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.
They are mostly used to step up the voltage of the power from a generator.
When the voltage need to be step up.
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.
it would be called a step up transformer
Nothing. The same rating is applicable.
When transformer is used in step up mode then we can use transformer as amplifire
When transformer is used in step up mode then we can use transformer as amplifire
Frequency does not change when you use a step-up or step-down transformer. Only current and voltage is changed.
A step up transformer is used to step up an AC voltage
Transformers, step up or step down, use mutual induction in their operation.
A step-up transformer increases voltage, while a step-down transformer decreases voltage.
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.