Does a step up transformer violate the principle of conservation of energy these days most of the electrical devices we use require AC voltage why?

Step up transformers do not violate the law of conservation of energy.

What is the principle of transformer discuss its energy conservation?

Long distance power transmission There is always some power loss associated with these lines. If I is the current through the wire and R the resistance, a considerable amount of electric power I2R is dissipated as heat. Hence, the power at the receiving end will be much lesser than the actual power generated.

How does a step up transformer affect the power?

In a step up transformer the voltage is stepped up so according to the example the voltage increases to 10 while the current decreases to 5 thus making the power a total of 50. Thus the electric power remains constant. Step up transformers increases voltage and decreases current.

Does transformer not violate the principle of conservation of energy?

No, law of conservation of energy can’t be violated . As for the transformer ,the input and output power remains the same , so when the voltage is increased in a step up transformer the current supplied at the ends drops , thus maintaining input and output power constant.

What does the law of conservation of energy say about the voltage and current of the primary and secondary sides of a transformer?

Transformers must obey the law of conservation of energy. Whatever amount of energy goes into the primary coil must come out of the secondary coil. If the number of windings is the same on both sides, the voltages and currents are the same.

Does transformer save electricity?

Transformers are among the most efficient electrical devices, with a typical efficiency rating above 97\%. However, consider that transformers are always operational, even when the load connected to them is small. For this reason, even a minor gain in transformer efficiency can save thousands of dollars over time.

What happens to some of the electrical energy in a transformer?

The higher the current in a cable, the greater the energy transferred to the surroundings by heating. To reduce energy transfers to the environment, the National Grid uses step-up transformers to increase the voltage from power stations to thousands of volts, which lowers the current in the transmission cables.

What is a transformer explain step up and step down transformer?

What is Step-up and Step-down Transformers. A transformer that increases the voltage from primary to secondary (more secondary winding turns than primary winding turns) is called a step-up transformer. Conversely, a transformer designed to do just the opposite is called a step-down transformer.

Can a transformer step up energy or power?

Transformer is a constant power device. It does not step up or step down power. It either steps up voltage(steps down current) or steps down voltage(steps up current) such that power remains constant at input and output of transformer. A transformer always transfer electric power from one circuit to another.

What happens at step up transformer?

When a transformer steps up voltage, current is stepped down. A step up transformer at the power station steps up the voltage and consequently steps down the current. Transmitting small current greatly reduces heat lost in the cables, which in turn reduces the number of power stations needed.

How does a step up transformer violate the law of Conservation of energy?

For a transformer the input and output power remains constant. So when the voltage increases in step up transformer, the current supplied by that end drops, thus maintaining the input and output power same. So law of conservation of energy is not violated.

Can a transformer be used as a step-up or step-down?

Theoretically, we can operate any transformer as a step-up as well as a step-down type. It only depends on the energy flowing direction. The HV windings contain a huge number of turns compared with the LV windings. An LV winding wire has a bigger cross-section than HV wire because of the higher current value on the LV side.

What is the transformer turns ratio for a step up transformer?

The transformer turns ratio (n) for a step up transformer is approximately proportional to the voltage ratio: Where V P,S are voltages, and N P,S are the turns numbers on the primary (LV) and secondary (HV) sides respectively. The primary side of a step-up transformer (LV side) has a smaller number of turns than the secondary side (HV side).

Where do LV and HV windings go in a step up transformer?

Usually, we place the LV windings close to the transformer core, and over them, we wound the HV windings. The transformer turns ratio (n) for a step up transformer is approximately proportional to the voltage ratio: Where V P,S are voltages, and N P,S are the turns numbers on the primary (LV) and secondary (HV) sides respectively.