A transformer may be step up or step down. If the output voltage is greater than the input voltage, the transformer is said to be a step-up transformer. A transformer is said to be a step-down transformer if the output voltage is less than the input voltage. This classification is carried out on the basis of the ratio of input and output voltages. From application point of view, the following transformers are most important:

  • Power and distribution transformer: These transformers are used for transmission and distribution of power.
  • Autotransformer: These transformers are used to change the voltage within relatively small limits and are used for starting AC motors, and so on.
  • Transformers for feed installations with static converters: These are used for converting AC to DC and also DC to AC. The first one is used for rectification purposes and the second one for inversion purposes.
  • Testing transformers: These are used to conduct tests at high and ultra-high voltages.
  • Power transformers for special applications: These are used in furnaces, welding and so on.
  • Radio transformers: These are used in radio engineering and similar purposes.

From frequency range point of view, transformers can be divided as (50–400 Hz) audio transformer, wide band and narrow band transformers and pulse transformers. Transformers can also be divided depending on the number of windings such as two winding (conventional) and single winding known as autotransformer.

admin

Share
Published by
admin

Recent Posts

Standby Generators and Custom Commercial Generators for Sale

Humankind has become extremely dependent on electricity, without it we can’t run the household, keep…

4 years ago

Electrical Machine Interview Question And Answer

[1] Define the term synchronous speed [Dec-2003] For synchronous machines there exists a fixed relationship…

7 years ago

Transformer Interview Questions With Answer

We shared a lot of interview questions on electrical machines, power system and power electronics. Today we…

7 years ago

What Is Diesel Power Station

DIESEL POWER STATION A generating station in which diesel engine is used as the prime…

7 years ago

Synchronous Generator Interview Questions

Q:Why syn. generators are used for the production of electricity? A:synchronous machines have capability to…

7 years ago

Hydro Power Station

Hydro-electric Power Station A generating station which utilises the potential energy of water at a…

7 years ago