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Why does the magnetizing curve of shunt generator tend to become horizontal after a certain value of field current?
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Magnetising characteristics of DC shunt generator?
the magnetizing curve is the relation b/w air gap flux and the field winding current armature EMF. the resulting curve is called magnetizing characteristics or open circuit characteristics. at any speed by recognizing that the induced emf is directly proportional to the speed
What is the difference between the inrush current and the fault current?
Magnetizing inrush current has bigger 2nd harmonics compare to short circuit current. the second harmonics content is about >60% of fundamental harmonic. magnetizing inrush current happened when we energised the transformer, and short circuit current happened if there is a short circuit between different alive phase.
What is an ac and DC generator?
An a.c. generator produces alternating current, whereas a d.c. generator produces direct current.
What is meant by maganetization current?
It is the one which is used to produce flux in transformer and main field flux in motor or generator. Flux is proportional to the current passed through the coil. Flux is inversely proportional to the reluctance of the medium that the flux passes through. Flux is analogous to current. Reluctance is analogous to resistance. MMF is analogous to voltage. so if there is a coil carrying 5A current and 10 turns it produces 5*10 = 50 Ampere Turns MMF . so as the current increases MMF increases. If reluctance of the medium used is high there will be more flux. Let us take a transformer in that in order to produce EMF in the secondary we have to give flux from the primary for that we need a current in the primary that is called Magnetizing current . Any way if we load the transformer , the transformer primary carries (N2 / N1 ) * I2 current in addition to magnetizing current. Apart from these two currents there will be another current which is responsible for core loss in the transformer. Please note that all these three currents are at different phase angles i.e. they are not in same phase. Medium for the flux in the transformer is core. If it is a iron core reluctance is more , to produce same EMF it will take more magnetizing current. If we use CRGO steel as core reluctance is less. For less magnetizing current itself we get flux for the required EMF in secondary.
What is meant by Generator P.f?
the cosine of the angle between voltage and current of generator is called power factor (pf) of generator.
What is mean by magnetizing current of transformer?
A: As current flow in the primary it will magnetize the core of the iron in the transformer that is called magnetizing.
Magnetising characteristics of DC shunt generator?
the magnetizing curve is the relation b/w air gap flux and the field winding current armature EMF. the resulting curve is called magnetizing characteristics or open circuit characteristics. at any speed by recognizing that the induced emf is directly proportional to the speed
What is the procedure to measure the magnetizing current in transformer?
i also do know the answer
What is the difference between the inrush current and the fault current?
Magnetizing inrush current has bigger 2nd harmonics compare to short circuit current. the second harmonics content is about >60% of fundamental harmonic. magnetizing inrush current happened when we energised the transformer, and short circuit current happened if there is a short circuit between different alive phase.
WHAT IS THE The phenomenon in which magnetism lags behind the magnetizing current?
This phenomenon is referred to as the hysteresisof the material.
How it is getting current from generator?
To draw current from a generator, you need to connect a load to it.
Does 1996 Dodge Ram have generator or alternator?
It is technically an alternating current generator.It is technically an alternating current generator.
What is an ac and DC generator?
An a.c. generator produces alternating current, whereas a d.c. generator produces direct current.
What is meant by maganetization current?
It is the one which is used to produce flux in transformer and main field flux in motor or generator. Flux is proportional to the current passed through the coil. Flux is inversely proportional to the reluctance of the medium that the flux passes through. Flux is analogous to current. Reluctance is analogous to resistance. MMF is analogous to voltage. so if there is a coil carrying 5A current and 10 turns it produces 5*10 = 50 Ampere Turns MMF . so as the current increases MMF increases. If reluctance of the medium used is high there will be more flux. Let us take a transformer in that in order to produce EMF in the secondary we have to give flux from the primary for that we need a current in the primary that is called Magnetizing current . Any way if we load the transformer , the transformer primary carries (N2 / N1 ) * I2 current in addition to magnetizing current. Apart from these two currents there will be another current which is responsible for core loss in the transformer. Please note that all these three currents are at different phase angles i.e. they are not in same phase. Medium for the flux in the transformer is core. If it is a iron core reluctance is more , to produce same EMF it will take more magnetizing current. If we use CRGO steel as core reluctance is less. For less magnetizing current itself we get flux for the required EMF in secondary.
Does a generator produce direct current or alternating current?
A generator produces an alternating current, still it gives d.c. output because we use slip-rings at the terminals of actual output of generator.
What does an electromagnet do in a generator?
in a generator electromagnets are used for producing flux for rotor to cut so it can produce current in small generator they will have residual magnetism and in big generator current is supplied to electromagnet from another small dc generator
What is a magnet pole in a simple generator?
Induce current in the generator windings.
