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What effects causes the difference in terminal voltage between the increasing and decreasing field excitation current?
sdrg
Why does the no-load characteristic differ for increasing and decreasing excitation current in dc generator?
cari diri r. aku pun selok ugop ni
If the excitation of generator changes what happens to the terminal voltage?
By Decreasing the excitation voltage the terminal voltage will decrease and similarly by increasing the excitation voltages the terminal voltage will also increases.
What effect does increasing the current have on solenoid?
it will produce a stronger magnetic field.
Excitation-transfer theory by zillmann?
Zillman's Excitation Transfer Effect http://doctordigger.blogspot.com/2005/07/zillmans-excitation-transfer-effect.html
What is the excitation system in a generator used for?
The excitation system is used to control the excitation of the rotating field in the armature. By increasing the armature current, it in turn increases the magnetic flux in the armature coil. This has the effect of increasing the voltage output of the generator. By lowering the armature current this in turn lowers the generator output voltage. The generator's voltage regulator automatically adjusts the output voltage continuously as the applied load on the generator changes.
Why does the no-load characteristic differ for increasing and decreasing excitation current?
No-load characteristic knows as magnetic characteristic or open circuit Characteristic (O.C.C). It shows the relation between the no-load generated e.m.f in armature, E and the field or exciting current Im at a given fixed speed. The excitation voltage is directly proportional with excitation current. When excitation voltages increase so do excitation currents also increase.
What effects causes the difference in terminal voltage between the increasing and decreasing field excitation current?
sdrg
How do you explain excitation?
by increasing the terminal voltage
In synchronous motor theory is excitation current the same as field current?
yes. excitation current is same as field current to my knowledge
Why does the no-load characteristic differ for increasing and decreasing excitation current in dc generator?
cari diri r. aku pun selok ugop ni
What is transformer turns ratio excitation current?
This is the current level needed to energize a transformer to its rated voltageThe clue is in the name! 'Excitation' means to create a magnetic field. So the excitation current is the current drawn from the supply which sets up the magnetic field around the core.
What components compose the excitation current of transformer how the are modeled in the transformer's equivalent circuit?
Excitation current Io = Iw + Iu
What is the difference between generator over excitation versus under excitation when attached to the grid?
Over Excitation is a condition when the Excitation System is providing too much field current and as a result, the rotor of the generator will over heat. The Excitation System is equipped with an Over Excitation Limiter. This limiter acts to reduce the Excitation Current if this condition exists Underexcitation is a condition when the generator is not getting enough Excitation Current. If the generator does not get enough Excitation Current, it can be un-synchronized with the grid. We call this slipping a pole. If this occurs, the generator can be severely damaged. Kelly Thompson Engineering Lead Siemens Energy Alpharetta GA
Why The Excitation current is non-sinusoidal when applied voltage is sinusoidal?
excitation voltage is sinusoidal because it is taken from the terminal of alternator but excitation current is non-sinusoidal because it always dc.
If the excitation of generator changes what happens to the terminal voltage?
By Decreasing the excitation voltage the terminal voltage will decrease and similarly by increasing the excitation voltages the terminal voltage will also increases.
What effect does increasing the current have on solenoid?
it will produce a stronger magnetic field.
