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Why don't the transformers rotate as InductionMotors when they are given AC supply?
The transformer components don't rotate (or move at all) simply because they are rigidly mounted. If you suspend a thin wire in the air close to an iron object, and pass a current through the wire, it will move, being attracted toward the iron by the magnetic field produced by the current. Motors are specially arranged with the magnetic field in just the right spot so that it acts on the armature to cause rotation. Of course the armature rides on bearings so it can rotate. Transformers have no components that are free to move, and the magnetic field is directed so as to induce a voltage in the secondary winding. That's what transformers do. Nothing inside the transformer is free to rotate. Interestingly, if you ever get a chance to stand near a large transformer, you will hear a buzz or humming sound. This is the wires and iron core actually moving a very tiny amount as the magnetic field acts on them. There is no rotation though, just a small vibration back and forth as the magnetic field builds and collapses.
What else can I help you with?
Differentiate step-up transformers from step-down transformers?
Step up transformers increase the voltage, while step down transformers reduce it. Higher voltages are better for electricity transmission/distribution, because, for any given load, the higher the voltage, the lower the resulting current. This means the supply conductors can have a lower cross-sectional area and the resulting saving in copper makes the installation cheaper. A lower load current also means lower line (energy) losses.
What happens when dc is given to ac motor?
motor will not rotate
What is the name given to the large transformers used in transmission systems to step up and step down?
step up transformer
What will happen if you pass ac current passes through a inductor?
magnetic flux will be induced its use to rotate the shaft or given some force
What happens if an ac supply is given to dc generator?
AC supplies are not given to DC gennies. A DC gen requires a mechanical prime mover.
Why alternating current is use for electrical system?
The transmission of electrical energy requires very high voltages (for a given load, the higher the supply voltage, the lower the load current). To increase/reduce these voltages, you need transformers. Transformers are AC machines; they do not work with DC.
Differentiate step-up transformers from step-down transformers?
Step up transformers increase the voltage, while step down transformers reduce it. Higher voltages are better for electricity transmission/distribution, because, for any given load, the higher the voltage, the lower the resulting current. This means the supply conductors can have a lower cross-sectional area and the resulting saving in copper makes the installation cheaper. A lower load current also means lower line (energy) losses.
What is a money supply?
The total supply of money in circulation in a given country's economy at a given time.
What happens when dc is given to ac motor?
motor will not rotate
What kind of supply is given to the circuit?
ac supply is given and then in the circuit rectifier converts ac to dc
What is the need of high frequency transformers?
High-frequency transformers could be transformers operating at frequencies higher than 50 or 60 Hz. An example is the transformers used in transport aircraft power supplies which operate at 400 Hz. This allows a transformer with a given power rating to made made with one eighth the mass of an equivalent transformer for a 50 Hz supply. Another type of high-frequency transformer is the tuned transformers used in radio systems. A tuned transformer passes signals over only a limited band of frequencies so is useful in radio receivers to tune out unwanted signals on different frequencies from the one that is needed.
What will happen when DC supply is given to a bulb?
When a 230 V dc supply is given to a bulb it will glow, because it has just a coil inside.
Why do you get circle shape if you rotate any shapes?
A circle is the set of all the points that have the same distance from a given point (its center). If you rotate a shape, you rotate it in such a way that you keep any point a fixed distance from the center of rotation.
What is an amount producers are willing and able to sell at a given price?
Supply schedule or a supply.
What is the name given to the large transformers used in transmission systems to step up and step down?
step up transformer
What happens if a dc supply is given to a transformer under no load?
when dc supply is given to transformer at primary winding , the output at secondary winding will be zero.Because to induce voltage ,countnie changing flux is required ,that can not be obtained from dc supply...........
Does the supply of a product refer to the number of similar products that will be bought at a given time and at a given price?
No. The supply is the number of similar products that are AVAILABLE at a given time and a given price. If the demand for the product at that price is less than the supply, not all the product will be bought (you will have some surplus product). In that case, "the number of similar products that will be bought at a given time and at a given price" represents the DEMAND (not the supply). It's called the law of supply and demand. Here's how it works. If the ratio of demand/supply is constant, then the price should remain constant. However, if that ratio increases, then the price should go up. If that ratio decreases, then the price should go down. If price goes down without changing the supply, then that will likely increase demand, changing the ratio of demand/supply, and resulting in the price increasing. If price goes up without changing supply, then that will likely result in reducing demand, resulting in changing the ratio of demand/supply, resulting in the price going down.
