Answer / sayanta ganguly

Out of all machines Power Transformer have highest
efficiency. Power Transformer is a Static Machine and its
efficiency is nearly 100% that means full efficiency. power
transformer generally operated at full load. Hence,
it is designed such that copper losses are minimal and
efficiency at maximum.

Answer / vimal baldaniya

ofcourse transformer but dry type transformer because it
has less losses compared to other type transformer.

whether starting current is limited to rated current of motor through soft starting or it exceeds the rated current?

0 Answers   DAE,

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We know that, in case if there is a faulty insulation,or sc, the current is bypassed to earth through the earth wire that has low resistance.Actually, what will happen to that current that flows through gnd?In that case,if we come in contact with that faulty appliance, wont that current flow through us as we form a closed path by standing in gnd?Is grounding a safety measure?

3 Answers  

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1 Answers   MPSEB,

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20 Answers   L&T,

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1 Answers  

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0 Answers  

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why aggregate is placed all around substation ground.

1 Answers  

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what are the parameters plays a major role in Potential transformer Burden calculation??

0 Answers   ABB,

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what is resistor

9 Answers  

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what will be the effect on the voltage .if power frequency is increasing or decreasing.

2 Answers  

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why shoud in High tension cable( above11KV etc.,)a semiconducting material coating will be there on insulation?

1 Answers  

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How to assume answer to electrical questions

0 Answers  

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