what is the difference b/w winding insulation class and winding temperature class?

6 Answers   Bhel, NDPL, NTPC,

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IN 1000kva transformer where the oil and winding temperature sensors is connected

0 Answers   Cushman Wakefield,

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Difference between field rheostat and armature rheostat.

0 Answers  

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Why the efficiency of generator is more than motor in swinburne's test

0 Answers  

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when we connect a CT in the line will there be any loses in the line due to the mutual inductance of the CT.

1 Answers  

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What is the difference between split AC and Casste AC?

2 Answers   NTPC,

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What is resistance reading of earth copper rod with grid and without grid?

0 Answers  

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WHAT ARE THE DATAS REQUIRED FOR SCS SIGNAL LIST PREPARATION?

1 Answers   L&T,

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how to find 5 kilo meter long under ground 33 kv cable fault location if IR VALUE shows 0.05 M ohm @5000 volt.and cable fault locator shows some time fault distance 3 kilo meter ,3.7 kilo meter and some time 1 kilo meter? now how to find the fault location that where is leakage.

1 Answers   FGI, OPS,

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I have carried out wiring for lighting in a shed in Industrial area which contains Metal halide lamps & have balanced in 3ph.Now when we put all the lines on in the daytime the current taken at 3phases at MCB comes to be equal i.e.28,29,28Amps respectively but in the night time i.e between 7p.m.to 11p.m. at the same MCb the current is 52,59,62Amp, though I have fit 63A MCB it is tripping in the above period.What may be the reason.? Note: This industry is located in industrial area where majority of steel ingot manufacturing plants are there. Whether this may be due to harmonic? what should I do to overcome above problem.pl suggest urgently.

4 Answers  

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what is the working difference b/w softstarter and Variable frequency drive ?

6 Answers   Parle,

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Don't you have similar question banks related to Oral Certification Examination conducted by Mercantile Marine Departments / Directorate of Shipping, Ministry of Shipping for Electro Technical Officer?

0 Answers   Bernhard Schulte Shipmanagement,

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