pratyavarti Dhara janitra ka Sachitra varnan Kare ward 12
Answers
Explanation:
ABOUT ALTERNATING CURRENT :
The alternating current having a great mystery during the time late 18th century .
When Two great scientist Nicola Tesla and Thomas Alva Edison fight due to current in business.
Thomas edison invented D.C source of current which use during that time but this current can,t be sent to long distance and direction if this current can,t be reverse these are problem with D.C source.
Nikola Tesla invented an induction motor , type of generator and transformer of A.C power transmission
Alternating current is an electric current in which magnitude of current and direction reverse periodically in compare to D.C source in which current flow in only one direction .
The Wave of A.c power circuit is sine wave because this leads to the efficient transmission of energy.
During that time alternating current is more efficient then Direct current because of its long transfer of current and in required magnitude of current.
HOW ALTERNATING CURRENT WORK :
A.C power is cheaper and easier to make electronic device
A.C can be used high voltage with smaller ( low ) current to reduce wastage of energy in current
A.C reduce the heating in the wire by high voltage in current.
NOTE :
A.C GENERATOR Work on the principle of electromagnetic induction
PRINCIPLE :
In generator , a coil rotate in a magnetic filed . Due to rotation , the magnetic flux linked with the coil change and therefore an emf is induced between the end of coil.
Thus a generator acts as a source of current in external circuit containing load when it is joined between the end of its coil.
Thank you
Explanation:
An Alternating current generator is a device which convert the mechanical energy to electrical energy .
It work on the principle of electromagnetic induction .
The magnitude of induced emf maximum when the magnetic flux linked with the coil reduce zero from its maximum value this happened when the plane of coil lie in the direction of magnetic field.
The induce emf become zero when the magnetic flux linked with the coil is maximum this happened when the plane of coil is normal to the magnetic field.
The alternating current has the frequency equal to the frequency of rotation of coil.
The magnitude and direction of current reverse periodically while flowing in circuit.