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What is the function of field winding in DC generator?
The motor needs the current and magnetic flux to create motion The magnetic field is created by field winding where as armature carries the current resulting into the rotation of armature
The magnitude of the voltage induced in a conductor moving through a stationary magnetic field depends on the what?
The magnitude of the voltage induced in a conductor moving through a stationary magnetic field depends on the length and the speed of the conductor.
Relation between voltage speed and current in alternating current motor?
voltage is inversly proportional to speed speed and current are directly proportional to each other but voltage and current are directly proportional to each other..
How fan regulator works?
A fan regulator is a crucial component that serves to increase or decrease the speed of your fan according to your needs. To understand how a regulator works, you must know something about resistances. Any electrical conductor allows current to pass through it. The conductor however, offers a certain amount of resistance to the passage of current. The resistance depends upon the material of the conductor. The regulator has spools of wire with different amounts of resistances. When you set the knob at a particular position, you include a certain resistance in series with the fan. A series connection implies the resistance is in line with the fan. This reduces the voltage drop across the fan and its speed to your desired level. The greater the resistance, higher is the voltage drop across it and that lowers the speed of the fan.
Why is motor current draw lower at full speed?
Because full speed is unloaded. As you load the motor, speed decreases, and slip increases, with an accompanying increase in current.
Why it is not possible to measure the drift speed for electron by timing their travel along the conductor?
It's difficult to accurately measure drift speed by timing electrons because individual electrons move randomly at high speeds, making it hard to track their motion. Also, electrons in a conductor have different velocities and directions, making it challenging to calculate an average drift speed. The collective drift speed of electrons in a current can be measured indirectly by observing the overall current flow in the conductor.
How do you calculate set and drift?
Set and drift are typically calculated in the context of navigation and maritime operations. Set refers to the direction of the current's flow, while drift quantifies the distance moved by a vessel due to that current over a specific time. To calculate them, you can use vector analysis: determine the vessel's course and speed, then measure the current's speed and direction. By combining these vectors, you can find the resultant path of the vessel, which gives you the set and drift values.
How does electricity flows through a conductor?
Electric current - a movement or flow of electrically charged particles, typically measured in amperes.In a conductor, current flow is via a drift of free electrons in the metal. the actual drift rate may be slow, the electric field that drives them itself propagates at close to the speed of light, enabling electrical signals to pass rapidly along wires.See related link belowElectricity can flow through a conductor because it allows the electrons to move freely through the object. With an insulator, electrons cannot move.
Is an electric current a movement of electrons at near the speed of light?
No, electric current is the flow of electrons through a conductor, but the individual electrons do not move at near the speed of light. Instead, the speed of electron movement in a conductor is typically much slower.
Do electrons in a DC circuit travel at the speed of light?
The electrons themselves do not move at the speed of light. Electrons in a DC circuit move because of the application of an electric field. Like molecules in a gas, the charge carriers, electrons, undergo a Brownian-like motion through the conductor. The average drift velocity can be calculated by I=nAvQ, where I is current, n is the number of charged particles, A is the cross section area of the conductor, v is drift velocity, and Q is the charge on each particle.
How does electricity flow through conductors?
Electric current - a movement or flow of electrically charged particles, typically measured in amperes.In a conductor, current flow is via a drift of free electrons in the metal. the actual drift rate may be slow, the electric field that drives them itself propagates at close to the speed of light, enabling electrical signals to pass rapidly along wires.See related link belowElectricity can flow through a conductor because it allows the electrons to move freely through the object. With an insulator, electrons cannot move.
Does the current and light travels at same speed?
Actually it is an interesting fact to be known thoroughly Current through metal is due to the drift flow of electrons. Actually that drift velocity is just 0.1 mm /s Very very slow. But how does the bulb glow so immediately as switch on the circuit? Here though electrons get drifted at such a low speed, that disturbance alone has been passed on from one region to the other at high speed. Hence we sense as if the current has passed at the speed of light. But acutally we cannot say that current flows at such a high speed.
How does electrical current flow?
In a conducting wire, an electrical current will flow at about 2/3 the speed of light in a vacuum, or 200,000 km/sec. Note that the speed of the individual electrons is quite a bit less, and the average speed of the electrons is less than a millimeter per second. It is the CURRENT that advances at 2/3 the speed of light, not the electrons.AnswerThe free electrons in a metal conductor move in random directions at a very high speed -a little less than the speed of light. This is the case whether or not a potential difference (or an electric field) is applied across the ends of that conductor.However, when a potential difference is applied, these randomly-moving electrons are slightly biased towards the positive end of the conductor. So if a randomly moving but unbiased electron would normally end up at, say, point A, within the conductor then, under an electric field, it would end up at point B instead -where point B is typically less than the diameter of an atom away from point A. So individual electrons move along a conductor at speeds in the order of millimetres per hour.As current is defined as a drift of electric charge (free electrons, in the case of metal conductors), this means that the velocity of this drift and, therefore, an electric current is very, v-e-r-y, slow! However, the effect of that current is felt immediately along the whole length of that conductor in much the same way that a number of railway wagons respond, practically instantaneously, to a small movement of just one of those wagons.Electric current is so slow that, in practical terms, it's unlikely that an individual electron will complete its journey through the filament of a flashlight within the lifetime of its battery!
How does current flow in a conductor?
Current flows in a conductor when there is a potential difference applied across it, creating an electric field that causes the movement of free electrons in the conductor. The electrons flow from the negative terminal to the positive terminal of the voltage source.
Does electricity travel closer to the speed of sound or light?
Electrons, that make up an Electric Current move at the Speed of Light.Further CommentAlthough electrons move rapidly, their movement is quite chaotic. But the actual drift of electrons along a conductor -i.e. current- is V-E-R-Y slow. So slow, in fact, that an individual electron, flowing through a flashlight bulb's filament, is unlikely to travel the length of that filament during the lifetime of its battery,
When an electric current flows through a long conductor how does each free electron moves?
The individual electrons will move back and forth, as they do when there is no current. You would have to do very careful statistics to notice that there are slightly more electrons moving in one direction than in the other: the drift velocity (average velocity due to current) of the electrons is typically a fraction of a millimeter per second.
Why does conductor heat up when current is passed through after a long time?
Heating up means increase in average speed of atoms oscillation. When current passes through the conductor electrons collide (impact) with atoms and transfer a part of their energy to them increasing their average speed. Error: "average" instead of "average"
