What is the application of Nitrogen Injection system in Transformer Protection?

1 Answers   HPL,

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DEAR ALL I have motors ( 10 units )each one is 90kw 380V 50 HZ 1000rpm but new local pwer is 220v 60 hz requierd rpm should be 1000 pleas what the beast solution is used frequncy converter or rewinding all motos or chang all motors thanks

6 Answers   GE,

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What is battery Amphere-hour? How the battery back up time period is calculated?

2 Answers  

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what is a lightning arrester???

12 Answers   ABB, NTPC,

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what is L.T?specify the range?

7 Answers  

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What do you mean by distributed winding in alternators? how exactly is 3 phase power generated?

2 Answers  

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What happens when the polarity changes in CT? Explain briefly?

8 Answers  

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In case of salient pole alternator when number of poles are 4 or more than 4 it helps the flux wave to be sinusoid as air gap length is increased from center to tip , but if the number of poles are 2 how does the flux wave is sinusoidal?

0 Answers  

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why DOL starter is use in induction motor as it is not reduce the starting torque

2 Answers   Maruti Suzuki,

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how many BUSBAR is in electrical system?

3 Answers  

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what is B , c & d curves in MCB characteristics i e Full Form of B , C & D . sir please give me answer

1 Answers   NCC,

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Auto transformer starter gives the same effect as star/delta strater if its turn ratio = A 0.5 B 0.67 C o.66 D 0.577

1 Answers  

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