what is voltage rise and voltage drop?

8 Answers   HP, jetking, TCS,

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In aerodynamic turbines which element is NOT there a.stator b.compressor c. Fuel intake system d.fans

0 Answers  

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In India the supply voltage is 230 volt A.C. During the negative half cycle phase becomes neutral and neutral become phase? or what will happen during negative half cycle? how the electrons flow during positive and negative half cycle?

0 Answers   ITI,

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what is F.A.P in fire alarming system?

3 Answers  

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if we give 60 hz single phase supply to the transformer used in europe , than what will happen

0 Answers   Core Logic,

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How we check vector group for a Dyn1 transformer?

6 Answers  

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how can we represne the analog signal and digital signal if want to measure the speed and we have to use PLC

2 Answers  

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what is the unit of current

12 Answers   RRB,

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how can we find thae value of capacitor for single phase motor. what is difference between starting capacitor and running capacitor.

0 Answers  

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Briefing the effects of ASR and ACR of a double closed-loop speed regulating system.

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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# 4 hi friends i m from electrical branch and seeking for tech. + apti. both papers of hpcl plz get it available as soon as possible my email id is sumit_lig189@yahoo.co.in

0 Answers   HPCL,

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