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What happens when field current of generator windings increases?
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What happens to the amount of current in a series circuit as the number of batteries increase?
it increases
What is a reverse KVAR relay?
The reverse KVAR relay protects a generator from a loss of excitation. When the excitation system is lost, reactive power will flow from the system back into the generator. When this happens, induced currents at twice the system frequency will flow in the rotor windings and rotor structure.
What happens to the current in a device if the resistance of the device increases and the voltage difference stays the same?
If resistance increases and voltage stays the same, then current decreases. Ohm's Law: Current equals Voltage divided by Resistance.
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.
Can a transformer be used to transform direct voltage and direct current?
For all intents and purposes, none. Transformers pass alternating current. Now, if you want to split hairs, when a direct current is initially connected to a transformer, magnetic field starts to build in the primary windings, and as this field builds, the lines of force cut through the secondary windings, MOMENTARILY producing an output voltage in the secondary windings. However, once the magnetic field is stable (within a millisecond or so) the output of the secondary windings fall back to zero. When you remove the direct current from the primary winding, the same thing happens again. As the magnetic field collapses, the magnetic lines of flux cut through the secondary, momentarily producing an output voltage. After the magnetic field collapes completely, the secondary output is zero. That is basically what you are doing with alternating current...inputting a positive voltage, then going to zero, then negative, then back to zero, building and collapsing magnetic fields so that it induces current to flow in the secondary windings.
What happens to the current as the resistance decreases?
it increases
What happens to the amount of current in a series circuit as the number of batteries increases?
it increases
What happens to a bulb if the current increases?
It gets brighter.
What happens to the magnetic field if the current in the wire increases?
If the current in the wire increases, the magnetic field also increases.
What happens to the current carrying ability of a wire when the temperature increases?
the current will increase
What happens if you increase the current in an electomagnet?
As current increases, the electromagnet strength will increase.
What happens to the current in a filament is replaced by a longer wire?
resistance increases
When a wire is smaller the resistance increases What happens to the electrical current?
increase
What happens if we replace the windings in a DC generator by light and detectors?
The windings of a DC generator are vital to producing electricity. The moving of a conducting wire, inside a magnetic field, induces a current in the wire. Replacing the wire windings, with anything else, would not work.To produce DC, the output of the windings must only be connected to the external circuit, when moving in a small part of an arc of a circle. This requires a switching method. This is usually performed by a segmented ring of contacts and brush gear, called a 'Commutator'.It may be possible to replace this crude, but effective, switch system with more modern contactless system. It would have to be proved reliable and no more expensive, than the tried and tested system.If you did this then you would have a generator that would not operate.
What happens when a part of a parallel circuit is disconnected?
current decreases and resistance increases
What happens to the amount of current in a series circuit as the number of batteries increase?
it increases
What happens if less current rating fuse is connected to function generator?
By reducing the output fusing of a generator, the total output of the generator will also be reduced. The capacity of the generator will remain the same but the fault trip point will be lowered.
