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Wherever you need to step up (increase) an a.c. voltage. For example, the voltage generated by an alternator in a power station is far too low for transmission, so the alternator's voltage (of up to about 25 kV) would be stepped up to the 400 kV or so necessary for transmission.

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12y ago

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When would you use a step-up transformer in the HVAC industry?

They are mostly used to step up the voltage of the power from a generator.


When would you us a step-up transformer?

When the voltage need to be step up.


Does a basic transfomer in its normal operation use step up voltage step down voltage step up current or all?

A transformer has a primary and a secondary side. There is a ratio of windings from one side to the other that dictates whether it is a step up or step down transformer. The transformer is usually marked as to the input and output specifications. The current is directly proportional to voltage. If you had a transformer that was a step up from primary to secondary, it would be step down from secondary to primary.


What happen if the secondary side of step down transformer supply a bigger voltage?

it would be called a step up transformer


What happens to the transformer ratings when you use a three phase step down as a step up transformer?

Nothing. The same rating is applicable.


How does transistor acts as an amplifier?

When transformer is used in step up mode then we can use transformer as amplifire


How does transistor acts an amplifier?

When transformer is used in step up mode then we can use transformer as amplifire


What will happen to frequency of current when voltage is changed using a step up or step down transformer?

Frequency does not change when you use a step-up or step-down transformer. Only current and voltage is changed.


Step up transformer is used to increase the?

A step up transformer is used to step up an AC voltage


Which conditions are used in step up transformer?

Transformers, step up or step down, use mutual induction in their operation.


What is the difference between a step-up and step-down transformer?

A step-up transformer increases voltage, while a step-down transformer decreases voltage.


Can an isolating transformer have a center earth tap?

I suppose it could, but then it wouldn't be purely an isolation transformer. It would then be a isolation and either step up or step down transformer.