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Explain why the output voltage of an over-compound generator increases as the load increases?
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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.
Does the voltage output increase when a generator is made to spin faster?
You would have to apply a higher voltage from outside - for example, in the case of DC, connect a battery that provides more voltage, or connect more than one battery in series; or in the case of AC, use a transformer to increase the voltage.
What is the off load voltage of the generator?
Terminal voltage is the voltage between the output terminals of a generator.
What is a transformer that increases voltage?
A transformer that increases voltage is a step-up transformer.
How do you step down frequency and voltage from an AC generator?
You step down voltage from an AC generator with a transformer.You step down frequency from an AC generator with a motor/generator set, or with an inverter. This is not a common thing to do.
How is the induced voltage of separately excited dc generator affected if the speed increases?
as speed increases, induced voltage increases
How does the load affect voltage output of a series generator?
In a series generator, as load is added, output voltage increases.
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.
How current increases when the load increases in a generator?
Power is voltage times current. If you want to maintain constant voltage and yet increase power, then current must increase. Its simple math.
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 should a prime mover's speed be kept constant?
As you asked the question and it was added it to the electrical category I am presuming that you are talking about electrical generation. The prime mover has to be kept at a constant speed. The speed of the prime mover governs the frequency of the voltage generated. As the load increases the engine will start to slow down. The engine's speed governor senses this drop in RPM, hence the drop in frequency, and increases the fuel supply to the engine by advancing the diesel engine's fuel rack. This action increases the engine speed and brings the generated frequency back to the required system frequency.Also as the load increases, the output voltage will start to decrease. The output voltage is controlled by the generator's voltage regulator. When the decrease in voltage is sensed by the voltage regulator, it increases the generator's field excitation voltage which will bring the voltage back to the required system voltage.These actions are going on continuously, balancing each other all the time the engine is running and the generator is producing an output voltage.
Does the voltage output increase when a generator is made to spin faster?
You would have to apply a higher voltage from outside - for example, in the case of DC, connect a battery that provides more voltage, or connect more than one battery in series; or in the case of AC, use a transformer to increase the voltage.
What is the off load voltage of the generator?
Terminal voltage is the voltage between the output terminals of a generator.
Generator excitation voltage?
the voltage which is given for creating magnetic field in a generator is known as excitation voltage.
Why terminal voltage of a self excited shunt generator decreases with an increase of load?
When the generator is loaded, flux per pole is reduced due to armature reaction.
What determines the voltage in a generator?
in generator the flux will determines the voltage. the flux will improve by auto voltage controller or any other equipment.
What can't we use step-up transformer to increase the voltage by producing electricity of lower voltage?
This question is not understandable. You can use a step up transformer to increase voltage; you can't increase voltage by producing electricity at a lower voltage; this will result in current flow into your generator, not current flow out (similar to operating a generator in the leading mode). Please explain further under "discuss question".
