Answer / dheeraj.yadav

Rccb connected in circuit for protection against earth fault.whether neutral connected or not.if any phase is earthed then Rccb triped.

Size of the power cable like 1.5,2.5,4 sq.mm which area calculated from whick area or how specified the size?

1 Answers   MRF,

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pls tell about gas insulated substation?which gas is used for that substation?above which rating we are used this substation?how we take maintenance in that substation?it means substation fully shutdown or live condition?if live condition means how?pls clear this things

1 Answers   Essar,

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I want to ask a question which i faced during testing of Capacitive Voltage Transformer in AIS. We have measured the C1 , C2 individually , but when we start to measure the total C1+C2 , the testing equipment shuts down and says low loading. Kindly is it possible to find the total capacitance by using measuring device. kindly briefly explain the procedure.

0 Answers   AIS,

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why servomotor motor? where i apply for best output?

0 Answers  

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why the energy meter disc rotates anticlockwise while reading

1 Answers   KSEB,

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what is the principal of star delta starter?

9 Answers  

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Pls explain about full theory of salient pole generator?

1 Answers   Kirloskar,

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1.what is the funtion of chiller primary & scondary pumps. 2.what is the use of distribution lines & Types. 3.what is the use the thermal power stations & how much capacity.

0 Answers   Wipro,

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Explain why the Voltage drop will happen in 3 Phase line?

3 Answers  

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what is first ground fault & second ground fault. This is used in rotor protection of alternator.

1 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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What is Grounding? any difference b\w earthing? if yes plz explan??

3 Answers   ABB,

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