetic order?
Selenium is diamagnetic; it only creates a magnetic field in opposition to an external magnetic field.
What spinning particle creates a magnetic field?
An electron is a spinning particle that creates a magnetic field. The spinning motion of the electron generates a magnetic dipole moment, resulting in the creation of a magnetic field around the electron.
What is rotor in ac alternator?
A Rotor is a mechanism in the alternator that is driven by the pulley belt from the engine.which creates a magnetic field which causes voltage.Answer.The rotor does not 'create' a magnetic field. The emf induced in the stator winding is due to the residual magnetic flux of the rotor which cuts the stator windings as the rotor rotates.
What is selenium's magnetic ordering?
Selenium is diamagnetic; it only creates a magnetic field in opposition to an external magnetic field.
What are the parts of simple loop generator?
yoke,magnetic poles,armature,field winding,shaft,armature winding,commutator
When does an electromagnet produce a field?
An electromagnet produces a magnetic field when current is passed through it wire winding.
