Answer / subbu

Since ct is step up transformer ,with secondary open , very high voltage will develop on secondary side. Due to this high voltage , secondary winding insulation will fail .this will lead to damage of secondary winding.

how the earthing point or earthing is taken for ships and airplanes?

1 Answers  

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why inductancce of armature inductance of dc machines is neglected?

2 Answers   APPSC,

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What consists of 2 or more thermocouples to be connented series?

0 Answers  

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How to know motor winding is star or delta connected without see the information table and winding connection ?

5 Answers   NTPC,

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How to calculate the average power factor in 3 phase unbalanced system

5 Answers   Bhel, MacLellan,

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what is the difference between the 94 lockout relay and 86 lock out relay. I have noticed that the 94 lockout relay is activated when the distance realy is activated and 86 is activated when the 87T differential is activated. but why can't the same lockouts be used for both the protection schemes

10 Answers   ABB,

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What does Transformer vector connection Dy11y5 means?

1 Answers  

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in ct secondary one terminal is connected to earth why?

1 Answers  

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How to calculate VA rating for CT or PT or Control Transformer?

0 Answers   Veez,

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why no load voltage is greater than full load voltage?

1 Answers  

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the total iron closs in a transformer core at normal flux density was measured at 25hz and 5ohz and was found to be 250w and 800w respectively.the hysteresis loss at 50hz would be................?????

1 Answers   ABB,

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xlpe cable 4 core nuetral wire is small why ?

3 Answers  

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