What is the maximum efficiency?
The maximum efficiency is the ratio of the temperature difference between the reservoirs and the temperature of the hot reservoir, expressed in the equation , where TC and TH are the absolute temperatures of the cold and hot reservoirs, respectively, and the efficiency.
What is condition for maximum efficiency?
Maximum Efficiency Condition of a Transformer In equation (1), the numerator is constant and the transformer efficiency will be maximum if the denominator with respect to the variable I2 is equated to zero. Thus, the transformer will give the maximum efficiency when their copper loss is equal to the iron loss.
Which transformer has high efficiency?
Transformers are in general highly efficient, and large power transformers (around 100 MVA and larger) may attain an efficiency as high as 99.75%. Small transformers such as a plug-in used to power small consumer electronics may be less than 85% efficient.
Why the efficiency of distribution transformer is 60 to 70 and not 100 %?
Distribution transformer is designed for maximum efficiency at 60% to 70% load as it normally doesn’t operate at full load all the time. Its load depends on distribution demand. Whereas power transformer is designed for maximum efficiency at 100% load as it always runs at 100% load being near to generating station.
How can transformer losses be reduced?
Due to the constantly changing magnetic fields, there is a loss of current in the core. One easy solution for how to reduce eddy current losses in the transformer is to make the core by stacking thin sheets together. This will decrease the eddy current and hence the losses made by it too.
What is the efficiency of distribution transformer?
60% to 70%
Why do we use power transformers?
Power transformers are used in the high voltage transmission network to step up and step down the voltage. These transformers are generally used for the purpose of transmission of heavy loads. Naturally, power transformers have the corresponding copper losses and iron losses at higher load.
What is commercial efficiency?
Commercial Efficiency, as referred to the efficacy of commercial buildings,is largely affected by the building itself and the factor of human behavior. Effective Development invests in those interventions that will elevate the efficiency of commercial buildings to a higher level. …
At what power factor the voltage regulation of transformer is zero?
1 pf