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How residual magnetism present inside the self excited generator?
Residual magnetism in a self-excited generator refers to the small amount of magnetism that remains in the magnetic core after the generator has been de-energized. This residual magnetism is crucial for the initial excitation of the generator because it provides the necessary magnetic field to induce voltage when the generator is started. As the rotor turns, the residual magnetism induces a small voltage in the stator windings, which, when connected to the field windings, enhances the magnetic field and leads to self-excitation, allowing the generator to generate power. Without sufficient residual magnetism, the generator may fail to start or produce voltage.
Can a shunt motor be started without residual magnetism?
Yes. The field is provided by the shunt windings, which are connected in parallel with the supply. You may be confusing a motor with a generator, as you cannot start a shunt generatorwithout residual magnetism.
What are the condition of building up a self excited shunt generator?
self excited generator must be started without any external load attached ,an external load will continuously drain off the build up voltage and prevent the generator from reaching its proper operating voltage. also the presence of residual magnetism plays an important role And the field current resistance should be less than critic field circuit resistance
Why small voltage is built up immediately in rotating shunt machine even without field excitation?
In a rotating shunt machine, a small voltage can be generated even without field excitation due to residual magnetism in the rotor. This residual magnetism creates a weak magnetic field, which induces a small voltage in the armature windings as the rotor spins. Additionally, the armature reaction can enhance this effect slightly, allowing for voltage to build up immediately upon rotation. The small voltage may not be sufficient for practical use but demonstrates the machine's inherent capacity to generate some electrical output.
Is residual flux necessary in separately excited generators?
Residual flux is not strictly necessary for separately excited generators to operate, but it is often beneficial. It provides an initial magnetic field that helps establish the output voltage when the generator is started. Without residual flux, the generator may require additional time or an external source to build up the magnetic field and achieve stable operation. Overall, while not essential, residual flux aids in the generator's performance and efficiency during startup.
How residual magnetism present inside the self excited generator?
Residual magnetism in a self-excited generator refers to the small amount of magnetism that remains in the magnetic core after the generator has been de-energized. This residual magnetism is crucial for the initial excitation of the generator because it provides the necessary magnetic field to induce voltage when the generator is started. As the rotor turns, the residual magnetism induces a small voltage in the stator windings, which, when connected to the field windings, enhances the magnetic field and leads to self-excitation, allowing the generator to generate power. Without sufficient residual magnetism, the generator may fail to start or produce voltage.
Can a shunt motor be started without residual magnetism?
Yes. The field is provided by the shunt windings, which are connected in parallel with the supply. You may be confusing a motor with a generator, as you cannot start a shunt generatorwithout residual magnetism.
What are the condition of building up a self excited shunt generator?
self excited generator must be started without any external load attached ,an external load will continuously drain off the build up voltage and prevent the generator from reaching its proper operating voltage. also the presence of residual magnetism plays an important role And the field current resistance should be less than critic field circuit resistance
Why small voltage is built up immediately in rotating shunt machine even without field excitation?
In a rotating shunt machine, a small voltage can be generated even without field excitation due to residual magnetism in the rotor. This residual magnetism creates a weak magnetic field, which induces a small voltage in the armature windings as the rotor spins. Additionally, the armature reaction can enhance this effect slightly, allowing for voltage to build up immediately upon rotation. The small voltage may not be sufficient for practical use but demonstrates the machine's inherent capacity to generate some electrical output.
Is residual flux necessary in separately excited generators?
Residual flux is not strictly necessary for separately excited generators to operate, but it is often beneficial. It provides an initial magnetic field that helps establish the output voltage when the generator is started. Without residual flux, the generator may require additional time or an external source to build up the magnetic field and achieve stable operation. Overall, while not essential, residual flux aids in the generator's performance and efficiency during startup.
Is it possible to run a generator without voltage?
a big no
What is meant by excitation of a generation?
In a generator there should be residual magnetism to start the voltage production . However maintaining the voltage level is a little more complicated because of drift when loads are applied to the unit. to overcome some of the problems an exciter coil section produces a voltage at a know level. that level used as a reference to increase or lower the output of the main generator. Onan YD units have an output of approximately 24volts if the voltage lags the current by 10% it raises the exciter voltage to offset the lagging voltage. Most generators has an AVR (automatic voltage regulator) that will more closely hold frequency (a function of rpm) voltage and current at an even load. without some excitation the generation process would wonder up and down seeking a midpoint but fluctuating wildly with every output request.
What is powerformer?
voltage transfer without using step up t/f &conventional generator
How do you Jump a car with only a gas powered generator?
Its impossible to do so without damage if not using some sort of voltage regulator. generator is 120v, cars run on 12v.
What is the name of device which can produce direct voltage without rectification?
photo voltaic cell ************************ A dynamo is a generator which produces d.c.
How to calculate amp load for a generator?
To calculate the amp load for a generator, you need to determine the total wattage of the devices you plan to power with the generator. Then, divide the total wattage by the voltage of the generator (usually 120V or 240V for residential generators) to get the amp load. This will help you ensure that the generator can safely handle the electrical load without being overloaded.
Why does my Car stall when you unhook the battery?
It means that you have an alternator fitted. An alternator needs an amount of battery voltage to generate electricity. A generator/dynamo will make voltage without a battery being present.
