earth also having a gravitational force (magnetic field of north and south)but it attracts any object compare to this theartifical magnetic cant perform same as earth why?

0 Answers  

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What is the difference between Isolator annd Circuit Breaker.

21 Answers   ABB, Lanco, NTPC, Power Grid, RInfra,

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UPS battery Back time = no.of Batteries * Ah of the Battery / output KVA * 130 ? what is the 130 means ? can any one help? because all are using this formula how its came 130?

2 Answers  

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i am using auto transformer for starting of induction motor to provide reduse voltages...but the principle of a tansformer according to definition"which transform energy to on circuit to another circuit with constant power and constant frequency". so if i am using reduse voltage then current obsely hige because power is same.but we use auto transfarmer for starting of induction motor to give low current.but here according to definition we are giving hige current.

0 Answers  

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What are the types of TESTS in CIRCUIT BREAKERS based on Testing and commissioning?

2 Answers  

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Why air circuit breaker off due to power failure?

0 Answers  

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if we convert kw into kva,which one formula use by us,pls tell me?

19 Answers   ABB, AEC, BGH,

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how much leakage current is allowed in MC61A L&T make relay?

0 Answers   Siemens,

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why the the phase transformer's nuetral has been grounded

2 Answers  

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Why PT burnts?

2 Answers  

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In 1000KVA Transformer why does we connect HT with delta connection and LT with star connection.Illustrate by showing formula?

4 Answers   Tata Motors,

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how choose conductor&depending upon load

0 Answers   Ford, HCL,

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