Maximum efficiency of transformer formula
- when transformer efficiency is maximum
- what is the condition for obtaining maximum efficiency from transformer
- why is the efficiency of transformer so high
- when efficiency of transformer will be maximum
Efficiency of transformer derivation.
Efficiency of Transformer
Transformer Efficiency
The ratio of the output power to the input power in a transformer is known as efficiency of transformer.
Derive the condition for maximum efficiency of a single phase transformer
The transformer efficiency is represented by Greek letter Eta ($\eta $).
$$\mathrm{\mathrm{Efficiency,}\eta \:=\:\frac{Output\:Power}{Input\:Power}}$$
From this definition, it appears that we can determined the efficiency of a transformer by directly loading the transformer and measuring the input power and output power.
Although, this method of efficiency determination has the following disadvantages −
In practice, the efficiency of a transformer is very high, and a very small error (let say 1%) in input and output wattmeters may give ridiculous results.
Consequently, this method may give efficiency more than 100%.
In this method, the transformer is loaded, hence a considerable amount of power is wasted. Therefore, this method becomes uneconomical for large transformers.
It is very difficult to find a load which is capable of absorbing all of the output power.
This method does not provide any informatio
- transformer efficiency