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The voltage transformation ratio of a transformer is equal to the ratio of?

1 Answer

The voltage transformation ratio of a transformer is equal to the ratio of secondary induced e.m.f. to primary induced e.m.f.

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Answer : 1) Voltage ratio: The voltages in primary and secondary winding is proportional to number of turns in primary and secondary respectively. So, the voltage ratio is same as transformation ratio. V2/V1 = N2 ... as transformation ratio of transformer. It is denoted by K. K = N2/N1

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Answer : Auto-transformer makes effective saving on copper and copper losses, when its transformation ratio is approximately equal to 1.

Description : Use of auto-transformer is economical when the transformation ratio is?

Answer : Use of auto-transformer is economical when the transformation ratio is near unity.

Description : What is transformation ratio?

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Answer : Step-down transformer converts high voltage and low current into: Low voltage and high current

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Answer : The kVA rating of Three-phase transformer with Voltage = 200V and Current = 100A will be : 34.64 kVA

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