All day efficiency of transformer
- 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
Maximum efficiency of transformer formula
Efficiency of transformer at full load formula!
Efficiency of Transformer
Transformer Efficiency
The ratio of the output power to the input power in a transformer is known as efficiency of 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