Answer / visal

..property by which certain amount of excitation remains back in the substance even after the removal of magnets..
due to the hysteresis property of magnetism

how much distance is required for earth pit to earth pit in substation???

3 Answers   Divis Laboratories,

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please send 5yearje solved papers on my email himmatsinghnathawat@gmail.com

0 Answers  

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Any one can explain if there is any harm from humming noise heard from air circuit breaker : we have 415 switch board having two incomers from transformers 3.3KV/415V , when bus coupler closed, and open one ACB incomer to work in one of the transformers, the current started hunting around 50 Amps, and heard humming noise from the air circuit breaker, although the load current was only 1200 amps while the ACB capacity is 2500 Amps, and the transformer 1600 KVA. The same didn't happen when taken the other transformer offline. Why this humming noise and current fluctuation? is there any implication or danger, bearing in mind that we just returned everything back to normal and stopped the maintenance of the transformer. Shall we go ahead and ignore this noise?

6 Answers  

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is the value of inductance depends upon the evalue of thitha in doubly excited machine?

0 Answers  

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what is vA rating and class of a ct.

0 Answers   L&T,

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which pump used in STP

0 Answers   Dalkia,

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why after termination of HT cable armoured earth connected one end, why not connect other end.pls tell me correct answer.

3 Answers  

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In 3pin or 5pin socket why the earth pin is bigger

3 Answers  

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whats is the role of power factor in designing a tariff structure?

1 Answers   IIT,

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if we know Fault level say 25 KA , How to decide busbar size for Distribution network of 1000 Amp Breaker ? Sample Calculation or Farmula Available or not ?

4 Answers   TCS,

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Give details on how you intend to handle a challenging position you are posted to manage unexpectedly as a company staff?

0 Answers  

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The objective of connecting a resistance and capacitance across gate circuit is to protect the SCR against

2 Answers  

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