Investigating a factor affecting the voltage output of a transformer essay

In most transformers, the wires are wound around an iron-containing structure called the core.

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Electrical Options- Ensure a high level of applied, scientific and instructional work in the transformer field through collaboration. The ratio of the number of turns in the primary coil to the number of turns in the secondary coil—the turns ratio—determines the ratio of the voltages in the two coils. It mainly consists of eddy current and hysteresis losses. Or the maximum voltage obtained from an oscillating voltage wave. Transformers allow Generated Voltage to be either Increased or Decreased before it is used Purpose of Transformers Describe the purpose of transformers in electrical circuits A transformer is a device which can increase or decrease AC voltages AC source is fed into primary coil, setting up an oscillating magnetic field. Grounded- Connected to the earth or some other conductor. For direct current secondary voltage output, consult manufacturer for type of rectification. Hence, we have a source of inefficiency in the transformer that is difficult to eliminate.

When it reaches the substation the voltage is lowered. Often used on the primary winding to allow the transformer to be used in different countries having different line voltages available.

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How electrical transformers do so is by altering voltage, generally from high to low. Use a core that is circular, so no energy is lost in the ends of the core by uncut field lines. Flux- The lines of forces of a magnetic field.

Core- The ferrous center part of a transformer or inductor used to increase the strength of the magnetic field. I predict that the larger the core the more efficient the output because of a larger amount of iron atoms, therefore more magnetic fields therefore more field lines, therefore more field lines cut.

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They range from huge, multi-ton units like those at power plants, to intermediate, such as the type used on electric poles, and others can be quite small.

Instrument Transformer- A transformer designed to transform the conditions of current or voltage and phase position in the primary with a specified accuracy of the secondary circuit. The stator consists of three pairs of coils that have iron cores.

Or the maximum voltage obtained from an oscillating voltage wave.

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This was because each voltage corresponds to current and if there is resistance then more current is drawn. Peak voltage- Highest voltage measured during an event. In an electric circuit, there is magnetism around it. Not only do the windings have to be well insulated from the iron core, but each winding has to be sufficiently insulated from the other in order to maintain electrical isolation between windings. Shield Conductors Uninsulated cable with no current positioned higher than other transmission lines Lightning more likely to strike these cables, pass to the towers and into the ground. This means the winding conductors must be made of the proper gauge wire to avoid any heating problems. Chain Insulators Prevent conduction of lightning current from metal towers to power lines, hence avoids dangerous power surges. Taps or Voltage Taps- Additional connections to winding allowing different voltages to be obtained from the same winding.

The case is encased in a laminated armature with a soft iron core, laminations to limit eddy currents and an axle to provide an axis of rotation while minimising friction.

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The History of Electric Transformer Essay Example