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Q: Why is it better to determine the efficiency of the transformer indirectly rather than by loading it?
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What is the significant relationship of the no load loss in excitation current test in transformer?

The no load losses are the losses caused by energizing the transformer. These are constant losses, regardless of loading. This in effect tells you the efficiency of the transformer. (Power in) - (no load losses) = (Power out)


How do you calculate the percentage loading of transformer?

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How do you change a 240 circuit to 120?

A step down transformer can do it safely. However there is going to be some loss of efficiency with actual loading so a step down of 1:0.5 ratio can do it the power required is to be implemented.


How did ISO containers improve shipping efficiency?

They required less loading and unloading.


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Is this statement true or false the maximuim efficiency of transformer is occured when iron losses is equal to full load copper losses?

Copper losses are directly related to loading of the transformer. Iron (core) losses are a result of magnetizing of the core of the transformer, and are relatively constant from no load to full load. With this in mind, it should be clear that the above statement is false. Maximum efficiency results with low core losses, and low copper losses. Copper losses cannot be helped, so it is important to minimize core losses to increase the efficiency of a transformer.AnswerYes, it is perfectly correct -well, with the proviso that transformers normally operate somewhat below full load and, so, are designed to achieve maximum efficiency somewhat below full load. A transformer's maximum efficiency does indeed occur when the copper losses and iron losses are equal. Unfortunately, the mathematical proof of this is too complicated to reproduce here, I suggest that you check out any reputable electrical engineering textbook.


Difference between entrapment efficiency and drug loading efficiency of microspheres?

1. Entrapment efficiency is the ratio of wt. of drug entrapped into a carrier system to the total drug added. 2. Drug loading is the ratio of drug to the weight of total carrier system (all excepients taken together).


What is copper loses in transformer?

Losses due to loading. As more load (more current) is put on a transformer, these losses will increase. They are often referred to as I2R (or I^2*R) losses.


How much high efficiency liquid detergent is needed in a top loading washer?

It will tell you on the back of the bottle.


What are the advantages of Swinburne's test?

1. swinburne's test is economical since power required to test a large machine is very small (i.e.,)no load input power. 2.The efficiency of the machine can be predicted at any load, since constant losses are known. 3.This method enables us to determine the losses and efficiency without actually loading the machine


What is miles per gallon on a boat?

Boats efficiency is measured in gallons per hour. Variances in weather/water conditions and loading of the vessel holding lower in the water change the efficiency.


Why are iron losses considered as constant losses in transformer?

Iron losses are due to energization of the transformer; they do not depend on the loading of the transformer. They will vary depending on the voltage applied to the transformer. The best model of this is a parallel connection to the ideal transformer winding.