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A transformer is used to step up (increase) or step down (decrease) an alternating voltage with very little loss of energy.

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11y ago
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11y ago

At the power station end, it steps the generated voltage up to a very high level for transmission. At load centres, it steps down the transmitted voltage for distribution.

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Q: What does a transformer do to a voltage in a power line?
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Related questions

What is the main different between the power transformer and voltage transformer?

Voltage Tarnsformer transforms only voltage. While power transformer transforms both voltage and current.


What do you call A device that increases or decreases voltage in a power line is a?

A transformer can perform this function.


When step down transformer is activated what happens?

Step down transformer reduces high voltage of main power line and distribute it to desired level of voltage usable by residence or devices.


What is the purpose of a transformerin a power grid system?

A transformer changes the electricity from one voltage to another, which allows a high voltage power line to be converted down to a voltage suitable for home usage.


Is line voltage or phase voltage mentioned on transformer nameplate?

It depends how they are connected. If they are connected between line conductors then they are measuring line voltages. If they are connected across phases then they are measuring phase voltages.


What Is necessary to convert higher voltage power to low voltage power?

A transformer


What is a device that increase or decreases voltage in a power line?

A transformer. A small example is the coil in a motorcar. A transformer, in a power line, only changes voltage in one direction under normal usage. At distribution voltages, about 8360 VAC, the voltage is monitored by a regulator. A regulator either increases or decreases the voltage automatically to insure the desired voltage is steady. This regulated voltage is then fed to Transformers to provide customers with a regulated voltage at the desired voltage.


What does inductive load effect on High Voltage transmission line?

the inductive load which is generally use in high voltage transmission line known as transformer. the transformer transform the high voltage to low voltage.


What is used to increase or decrease the voltage across a power line?

The device that increases or decreases the voltage impressed across a power line is known as a voltage regulator. A voltage regulator is a type of transformer where the primary and secondary turns ratio are fairly close; one (primary or secondary) often has a tap changing ability to add or remove several windings, allowing more dynamic control of voltage.


How do you tell if you have delta or wye power?

In Europe, low-voltage three-phase distribution is by means of a four-wire system (three line conductors and a neutral) supplied from a wye-connected transformer secondary. In North America, low-voltage is supplied from a delta-connected transformer secondary, one phase of which is centre-tapped and earthed (grounded). The single-phase supply to residences is then supplied by that particular phase, giving 240 V line-to-line and 120 V line-to-neutral. You can tell if you have a delta power when the phase voltage is equal to the line voltage and that you have a star power when the phase voltage =root 3(THE LINE VOLTAGE).


What is the power line voltage between phase and earthing?

It is the same as phase to neutral. As the neutral is earthed at the electricity suppliers transformer.


What do you mean by line in and line out in power system?

A1: Usually this is in reference to a transformer that either steps up or steps down the Line Voltage. For example if your house line voltage was 120 VAC and this voltage was attached to the input (Primary) or a transformer, the output side of the transformer might step up the voltage to 240 VAC. This would be called line out voltage on the secondary of the transformer. A2: In case the question was related to audio signalling and amplification, Line In and Line Out are low level inputs and outputs of audio signals, often using RCA phono jacks, such as what is connected between a tape deck or CD player and your mixer or amplifier with coaxial cables.