Answer / rajeev

Because inverter oprates on dc

Answer / poonga

T/F losses depend on core and copper not on power factor .this is reason why it is being mentioned in KVA

Answer / prapulla

Transformer works under ac supply.so it depends on power factor also.where in case of machines working under dc supply, there is no pf.

How much CTs are required to measure th curent in DOL starting of motor?PLs explain.

1 Answers  

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why transformer rating in kva

6 Answers  

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in three phase with neutral connection, what will happen,if the neutral is in open condition with single phase distribution panel

4 Answers  

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I have doubt that the supply HZ (very low or high than rated ) may affect the power factor. is it true. ?

0 Answers  

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hi, could someone help me to find a control design for syncronising panel .

0 Answers  

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For a DY11 lighting Transformer on primary side whee to connect fourth lead? from nuetral or from ground?

3 Answers   Sabic,

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WHAT IS LIGHTNING,HOW TO CALCULATE LIGHTNING DESIGN CALCULATION?

2 Answers   L&T,

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current transformer balance the power level on both sides. e.g in case of step up, at secondary side voltage rise but current decrease and vice versa in case of step down transformer. but how this power level remains same in case of current transformer and voltage transformer

0 Answers  

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what is the difference b/w absolute encoder and incremental encoder?

0 Answers  

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why restricted earth fault protection can not operate for phase faults??as there will be a current in secondary of ct,when a phase fault occurs!

1 Answers   GMR,

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corona happens more in ac or dc?

5 Answers   MAHINDRA,

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What is value of earth resistance required for substation and equipment earthing and what are the reference guidelines

0 Answers   Glenmark,

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