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A dc generator is a machine which works on the principle of electro magnetic induction $it converts the mechanical energy into electrical energy.
Wiki User
∙ 11y ago
Wiki User
∙ 9y agoThe working of a generator is similar to an engine. It converts the fuel into energy that can be used as electricity or heat.
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How many types of diesel generators?
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What is the International color code for DC wiring?
"What is the International color code for DC wiring?" "What is the International color code for DC wiring?" "What is the International color code for DC wiring?" "What is the International color code for DC wiring?"
What is the difference between an electric motor and an electric generator?
HOW ARE ELECTRIC GENERATORS DIFFERENT THAN MOTORS? There is no fundamental difference between an electric motor and an electric generator or dynamo. In normal use, all motors behave as generators, and all generators behave as motors. DC Motors act like generators because they use less electrical energy when allowed to spin fast. DC generators act like motors because they become easier to spin when less electrical energy is drawn from their terminals. For example, connect two small DC magnet motors together. Then if you spin the shaft of the first motor, the second motor's shaft will start spinning too. One acts as a DC generator, and the other acts as a DC motor. Or, spin the second one's shaft, and the first one will start spinning. Another example: If you connect a small DC motor to a small battery, then an electric current will appear in the motor's coils, and the motor starts spinning. But if you spin the motor's shaft slightly faster than the normal speed, the direction of current in the circuit will reverse, and the battery starts taking in energy from the motor. The motor has become a generator, and it's recharging the battery. Here's a good way to visualize what's happening. Imagine two pulleys connected by a rubber drive-belt. If you spin the first pulley, it pumps the belt into motion, and the second pulley starts spinning. Ask yourself this: which one is the generator? Answer: both and neither. A pulley is just a pulley. Of course we can *force* a pulley to behave like a motor: let the pulley rub against a moving belt, and the pulley will start spinning. Or we can turn it into a generator: turn the pulley, and the belt will be forced to move. In electric circuits the wires contain a circular "belt" made of electric charges (the electron-sea within the metal.) And as with the pulleys, the "belt" inside an electric circuit will slowly move along just like a leather belt. (You cannot see individual electrons, so when crowds of electrons start moving inside the wires, you cannot see any motion.) Or pretend that you have two water pumps which are connected together with hoses. Fill the pumps and the hoses with water. Now, when you turn the first pump, the pressure inside the "water circuit" drives the second pump into motion. This shows you that all pumps are motors, and all motors are pumps. It just depends on for which purpose they're employed. COILS AND MAGNETS Here's a simple electrical experiment which shows what's happening with motors and generators. Get two coils of wire wrapped on hollow plastic spools. Connect their wires together. Get two powerful bar-magnets and place the end of each magnet inside each spool. Now if you jerk one magnet suddenly, the other magnet will feel a kick. What happened? By suddenly yanking the first magnet, the first coil created a voltage because of "Lenz-Law Induction." This voltage caused all the charge in both coils to begin moving along. That created a magnetic field in the second coil, which gave the second magnet a kick. Motors and generators are based on this phenomenon. AC MOTORS AS GENERATORS But what about AC motors? And what about DC motors which use a "field coil" but no permanent magnets? If you spin either of these, a voltmeter will show no voltage. It's because you aren't using them correctly. To act as a generator, an AC motor needs to be connected to a power grid or to a large-value capacitor. And a DC field motor needs to be connected correctly (series-wound motors must be shorted, while parallel-wound motors must be left open.) And finally, these types of motors can only generate a voltage/current if they're spinning FAST. It takes awhile for tiny initial currents to build up. When no permanent magnets are present, and all you have are moving coils and pieces of metal, it takes current to make current. The current and voltage gradually build up because of a positive-feedback process, and this process doesn't kick in until the motor's shaft is turning faster than a certain speed. MODERN MOTORS DISCOVERED ACCIDENTALLY The modern DC motor was not designed as a motor. In the middle 1800s, inventor Zenobe Gramme was trying to build an electric generator which gave a very smooth output voltage. He did this by using many coils with overlapped fields. Because of it's smooth DC output, such a generator could replace large banks of batteries being used at the time. In 1873 one of his assistants accidentally connected two of his generators together. The first generator was being spun by a steam engine, and the second one unexpectedly started spinning like a motor. The "Gramme Machine" has been used ever since, under the name "DC motor" or "DC generator."
What is an example of a DC power source?
Anything that works on a Battery is a DC (Direct Current) like Cellphone, Flashlight, ipad, ipod and you laptop.
In DC motor is the armature plus brushes resistance substantially the same for every rotational position of the armature?
yes
Explain the construction and working of simple loop dc generator?
construction of DC generator
Explain the necessity and principles of commutator in Dc generator?
what is necessity of commutator in DC generator
With neat diagram Construction and working of variable-reluctance stepper motor?
Explain the construction details of DC Machine with neat diagram?
Explain how the induction motor gets loaded when the DC generator is loaded?
when the dc generator is loaded current will be drawn from it, therefore a back emf Will be generated, which opposes the motion of a generator, and hence, that opposition loads the three phase generator
Different types of DC generator?
There are two types me dc generator 1 separately excited dc generator 2 self excited dc generator
What are advantages of swinburne's test?
we can predetemine the efficiency of a dc machines working as a motor or generator
Which is usually produced by a generator ac or DC?
An ac generator produces ac, a dc generator produces dc, it all depends on the generator.
What was the first DC generator name and inventor why it is call generator?
first dc generator is max generator donno who invented t
How do you make DC generator?
A DC generator is a DC machine that is driven by an external rotating force. It is constructed the same as a DC motor.
Types of generators?
By the operation supply 1.AC generator 2.DC generator In DC generator we are having the following types according to the construction 1.DC Series Generator 2.DC shunt Generator 3.DC Compound Generator
How do you convert a DC generator to ac alternator?
Turn the DC generator inside out and you have an alternator .
Is dynamo an AC generator?
DC generator
