answersLogoWhite

0


Best Answer

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

User Avatar

Wiki User

โˆ™ 2012-11-14 06:33:03
This answer is:
๐Ÿ™
0
๐Ÿคจ
0
๐Ÿ˜ฎ
0
User Avatar
Study guides
๐Ÿ““
See all Study Guides
โœ๏ธ
Create a Study Guide

Add your answer:

Earn +20 pts
Q: What does a transformer do to current and voltage?
Write your answer...
Submit
Related questions

What is the incoming voltage from the current source to the transformer called?

the incoming voltage from the current source to the transformer is called primary voltage.....


Difference between current and voltage transformer?

In case of current transformer the voltage is constant. we can step up or step down the current rating. In case of Voltage Transformer the Current is constant. We can step up or step down the voltage ratings.


Can a constant dc current can induce a steady state voltage in a transformer?

No, the current has to change for a voltage to be induced in the transformer.


What is current voltage transformer?

A current transformer is a transformer that takes a ratio of primary current, and delivers this ratio to the secondary. The voltage across the primary will be insignificant, and the voltage across the secondary is dependent upon the resistive burden put across it (since the current is a constant ratio of the primary current). A voltage transformer is a transformer that takes a ratio of primary voltage and steps this down to a specific secondary voltage. Primary current is typically very small and secondary voltage is typically very small. A power transformer is a voltage transformer that is designed for "large" primary and secondary currents.


Why does the current in a transformer fall when voltage increases?

In common with most electrical circuits, when the voltage supply to a transformer is increased, the current through the windings also increases. However, when the current drawn from the transformer increases (with the supply voltage unchanged), the voltage output from the transformer will be reduced.


What is the purpose of constant voltage transformer?

The term 'constant voltage transformer' is used to differentiate the operation of transformers that are intended to change voltage levels, from those intended to change current levels -a current transformer (CT), for example, is termed a 'constant current transformer'.


The incoming voltage from the current source to the transformer is called?

The incoming voltage from the source to the transformer is called primary voltage.


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.


The incoming voltage from the current source to the transformer is called what?

The input voltage to a transformer is called "primary".


What is the difference between a current transformer and a voltage transformer?

A current transformer step downs the current in a power circuit to a lower amperage. A voltage transformer steps down the voltage in a power circuit, typically to 110 volts AC for residential and business use.


What are the output voltage and current of a transformer determined by?

The secondary (output) voltage is determined by the primary voltage and the turns ratio of the transformer. The secondary current is determined by the secondary voltage and the load resistance.


What type of voltage comes out from a transformer?

You get alternating current, AC, from a transformer.


When your looking for voltage and current in a step up transformer what do you do?

A 'step-up' transformer's secondary voltage is higher than the primary voltage. This 'voltage ratio' is (for an 'ideal' transformer) the same as its 'turns ratio'. The secondary current is determined by the load, which then determines the primary current -the current ratio being equal to the inverse of the turns ratio.


Can you use transformer with your 110 aircon?

A transformer can be used to change the voltage to an appliance. The voltage rating of the transformer should be right for the voltages used, and the current rating of the transformer should not be less than the current drawn by the equipment.


What is the name of the incoming voltage from the current source to a transformer?

The primary voltage.


How do you determine whether a transformer is a step up or step down?

A step up transformer increases the voltage and decreases the current, however a step down transformer will decrease the voltage and increase the current


How current transfomer is step up voltage transformer n step down current transformer?

Current transformers are not voltage transformers. Current transformer are used for metering or protection purposes, with single turn primary. Generally the secondary current is either 1Amps or 5Amps.


A transformer can increase or deacrease what?

Voltage and current.


What is the word for an electrical tool that increases or deacreases the voltage in an electric current?

It is called a transformer. No, not the robot type. A transformer increases or deacreases the voltage in an electric current.


Does a step-up transformer step up the voltage or the current or the power?

A step-up transformer steps up voltage.


Why transformer rating is not given in kw?

Transformer rating is based on the maximum temperature a transformer can run at. This temperature is dictated by the amount of current flowing through the transformer windings. This is why transformers are rated in KVA (voltage * current), not kW - it doesn't matter what the phase relationship is between voltage and current, just the magnitude of the current.


How can calculate fulload current of transformer?

Take the VA of the transformer and divide it by the output voltage.


Which transformer raises the voltage high and lower the current for transmission?

A step-up transformer.


What is a breakdown current of a 50kva transformer?

I depends on the voltage.


What can be used to change the voltage of an alternating current?

A transformer